TY  - JOUR
AU  - Grujić, Aleksandar
AU  - Nedeljković, Dragutin
AU  - Stajić-Trošić, Jasna
AU  - Stijepović, Mirko
AU  - Alnouri, Sabla
AU  - Perišić, Srđan
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6302
AB  - Polymer-bonded magnets are a class of composite material that combines the magnetic properties of metal particles and the molding possibility of a polymeric matrix. This class of materials has shown huge potential for various applications in industry and engineering. Traditional research in this field has so far mainly focused on mechanical, electrical or magnetic properties of the composite, or on particle size and distribution. This examination of synthesized Nd-Fe-B-epoxy composite materials includes the mutual comparison of impact toughness, fatigue, and the structural, thermal, dynamic-mechanical, and magnetic behavior of materials with different content of magnetic Nd-Fe-B particles, in a wide range from 5 to 95 wt.%. This paper tests the influence of the Nd-Fe-B content on impacting the toughness of the composite material, as this relationship has not been tested before. The results show that impact toughness decreases, while magnetic properties increase, along with increasing content of Nd-Fe-B. Based on the observed trends, selected samples have been analyzed in terms of crack growth rate behavior. Analysis of the fracture surface morphology reveals the formation of a stable and homogeneous composite material. The synthesis route, the applied methods of characterization and analysis, and the comparison of the obtained results can provide a composite material with optimum properties for a specific purpose.
PB  - Switzerland : Multidisciplinary Digital Publishing Institute (MDPI)
T2  - Polymers
T1  - Magneto-Mechanical and Thermal Properties of Nd-Fe-B-Epoxy-Bonded Composite Materials
VL  - 15
IS  - 8
SP  - 1894
DO  - 10.3390/polym15081894
ER  - 

@article{
author = "Grujić, Aleksandar and Nedeljković, Dragutin and Stajić-Trošić, Jasna and Stijepović, Mirko and Alnouri, Sabla and Perišić, Srđan",
year = "2023",
abstract = "Polymer-bonded magnets are a class of composite material that combines the magnetic properties of metal particles and the molding possibility of a polymeric matrix. This class of materials has shown huge potential for various applications in industry and engineering. Traditional research in this field has so far mainly focused on mechanical, electrical or magnetic properties of the composite, or on particle size and distribution. This examination of synthesized Nd-Fe-B-epoxy composite materials includes the mutual comparison of impact toughness, fatigue, and the structural, thermal, dynamic-mechanical, and magnetic behavior of materials with different content of magnetic Nd-Fe-B particles, in a wide range from 5 to 95 wt.%. This paper tests the influence of the Nd-Fe-B content on impacting the toughness of the composite material, as this relationship has not been tested before. The results show that impact toughness decreases, while magnetic properties increase, along with increasing content of Nd-Fe-B. Based on the observed trends, selected samples have been analyzed in terms of crack growth rate behavior. Analysis of the fracture surface morphology reveals the formation of a stable and homogeneous composite material. The synthesis route, the applied methods of characterization and analysis, and the comparison of the obtained results can provide a composite material with optimum properties for a specific purpose.",
publisher = "Switzerland : Multidisciplinary Digital Publishing Institute (MDPI)",
journal = "Polymers",
title = "Magneto-Mechanical and Thermal Properties of Nd-Fe-B-Epoxy-Bonded Composite Materials",
volume = "15",
number = "8",
pages = "1894",
doi = "10.3390/polym15081894"
}

Grujić, A., Nedeljković, D., Stajić-Trošić, J., Stijepović, M., Alnouri, S.,& Perišić, S.. (2023). Magneto-Mechanical and Thermal Properties of Nd-Fe-B-Epoxy-Bonded Composite Materials. in Polymers
Switzerland : Multidisciplinary Digital Publishing Institute (MDPI)., 15(8), 1894.
https://doi.org/10.3390/polym15081894

Grujić A, Nedeljković D, Stajić-Trošić J, Stijepović M, Alnouri S, Perišić S. Magneto-Mechanical and Thermal Properties of Nd-Fe-B-Epoxy-Bonded Composite Materials. in Polymers. 2023;15(8):1894.
doi:10.3390/polym15081894 .

Grujić, Aleksandar, Nedeljković, Dragutin, Stajić-Trošić, Jasna, Stijepović, Mirko, Alnouri, Sabla, Perišić, Srđan, "Magneto-Mechanical and Thermal Properties of Nd-Fe-B-Epoxy-Bonded Composite Materials" in Polymers, 15, no. 8 (2023):1894,
https://doi.org/10.3390/polym15081894 . .

TY  - JOUR
AU  - Stijepović, Mirko
AU  - Alnouri, Sabla
AU  - Stijepović, Vladimir
AU  - Stajić-Trošić, Jasna
AU  - Grozdanić, Nikola
AU  - Grujić, Aleksandar
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5367
AB  - This paper introduces solute-solvent interactions onto a universal transport modeling approach that has been recently introduced for predicting RO membrane performance. The mathematical modeling framework utilizes chemical potential calculations rather than concentrations, and is based on the standard solution diffusion theory. Accounting for solute-solvent interactions were all based on a Maxwell-Stefan approach for reduced motion of particles in membrane pores. Overall, the proposed model is very effective in generating all the necessary parameters, especially for estimating the water permeability, as well as the various permeabilities associated with both, monovalent and divalent types of ion in the solution. Moreover, the effects of osmotic pressure on the respective species and water flux can be estimated. The proposed RO model was found to be very efficient in predicting the performance of various types of membranes, and its performance has been validated against available membrane performance data obtained from various sources. Since the attained model predictions are in very good agreement with actual membrane performance data, the proposed model can be considered as a very effective tool for use in commercial process simulator platforms.
PB  - Elsevier
T2  - Computers and Chemical Engineering
T1  - The development of a process simulator transport model for RO systems
VL  - 161
SP  - 107783
DO  - 10.1016/j.compchemeng.2022.107783
ER  - 

@article{
author = "Stijepović, Mirko and Alnouri, Sabla and Stijepović, Vladimir and Stajić-Trošić, Jasna and Grozdanić, Nikola and Grujić, Aleksandar",
year = "2022",
abstract = "This paper introduces solute-solvent interactions onto a universal transport modeling approach that has been recently introduced for predicting RO membrane performance. The mathematical modeling framework utilizes chemical potential calculations rather than concentrations, and is based on the standard solution diffusion theory. Accounting for solute-solvent interactions were all based on a Maxwell-Stefan approach for reduced motion of particles in membrane pores. Overall, the proposed model is very effective in generating all the necessary parameters, especially for estimating the water permeability, as well as the various permeabilities associated with both, monovalent and divalent types of ion in the solution. Moreover, the effects of osmotic pressure on the respective species and water flux can be estimated. The proposed RO model was found to be very efficient in predicting the performance of various types of membranes, and its performance has been validated against available membrane performance data obtained from various sources. Since the attained model predictions are in very good agreement with actual membrane performance data, the proposed model can be considered as a very effective tool for use in commercial process simulator platforms.",
publisher = "Elsevier",
journal = "Computers and Chemical Engineering",
title = "The development of a process simulator transport model for RO systems",
volume = "161",
pages = "107783",
doi = "10.1016/j.compchemeng.2022.107783"
}

Stijepović, M., Alnouri, S., Stijepović, V., Stajić-Trošić, J., Grozdanić, N.,& Grujić, A.. (2022). The development of a process simulator transport model for RO systems. in Computers and Chemical Engineering
Elsevier., 161, 107783.
https://doi.org/10.1016/j.compchemeng.2022.107783

Stijepović M, Alnouri S, Stijepović V, Stajić-Trošić J, Grozdanić N, Grujić A. The development of a process simulator transport model for RO systems. in Computers and Chemical Engineering. 2022;161:107783.
doi:10.1016/j.compchemeng.2022.107783 .

Stijepović, Mirko, Alnouri, Sabla, Stijepović, Vladimir, Stajić-Trošić, Jasna, Grozdanić, Nikola, Grujić, Aleksandar, "The development of a process simulator transport model for RO systems" in Computers and Chemical Engineering, 161 (2022):107783,
https://doi.org/10.1016/j.compchemeng.2022.107783 . .

Grujić, A., Stajić-Trošić, J., Stijepović, M., Perišić, S.,& Radisavljević, A.. (2021). Razvoj uređaja za filtriranje boja. 
Универзитет у Београду - Институт за хемију технологију и металургију - Институ од националног значаја за Републику Србију..
https://hdl.handle.net/21.15107/rcub_cer_7843

Grujić A, Stajić-Trošić J, Stijepović M, Perišić S, Radisavljević A. Razvoj uređaja za filtriranje boja. 2021;.
https://hdl.handle.net/21.15107/rcub_cer_7843 .

Grujić, Aleksandar, Stajić-Trošić, Jasna, Stijepović, Mirko, Perišić, Srđan, Radisavljević, Anđela, "Razvoj uređaja za filtriranje boja" (2021),
https://hdl.handle.net/21.15107/rcub_cer_7843 .

Grujić, A., Stajić-Trošić, J., Stijepović, M., Perišić, S.,& Ilić Pajić, J.. (2021). Polimerni kompozitni magnetni Nd-Fe-B materijali dobijeni metodom presovanja kao nosači metalnih delova i alata. 
Универзитет у Београду - Институт за хемију технологију и металургију - Институ од националног значаја за Републику Србију..
https://hdl.handle.net/21.15107/rcub_cer_7842

Grujić A, Stajić-Trošić J, Stijepović M, Perišić S, Ilić Pajić J. Polimerni kompozitni magnetni Nd-Fe-B materijali dobijeni metodom presovanja kao nosači metalnih delova i alata. 2021;.
https://hdl.handle.net/21.15107/rcub_cer_7842 .

Grujić, Aleksandar, Stajić-Trošić, Jasna, Stijepović, Mirko, Perišić, Srđan, Ilić Pajić, Jovana, "Polimerni kompozitni magnetni Nd-Fe-B materijali dobijeni metodom presovanja kao nosači metalnih delova i alata" (2021),
https://hdl.handle.net/21.15107/rcub_cer_7842 .

Stijepović, M., Grujić, A., Stajić-Trošić, J., Perišić, S., Stijepović, V.,& Grozdanić, N.. (2021). RECDES - Softverski paket za ekonomsku procenu opravdanosti reciklaže otpadnih organskih rastvarača. 
Универзитет у Београду - Институт за хемију технологију и металургију - Институ од националног значаја за Републику Србију..
https://hdl.handle.net/21.15107/rcub_cer_7848

Stijepović M, Grujić A, Stajić-Trošić J, Perišić S, Stijepović V, Grozdanić N. RECDES - Softverski paket za ekonomsku procenu opravdanosti reciklaže otpadnih organskih rastvarača. 2021;.
https://hdl.handle.net/21.15107/rcub_cer_7848 .

Stijepović, Mirko, Grujić, Aleksandar, Stajić-Trošić, Jasna, Perišić, Srđan, Stijepović, Vladimir, Grozdanić, Nikola, "RECDES - Softverski paket za ekonomsku procenu opravdanosti reciklaže otpadnih organskih rastvarača" (2021),
https://hdl.handle.net/21.15107/rcub_cer_7848 .

TY  - JOUR
AU  - Putić, Lana
AU  - Alnouri, Sabla Y.
AU  - Stijepović, Vladimir
AU  - Stajić-Trošić, Jasna
AU  - Grujić, Aleksandar
AU  - Stijepović, Mirko Z.
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4503
AB  - This paper presents a new transport model for reverse osmosis (RO) systems, which combines irreversible thermodynamics, together with solution-diffusion theory. The simplifications adopted by the classical theory for solution-diffusion mechanisms have been found to be quite lacking when it comes to predicting the separation of multicomponent mixtures. The presented model accounts for multicomponent computations through the application of thermodynamic property models, as a means to predict the various interactions amongst the species that are present in solution. The developed transport model is relatively easy to implement, and can be utilized alongside existing equipment and thermodynamic property models. The applicability of the model presented in this paper has been tested on three different case studies, including a case that investigates single component behavior and a case that investigates multicomponent behavior The proposed model shows very good agreement with experimental results.
PB  - Elsevier
T2  - Computers and Chemical Engineering
T1  - A universal transportation model for reverse osmosis systems
VL  - 148
SP  - 107264
DO  - 10.1016/j.compchemeng.2021.107264
ER  - 

@article{
author = "Putić, Lana and Alnouri, Sabla Y. and Stijepović, Vladimir and Stajić-Trošić, Jasna and Grujić, Aleksandar and Stijepović, Mirko Z.",
year = "2021",
abstract = "This paper presents a new transport model for reverse osmosis (RO) systems, which combines irreversible thermodynamics, together with solution-diffusion theory. The simplifications adopted by the classical theory for solution-diffusion mechanisms have been found to be quite lacking when it comes to predicting the separation of multicomponent mixtures. The presented model accounts for multicomponent computations through the application of thermodynamic property models, as a means to predict the various interactions amongst the species that are present in solution. The developed transport model is relatively easy to implement, and can be utilized alongside existing equipment and thermodynamic property models. The applicability of the model presented in this paper has been tested on three different case studies, including a case that investigates single component behavior and a case that investigates multicomponent behavior The proposed model shows very good agreement with experimental results.",
publisher = "Elsevier",
journal = "Computers and Chemical Engineering",
title = "A universal transportation model for reverse osmosis systems",
volume = "148",
pages = "107264",
doi = "10.1016/j.compchemeng.2021.107264"
}

Putić, L., Alnouri, S. Y., Stijepović, V., Stajić-Trošić, J., Grujić, A.,& Stijepović, M. Z.. (2021). A universal transportation model for reverse osmosis systems. in Computers and Chemical Engineering
Elsevier., 148, 107264.
https://doi.org/10.1016/j.compchemeng.2021.107264

Putić L, Alnouri SY, Stijepović V, Stajić-Trošić J, Grujić A, Stijepović MZ. A universal transportation model for reverse osmosis systems. in Computers and Chemical Engineering. 2021;148:107264.
doi:10.1016/j.compchemeng.2021.107264 .

Putić, Lana, Alnouri, Sabla Y., Stijepović, Vladimir, Stajić-Trošić, Jasna, Grujić, Aleksandar, Stijepović, Mirko Z., "A universal transportation model for reverse osmosis systems" in Computers and Chemical Engineering, 148 (2021):107264,
https://doi.org/10.1016/j.compchemeng.2021.107264 . .

Grujić, A., Stajić-Trošić, J., Stijepović, M., Ćosović, V., Perišić, S.,& Trifunović, N.. (2020). Laboratorijski uređaj za poliranje metala, nemetala i legura. 
Универзитет у Београду - Институт за хемију технологију и металургију - Институ од националног значаја за Републику Србију..
https://hdl.handle.net/21.15107/rcub_cer_7851

Grujić A, Stajić-Trošić J, Stijepović M, Ćosović V, Perišić S, Trifunović N. Laboratorijski uređaj za poliranje metala, nemetala i legura. 2020;.
https://hdl.handle.net/21.15107/rcub_cer_7851 .

Grujić, Aleksandar, Stajić-Trošić, Jasna, Stijepović, Mirko, Ćosović, Vladan, Perišić, Srđan, Trifunović, Nemanja, "Laboratorijski uređaj za poliranje metala, nemetala i legura" (2020),
https://hdl.handle.net/21.15107/rcub_cer_7851 .

Stijepović, M., Grujić, A., Stajić-Trošić, J.,& Stijepović, V.. (2020). Unapređenje rada tehnološkog procesa dobijanja električne energije korišćenjem novog razvijenog sistema organskog Rankinovog ciklusa. 
Универзитет у Београду - Институт за хемију технологију и металургију - Институ од националног значаја за Републику Србију..
https://hdl.handle.net/21.15107/rcub_cer_7850

Stijepović M, Grujić A, Stajić-Trošić J, Stijepović V. Unapređenje rada tehnološkog procesa dobijanja električne energije korišćenjem novog razvijenog sistema organskog Rankinovog ciklusa. 2020;.
https://hdl.handle.net/21.15107/rcub_cer_7850 .

Stijepović, Mirko, Grujić, Aleksandar, Stajić-Trošić, Jasna, Stijepović, Vladimir, "Unapređenje rada tehnološkog procesa dobijanja električne energije korišćenjem novog razvijenog sistema organskog Rankinovog ciklusa" (2020),
https://hdl.handle.net/21.15107/rcub_cer_7850 .

Grujić, A., Stijepović, M., Stajić-Trošić, J., Perišić, S., Stijepović, V.,& Ilić-Pajić, J.. (2020). Uređaj za reciklažu boja. 
Универзитет у Београду - Институт за хемију технологију и металургију - Институ од националног значаја за Републику Србију..
https://hdl.handle.net/21.15107/rcub_cer_7849

Grujić A, Stijepović M, Stajić-Trošić J, Perišić S, Stijepović V, Ilić-Pajić J. Uređaj za reciklažu boja. 2020;.
https://hdl.handle.net/21.15107/rcub_cer_7849 .

Grujić, Aleksandar, Stijepović, Mirko, Stajić-Trošić, Jasna, Perišić, Srđan, Stijepović, Vladimir, Ilić-Pajić, Jovana, "Uređaj za reciklažu boja" (2020),
https://hdl.handle.net/21.15107/rcub_cer_7849 .

TY  - JOUR
AU  - Ilić-Pajić, Jovana
AU  - Ivaniš, Gorica
AU  - Radović, Ivona
AU  - Grujić, Aleksandar
AU  - Stajić-Trošić, Jasna
AU  - Stijepović, Mirko Z.
AU  - Kijevčanin, Mirjana
PY  - 2020
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3784
AB  - In order to reduce negative influence of fossil fuels on environment, use of various renewable resources is highly promoted. Terpenes, naturally occurring in plants, can be added to petroleum fuel as its substitute up to a certain share. Thermodynamic properties of a fuel under high pressure and moderate temperature conditions are of significant importance for engine efficiency. This work reports density measurements of pure p-cymene, α-pinene, limonene and citral at temperatures (293.15–413.15) K and pressures (0.1–60) MPa, applying an Anton Paar DMA HP measuring cell. Density data were fitted by modified Tammann-Tait equation where the absolute average percentage deviation between measured and calculated densities was about 0.010%. The obtained parameters were used to estimate the isothermal compressibility, the isobaric thermal expansion coefficient, the internal pressure, and the difference between specific heat capacity at constant pressure and at constant volume. For examined compounds, all thermodynamic properties, except the internal pressure, decrease with pressure rise along an isotherm and increase as temperature increases at a constant pressure. The intersection point of isotherms for the isobaric thermal expansion coefficient for pure citral was registered at pressure 47 MPa, while for other analyzed terpenes the intersection point is above 60 MPa, outside the measurements pressure range.
PB  - Elsevier
T2  - The Journal of Chemical Thermodynamics
T1  - Experimental densities and derived thermodynamic properties of pure p-cymene, α-pinene, limonene and citral under high pressure conditions
VL  - 144
SP  - 106065
DO  - 10.1016/j.jct.2020.106065
ER  - 

@article{
author = "Ilić-Pajić, Jovana and Ivaniš, Gorica and Radović, Ivona and Grujić, Aleksandar and Stajić-Trošić, Jasna and Stijepović, Mirko Z. and Kijevčanin, Mirjana",
year = "2020",
abstract = "In order to reduce negative influence of fossil fuels on environment, use of various renewable resources is highly promoted. Terpenes, naturally occurring in plants, can be added to petroleum fuel as its substitute up to a certain share. Thermodynamic properties of a fuel under high pressure and moderate temperature conditions are of significant importance for engine efficiency. This work reports density measurements of pure p-cymene, α-pinene, limonene and citral at temperatures (293.15–413.15) K and pressures (0.1–60) MPa, applying an Anton Paar DMA HP measuring cell. Density data were fitted by modified Tammann-Tait equation where the absolute average percentage deviation between measured and calculated densities was about 0.010%. The obtained parameters were used to estimate the isothermal compressibility, the isobaric thermal expansion coefficient, the internal pressure, and the difference between specific heat capacity at constant pressure and at constant volume. For examined compounds, all thermodynamic properties, except the internal pressure, decrease with pressure rise along an isotherm and increase as temperature increases at a constant pressure. The intersection point of isotherms for the isobaric thermal expansion coefficient for pure citral was registered at pressure 47 MPa, while for other analyzed terpenes the intersection point is above 60 MPa, outside the measurements pressure range.",
publisher = "Elsevier",
journal = "The Journal of Chemical Thermodynamics",
title = "Experimental densities and derived thermodynamic properties of pure p-cymene, α-pinene, limonene and citral under high pressure conditions",
volume = "144",
pages = "106065",
doi = "10.1016/j.jct.2020.106065"
}

Ilić-Pajić, J., Ivaniš, G., Radović, I., Grujić, A., Stajić-Trošić, J., Stijepović, M. Z.,& Kijevčanin, M.. (2020). Experimental densities and derived thermodynamic properties of pure p-cymene, α-pinene, limonene and citral under high pressure conditions. in The Journal of Chemical Thermodynamics
Elsevier., 144, 106065.
https://doi.org/10.1016/j.jct.2020.106065

Ilić-Pajić J, Ivaniš G, Radović I, Grujić A, Stajić-Trošić J, Stijepović MZ, Kijevčanin M. Experimental densities and derived thermodynamic properties of pure p-cymene, α-pinene, limonene and citral under high pressure conditions. in The Journal of Chemical Thermodynamics. 2020;144:106065.
doi:10.1016/j.jct.2020.106065 .

Ilić-Pajić, Jovana, Ivaniš, Gorica, Radović, Ivona, Grujić, Aleksandar, Stajić-Trošić, Jasna, Stijepović, Mirko Z., Kijevčanin, Mirjana, "Experimental densities and derived thermodynamic properties of pure p-cymene, α-pinene, limonene and citral under high pressure conditions" in The Journal of Chemical Thermodynamics, 144 (2020):106065,
https://doi.org/10.1016/j.jct.2020.106065 . .

TY  - JOUR
AU  - Ilić-Pajić, Jovana
AU  - Stijepović, Mirko Z.
AU  - Ivaniš, Gorica
AU  - Radović, Ivona
AU  - Stajić-Trošić, Jasna
AU  - Kijevčanin, Mirjana
PY  - 2018
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2334
AB  - SAFT equations of state have been widely used for the determination of different thermo-physical and phase equilibria properties. In order to use these equations as predictive models it is necessary to calculate the model parameters. In this work CK-SAFT and PC-SAFT equations of state were applied for the correlation of pure compounds densities in the wide ranges of temperature and pressure (288.15-413.15 K and 0.1-60 MPa, respectively). The calculations of densities for n-hexane, n-heptane, n-octane, toluene, dichloromethane and ethanol, under high pressure conditions, were performed with the new sets of parameters determined in this paper by CK-SAFT and PC-SAFT. Very good agreement between experimental and calculated density values was achieved, having absolute average percentage deviations lower than 0.5 %.
AB  - SAFT једначине стања се веома често користе за одређивање различитих термофизичких својстава, као и у описивању различитих равнотежа фаза. Да би се ови модели могли користити у предвиђању термодинамичких величина неопходно је претходно одредити параметре модела. У овом раду су коришћене CK-SAFT и PC-SAFT једначине
стања за одређивање густина чистих компонената у широком опсегу температура и притисака (288,15–413,15 K, односно 0,1–60 MPa). Прорачун густина n-хексана, n-хептана,
n-октана, толуена, дихлорметана и етанола је извршен на високим притисцима са сетовима параметара одређених у овом раду помоћу наведених CK-SAFT и PC-SAFT модела. 
Коришћењем добијених параметара постигнути су веома добри резултати са апсолутним средњим процентуалним грешкама мањим од 0,5 %.
PB  - Belgrade : Serbian Chemical Society
T2  - Journal of the Serbian Chemical Society
T1  - Modelling of pure components high pressures densities using CK-SAFT and PC-SAFT equations
T1  - Моделовање густина чистих компонената на високим притисцима применом ck-saft и pc-saft једначина стања
VL  - 83
IS  - 3
SP  - 331
EP  - 343
DO  - 10.2298/JSC170613096P
ER  - 

@article{
author = "Ilić-Pajić, Jovana and Stijepović, Mirko Z. and Ivaniš, Gorica and Radović, Ivona and Stajić-Trošić, Jasna and Kijevčanin, Mirjana",
year = "2018",
abstract = "SAFT equations of state have been widely used for the determination of different thermo-physical and phase equilibria properties. In order to use these equations as predictive models it is necessary to calculate the model parameters. In this work CK-SAFT and PC-SAFT equations of state were applied for the correlation of pure compounds densities in the wide ranges of temperature and pressure (288.15-413.15 K and 0.1-60 MPa, respectively). The calculations of densities for n-hexane, n-heptane, n-octane, toluene, dichloromethane and ethanol, under high pressure conditions, were performed with the new sets of parameters determined in this paper by CK-SAFT and PC-SAFT. Very good agreement between experimental and calculated density values was achieved, having absolute average percentage deviations lower than 0.5 %., SAFT једначине стања се веома често користе за одређивање различитих термофизичких својстава, као и у описивању различитих равнотежа фаза. Да би се ови модели могли користити у предвиђању термодинамичких величина неопходно је претходно одредити параметре модела. У овом раду су коришћене CK-SAFT и PC-SAFT једначине
стања за одређивање густина чистих компонената у широком опсегу температура и притисака (288,15–413,15 K, односно 0,1–60 MPa). Прорачун густина n-хексана, n-хептана,
n-октана, толуена, дихлорметана и етанола је извршен на високим притисцима са сетовима параметара одређених у овом раду помоћу наведених CK-SAFT и PC-SAFT модела. 
Коришћењем добијених параметара постигнути су веома добри резултати са апсолутним средњим процентуалним грешкама мањим од 0,5 %.",
publisher = "Belgrade : Serbian Chemical Society",
journal = "Journal of the Serbian Chemical Society",
title = "Modelling of pure components high pressures densities using CK-SAFT and PC-SAFT equations, Моделовање густина чистих компонената на високим притисцима применом ck-saft и pc-saft једначина стања",
volume = "83",
number = "3",
pages = "331-343",
doi = "10.2298/JSC170613096P"
}

Ilić-Pajić, J., Stijepović, M. Z., Ivaniš, G., Radović, I., Stajić-Trošić, J.,& Kijevčanin, M.. (2018). Modelling of pure components high pressures densities using CK-SAFT and PC-SAFT equations. in Journal of the Serbian Chemical Society
Belgrade : Serbian Chemical Society., 83(3), 331-343.
https://doi.org/10.2298/JSC170613096P

Ilić-Pajić J, Stijepović MZ, Ivaniš G, Radović I, Stajić-Trošić J, Kijevčanin M. Modelling of pure components high pressures densities using CK-SAFT and PC-SAFT equations. in Journal of the Serbian Chemical Society. 2018;83(3):331-343.
doi:10.2298/JSC170613096P .

Ilić-Pajić, Jovana, Stijepović, Mirko Z., Ivaniš, Gorica, Radović, Ivona, Stajić-Trošić, Jasna, Kijevčanin, Mirjana, "Modelling of pure components high pressures densities using CK-SAFT and PC-SAFT equations" in Journal of the Serbian Chemical Society, 83, no. 3 (2018):331-343,
https://doi.org/10.2298/JSC170613096P . .

TY  - JOUR
AU  - Grujić, Aleksandar
AU  - Ćosović, Vladan
AU  - Stajić-Trošić, Jasna
AU  - Ćosović, Aleksandar
AU  - Stijepović, Mirko
AU  - Putić, Lana
AU  - Žák, Tomáš
PY  - 2018
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4747
AB  - In this study, electrospinning combined with sol-gel technique is applied in order to produce magnetic nickel ferrite (Ni-ferrite) nanofibers. The prepared Ni-ferrite gel was mixed with poly(vinylpyrrolidone) (PVP) solution which was used as a spinning aid to enable spinnability of the mixture. Structural and morphological characteristics of the asspun ferrite gel/PVP composite web structure and calcinated Ni-ferrite nanofibers were analyzed using scanning electron microscopy (SEM). Phase composition analysis was carried out by Fourier-transform infrared (FT-IR) spectroscopy, X-Ray diffraction analysis (XRD) and Fe-57 Mossbauer spectroscopy (MS). The obtained results suggest that the pure nanocrystalline NiFe2O4 dense mat to the almost coral-like structure of fibers with diameters ranging from hundreds of nanometers to few micrometers was obtained. The results of MS analysis revealed the existence of a crystallite size distribution within the material as well as the existence of a superparamagnetic fraction with very small crystallite sizes (<13nm). Magnetic behavior of the obtained material at elevated temperatures was also scrutinized using thermomagnetic measurements (TM) up to 800 degrees C.
PB  - Belgrade : Association of Metallurgical Engineers of Serbia
T2  - Metallurgical & Materials Engineering
T1  - Synthesis of NiFe2O4 nanofibers by joint sol-gel and electrospinning technique
VL  - 24
IS  - 3
SP  - 173
EP  - 180
DO  - 10.30544/387
ER  - 

@article{
author = "Grujić, Aleksandar and Ćosović, Vladan and Stajić-Trošić, Jasna and Ćosović, Aleksandar and Stijepović, Mirko and Putić, Lana and Žák, Tomáš",
year = "2018",
abstract = "In this study, electrospinning combined with sol-gel technique is applied in order to produce magnetic nickel ferrite (Ni-ferrite) nanofibers. The prepared Ni-ferrite gel was mixed with poly(vinylpyrrolidone) (PVP) solution which was used as a spinning aid to enable spinnability of the mixture. Structural and morphological characteristics of the asspun ferrite gel/PVP composite web structure and calcinated Ni-ferrite nanofibers were analyzed using scanning electron microscopy (SEM). Phase composition analysis was carried out by Fourier-transform infrared (FT-IR) spectroscopy, X-Ray diffraction analysis (XRD) and Fe-57 Mossbauer spectroscopy (MS). The obtained results suggest that the pure nanocrystalline NiFe2O4 dense mat to the almost coral-like structure of fibers with diameters ranging from hundreds of nanometers to few micrometers was obtained. The results of MS analysis revealed the existence of a crystallite size distribution within the material as well as the existence of a superparamagnetic fraction with very small crystallite sizes (<13nm). Magnetic behavior of the obtained material at elevated temperatures was also scrutinized using thermomagnetic measurements (TM) up to 800 degrees C.",
publisher = "Belgrade : Association of Metallurgical Engineers of Serbia",
journal = "Metallurgical & Materials Engineering",
title = "Synthesis of NiFe2O4 nanofibers by joint sol-gel and electrospinning technique",
volume = "24",
number = "3",
pages = "173-180",
doi = "10.30544/387"
}

Grujić, A., Ćosović, V., Stajić-Trošić, J., Ćosović, A., Stijepović, M., Putić, L.,& Žák, T.. (2018). Synthesis of NiFe2O4 nanofibers by joint sol-gel and electrospinning technique. in Metallurgical & Materials Engineering
Belgrade : Association of Metallurgical Engineers of Serbia., 24(3), 173-180.
https://doi.org/10.30544/387

Grujić A, Ćosović V, Stajić-Trošić J, Ćosović A, Stijepović M, Putić L, Žák T. Synthesis of NiFe2O4 nanofibers by joint sol-gel and electrospinning technique. in Metallurgical & Materials Engineering. 2018;24(3):173-180.
doi:10.30544/387 .

Grujić, Aleksandar, Ćosović, Vladan, Stajić-Trošić, Jasna, Ćosović, Aleksandar, Stijepović, Mirko, Putić, Lana, Žák, Tomáš, "Synthesis of NiFe2O4 nanofibers by joint sol-gel and electrospinning technique" in Metallurgical & Materials Engineering, 24, no. 3 (2018):173-180,
https://doi.org/10.30544/387 . .

TY  - JOUR
AU  - Polovina, Saša
AU  - Vojtech, Merva
AU  - Dejanovic, Igor
AU  - Grujić, Aleksandar
AU  - Stijepović, Mirko Z.
PY  - 2018
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2302
AB  - Continuous catalytic reforming (CCR) is known to convert refinery naphtha to a high-octane liquid product, also known as the reformate. In this paper, a First Principle Reaction Section Model for a CCR process is presented. Even though CCR is a well-established technology, the application of advanced, real-time optimization techniques that are able to quickly respond to any imposed changes onto the process, are necessary in the refinery business. This becomes particularly important as a result of changes in profit margin, changes in operating cost, and the introduction of new environmental legislations. Hence, we present a kinetic model for the CCR process using the so-called "lumped" concept. The reactors have been modeled using a quasi-steady-state approach. The unknown model parameters have been estimated by bench marking the First Principle Reaction Section results with a commercial CCR process owned by the Hungarian Oil and Gas Public Limited Company (INA-MOL). The proposed model has been tested and compared to data obtained from an existing CCR plant. The predictions of the model were found to be in good agreement with the experimental data. The relative absolute errors between the measured and model estimated variables have been found to be lower than 2%. The relative absolute error associated with the required fired heater duties were less than 1.0%. Simulating the reaction section of the CCR process requires less than 0.1 s of CPU time, which clearly indicates that this model can be very suitable for performing optimization studies. Moreover, this study shows that, although there is fluctuation in the composition of feedstock, the lumped kinetic approach was capable to predict the behavior of the CCR process well.
PB  - American Chemical Society (ACS)
T2  - Energy & Fuels
T1  - Modeling a Reaction Section of a Commercial Continuous Catalytic Reformer
VL  - 32
IS  - 5
SP  - 6378
EP  - 6396
DO  - 10.1021/acs.energyfuels.7b03897
ER  - 

@article{
author = "Polovina, Saša and Vojtech, Merva and Dejanovic, Igor and Grujić, Aleksandar and Stijepović, Mirko Z.",
year = "2018",
abstract = "Continuous catalytic reforming (CCR) is known to convert refinery naphtha to a high-octane liquid product, also known as the reformate. In this paper, a First Principle Reaction Section Model for a CCR process is presented. Even though CCR is a well-established technology, the application of advanced, real-time optimization techniques that are able to quickly respond to any imposed changes onto the process, are necessary in the refinery business. This becomes particularly important as a result of changes in profit margin, changes in operating cost, and the introduction of new environmental legislations. Hence, we present a kinetic model for the CCR process using the so-called "lumped" concept. The reactors have been modeled using a quasi-steady-state approach. The unknown model parameters have been estimated by bench marking the First Principle Reaction Section results with a commercial CCR process owned by the Hungarian Oil and Gas Public Limited Company (INA-MOL). The proposed model has been tested and compared to data obtained from an existing CCR plant. The predictions of the model were found to be in good agreement with the experimental data. The relative absolute errors between the measured and model estimated variables have been found to be lower than 2%. The relative absolute error associated with the required fired heater duties were less than 1.0%. Simulating the reaction section of the CCR process requires less than 0.1 s of CPU time, which clearly indicates that this model can be very suitable for performing optimization studies. Moreover, this study shows that, although there is fluctuation in the composition of feedstock, the lumped kinetic approach was capable to predict the behavior of the CCR process well.",
publisher = "American Chemical Society (ACS)",
journal = "Energy & Fuels",
title = "Modeling a Reaction Section of a Commercial Continuous Catalytic Reformer",
volume = "32",
number = "5",
pages = "6378-6396",
doi = "10.1021/acs.energyfuels.7b03897"
}

Polovina, S., Vojtech, M., Dejanovic, I., Grujić, A.,& Stijepović, M. Z.. (2018). Modeling a Reaction Section of a Commercial Continuous Catalytic Reformer. in Energy & Fuels
American Chemical Society (ACS)., 32(5), 6378-6396.
https://doi.org/10.1021/acs.energyfuels.7b03897

Polovina S, Vojtech M, Dejanovic I, Grujić A, Stijepović MZ. Modeling a Reaction Section of a Commercial Continuous Catalytic Reformer. in Energy & Fuels. 2018;32(5):6378-6396.
doi:10.1021/acs.energyfuels.7b03897 .

Polovina, Saša, Vojtech, Merva, Dejanovic, Igor, Grujić, Aleksandar, Stijepović, Mirko Z., "Modeling a Reaction Section of a Commercial Continuous Catalytic Reformer" in Energy & Fuels, 32, no. 5 (2018):6378-6396,
https://doi.org/10.1021/acs.energyfuels.7b03897 . .

TY  - JOUR
AU  - Polovina, Saša
AU  - Vojtech, Merva
AU  - Dejanovic, Igor
AU  - Grujić, Aleksandar
AU  - Stijepović, Mirko Z.
PY  - 2018
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4287
AB  - Continuous catalytic reforming (CCR) is known to convert refinery naphtha to a high-octane liquid product, also known as the reformate. In this paper, a First Principle Reaction Section Model for a CCR process is presented. Even though CCR is a well-established technology, the application of advanced, real-time optimization techniques that are able to quickly respond to any imposed changes onto the process, are necessary in the refinery business. This becomes particularly important as a result of changes in profit margin, changes in operating cost, and the introduction of new environmental legislations. Hence, we present a kinetic model for the CCR process using the so-called "lumped" concept. The reactors have been modeled using a quasi-steady-state approach. The unknown model parameters have been estimated by bench marking the First Principle Reaction Section results with a commercial CCR process owned by the Hungarian Oil and Gas Public Limited Company (INA-MOL). The proposed model has been tested and compared to data obtained from an existing CCR plant. The predictions of the model were found to be in good agreement with the experimental data. The relative absolute errors between the measured and model estimated variables have been found to be lower than 2%. The relative absolute error associated with the required fired heater duties were less than 1.0%. Simulating the reaction section of the CCR process requires less than 0.1 s of CPU time, which clearly indicates that this model can be very suitable for performing optimization studies. Moreover, this study shows that, although there is fluctuation in the composition of feedstock, the lumped kinetic approach was capable to predict the behavior of the CCR process well.
PB  - American Chemical Society (ACS)
T2  - Energy & Fuels
T1  - Modeling a Reaction Section of a Commercial Continuous Catalytic Reformer
VL  - 32
IS  - 5
SP  - 6378
EP  - 6396
DO  - 10.1021/acs.energyfuels.7b03897
ER  - 

@article{
author = "Polovina, Saša and Vojtech, Merva and Dejanovic, Igor and Grujić, Aleksandar and Stijepović, Mirko Z.",
year = "2018",
abstract = "Continuous catalytic reforming (CCR) is known to convert refinery naphtha to a high-octane liquid product, also known as the reformate. In this paper, a First Principle Reaction Section Model for a CCR process is presented. Even though CCR is a well-established technology, the application of advanced, real-time optimization techniques that are able to quickly respond to any imposed changes onto the process, are necessary in the refinery business. This becomes particularly important as a result of changes in profit margin, changes in operating cost, and the introduction of new environmental legislations. Hence, we present a kinetic model for the CCR process using the so-called "lumped" concept. The reactors have been modeled using a quasi-steady-state approach. The unknown model parameters have been estimated by bench marking the First Principle Reaction Section results with a commercial CCR process owned by the Hungarian Oil and Gas Public Limited Company (INA-MOL). The proposed model has been tested and compared to data obtained from an existing CCR plant. The predictions of the model were found to be in good agreement with the experimental data. The relative absolute errors between the measured and model estimated variables have been found to be lower than 2%. The relative absolute error associated with the required fired heater duties were less than 1.0%. Simulating the reaction section of the CCR process requires less than 0.1 s of CPU time, which clearly indicates that this model can be very suitable for performing optimization studies. Moreover, this study shows that, although there is fluctuation in the composition of feedstock, the lumped kinetic approach was capable to predict the behavior of the CCR process well.",
publisher = "American Chemical Society (ACS)",
journal = "Energy & Fuels",
title = "Modeling a Reaction Section of a Commercial Continuous Catalytic Reformer",
volume = "32",
number = "5",
pages = "6378-6396",
doi = "10.1021/acs.energyfuels.7b03897"
}

Polovina, S., Vojtech, M., Dejanovic, I., Grujić, A.,& Stijepović, M. Z.. (2018). Modeling a Reaction Section of a Commercial Continuous Catalytic Reformer. in Energy & Fuels
American Chemical Society (ACS)., 32(5), 6378-6396.
https://doi.org/10.1021/acs.energyfuels.7b03897

Polovina S, Vojtech M, Dejanovic I, Grujić A, Stijepović MZ. Modeling a Reaction Section of a Commercial Continuous Catalytic Reformer. in Energy & Fuels. 2018;32(5):6378-6396.
doi:10.1021/acs.energyfuels.7b03897 .

Polovina, Saša, Vojtech, Merva, Dejanovic, Igor, Grujić, Aleksandar, Stijepović, Mirko Z., "Modeling a Reaction Section of a Commercial Continuous Catalytic Reformer" in Energy & Fuels, 32, no. 5 (2018):6378-6396,
https://doi.org/10.1021/acs.energyfuels.7b03897 . .

TY  - JOUR
AU  - Grujić, Aleksandar
AU  - Stajić-Trošić, Jasna
AU  - Stijepović, Mirko Z.
AU  - Perišić, Srđan
AU  - Žák, Tomáš
PY  - 2017
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2082
AB  - The Nd-Fe-B-barium ferrite hybrid composite materials with epoxy matrix presented in this paper cover maximum energy product from 1 to 13 MGOe. Mixture of magnetic particles is responsible for high magnetic quality, while the thermosetting resin plays a role in mechanical properties. Samples with various ratio of Nd-Fe-B to barium ferrite in constant weight of epoxy resin are examined by tensile strength measurements. Magnetic measurements carried out by using vibrating sample magnetometer (VSM) show typical hysteresis loop. A structural analysis of composite surface is conducted by scanning electron microscope (SEM). Uniform particle distribution of plate shape Nd-Fe-B particles and spherical barium ferrite agglomerates is essential for both, mechanical and magnetic properties of composite materials. Fine particles are incorporated in-between larger particles in epoxy bulk which lead to improving the properties.
AB  - U ovom radu proučavani su hibridni Nd-Fe-B-barijum ferit kompozitni materijali sa epoksi matricom čiji se maksimani energetski proizvod kreće od 1 do 13 MGOe. Odlična magnetna svojstva kompozita potiču od smeše magnetnih čestica, dok termoočvršćavajući polimer ima uticaj na mehanička svojstva. Uzorci sa različitim odnosom udela Nd-Fe-B i barijum ferita u konstantnoj masi epoksi veziva su ispitivani na zateznu čvrstoću. Magnetna merenja vršena pomoću vibracionog magnetometra (VSM) pokazuju karakteristučnu histerezisnu petlju. Strukturnu analizu na površini kompozita sprovedena pomoću skenirajuće elektronske mikroskopije (SEM). Uniformna raspodela pločastih Nd-Fe-B čestica i sferičnih aglomerata barijum ferita je veoma značajna i za mehanička i za magnetna svojstva kompozitnih materijala. Sitne čestice su inkorporirane između velikih čestica u masi epoksida što dovodi do poboljšanja svojstava.
PB  - Belgrade, Serbia : Engineering Society for Corrosion
T2  - Zaštita materijala
T1  - Tensile strength properties of hybrid magnetic composite materials
T1  - Zatezna čvrstoća hibridnih magnetnih kompozitnih materijala
VL  - 58
IS  - 4
SP  - 570
EP  - 575
DO  - 10.5937/ZasMat1704570G
ER  - 

@article{
author = "Grujić, Aleksandar and Stajić-Trošić, Jasna and Stijepović, Mirko Z. and Perišić, Srđan and Žák, Tomáš",
year = "2017",
abstract = "The Nd-Fe-B-barium ferrite hybrid composite materials with epoxy matrix presented in this paper cover maximum energy product from 1 to 13 MGOe. Mixture of magnetic particles is responsible for high magnetic quality, while the thermosetting resin plays a role in mechanical properties. Samples with various ratio of Nd-Fe-B to barium ferrite in constant weight of epoxy resin are examined by tensile strength measurements. Magnetic measurements carried out by using vibrating sample magnetometer (VSM) show typical hysteresis loop. A structural analysis of composite surface is conducted by scanning electron microscope (SEM). Uniform particle distribution of plate shape Nd-Fe-B particles and spherical barium ferrite agglomerates is essential for both, mechanical and magnetic properties of composite materials. Fine particles are incorporated in-between larger particles in epoxy bulk which lead to improving the properties., U ovom radu proučavani su hibridni Nd-Fe-B-barijum ferit kompozitni materijali sa epoksi matricom čiji se maksimani energetski proizvod kreće od 1 do 13 MGOe. Odlična magnetna svojstva kompozita potiču od smeše magnetnih čestica, dok termoočvršćavajući polimer ima uticaj na mehanička svojstva. Uzorci sa različitim odnosom udela Nd-Fe-B i barijum ferita u konstantnoj masi epoksi veziva su ispitivani na zateznu čvrstoću. Magnetna merenja vršena pomoću vibracionog magnetometra (VSM) pokazuju karakteristučnu histerezisnu petlju. Strukturnu analizu na površini kompozita sprovedena pomoću skenirajuće elektronske mikroskopije (SEM). Uniformna raspodela pločastih Nd-Fe-B čestica i sferičnih aglomerata barijum ferita je veoma značajna i za mehanička i za magnetna svojstva kompozitnih materijala. Sitne čestice su inkorporirane između velikih čestica u masi epoksida što dovodi do poboljšanja svojstava.",
publisher = "Belgrade, Serbia : Engineering Society for Corrosion",
journal = "Zaštita materijala",
title = "Tensile strength properties of hybrid magnetic composite materials, Zatezna čvrstoća hibridnih magnetnih kompozitnih materijala",
volume = "58",
number = "4",
pages = "570-575",
doi = "10.5937/ZasMat1704570G"
}

Grujić, A., Stajić-Trošić, J., Stijepović, M. Z., Perišić, S.,& Žák, T.. (2017). Tensile strength properties of hybrid magnetic composite materials. in Zaštita materijala
Belgrade, Serbia : Engineering Society for Corrosion., 58(4), 570-575.
https://doi.org/10.5937/ZasMat1704570G

Grujić A, Stajić-Trošić J, Stijepović MZ, Perišić S, Žák T. Tensile strength properties of hybrid magnetic composite materials. in Zaštita materijala. 2017;58(4):570-575.
doi:10.5937/ZasMat1704570G .

Grujić, Aleksandar, Stajić-Trošić, Jasna, Stijepović, Mirko Z., Perišić, Srđan, Žák, Tomáš, "Tensile strength properties of hybrid magnetic composite materials" in Zaštita materijala, 58, no. 4 (2017):570-575,
https://doi.org/10.5937/ZasMat1704570G . .

TY  - JOUR
AU  - Zarić, Milana
AU  - Stijepović, Mirko Z.
AU  - Linke, Patrick
AU  - Stajić-Trošić, Jasna
AU  - Bugarski, Branko
AU  - Kijevčanin, Mirjana
PY  - 2017
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2235
AB  - In order to reduce the usage of fossil fuels in industrial sectors by meeting the requirements of production processes, new heat integration and heat recovery approaches are developed. The goal of this study is to develop an approach to increase energy efficiency of an industrial zone by recovering and reusing waste heat via indirect heat integration. Industrial zones usually consist of multiple independent plants, where each plant is supplied by an independent utility system, as a decentralized system. In this study, a new approach is developed to target minimum energy requirements where an industrial zone would be supplied by a centralized utility system instead of decentralized utility system. The approach assumes that all process plants in an industrial zone are linked through the central utility system. This method is formulated as a linear programming problem (LP). Moreover, the proposed method may be used for decision making related to energy integration strategy of an industrial zone. In addition, the proposed method was applied on a case study. The results revealed that saving of fossil fuel could be achieved.
PB  - Association of the Chemical Engineers of Serbia
T2  - Chemical Industry and Chemical Engineering Quarterly / CICEQ
T1  - Targeting heat recovery and reuse in industrial zone
VL  - 23
IS  - 1
SP  - 73
EP  - 82
DO  - 10.2298/CICEQ150622009Z
ER  - 

@article{
author = "Zarić, Milana and Stijepović, Mirko Z. and Linke, Patrick and Stajić-Trošić, Jasna and Bugarski, Branko and Kijevčanin, Mirjana",
year = "2017",
abstract = "In order to reduce the usage of fossil fuels in industrial sectors by meeting the requirements of production processes, new heat integration and heat recovery approaches are developed. The goal of this study is to develop an approach to increase energy efficiency of an industrial zone by recovering and reusing waste heat via indirect heat integration. Industrial zones usually consist of multiple independent plants, where each plant is supplied by an independent utility system, as a decentralized system. In this study, a new approach is developed to target minimum energy requirements where an industrial zone would be supplied by a centralized utility system instead of decentralized utility system. The approach assumes that all process plants in an industrial zone are linked through the central utility system. This method is formulated as a linear programming problem (LP). Moreover, the proposed method may be used for decision making related to energy integration strategy of an industrial zone. In addition, the proposed method was applied on a case study. The results revealed that saving of fossil fuel could be achieved.",
publisher = "Association of the Chemical Engineers of Serbia",
journal = "Chemical Industry and Chemical Engineering Quarterly / CICEQ",
title = "Targeting heat recovery and reuse in industrial zone",
volume = "23",
number = "1",
pages = "73-82",
doi = "10.2298/CICEQ150622009Z"
}

Zarić, M., Stijepović, M. Z., Linke, P., Stajić-Trošić, J., Bugarski, B.,& Kijevčanin, M.. (2017). Targeting heat recovery and reuse in industrial zone. in Chemical Industry and Chemical Engineering Quarterly / CICEQ
Association of the Chemical Engineers of Serbia., 23(1), 73-82.
https://doi.org/10.2298/CICEQ150622009Z

Zarić M, Stijepović MZ, Linke P, Stajić-Trošić J, Bugarski B, Kijevčanin M. Targeting heat recovery and reuse in industrial zone. in Chemical Industry and Chemical Engineering Quarterly / CICEQ. 2017;23(1):73-82.
doi:10.2298/CICEQ150622009Z .

Zarić, Milana, Stijepović, Mirko Z., Linke, Patrick, Stajić-Trošić, Jasna, Bugarski, Branko, Kijevčanin, Mirjana, "Targeting heat recovery and reuse in industrial zone" in Chemical Industry and Chemical Engineering Quarterly / CICEQ, 23, no. 1 (2017):73-82,
https://doi.org/10.2298/CICEQ150622009Z . .

TY  - JOUR
AU  - Stijepović, Mirko Z.
AU  - Papadopoulos, Athanasios I.
AU  - Linke, Patrick
AU  - Stijepović, Vladimir
AU  - Grujić, Aleksandar
AU  - Kijevčanin, Mirjana
AU  - Seferlis, Panos
PY  - 2017
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2229
AB  - This work presents a systematic approach toward the design of Organic Rankine Cycles (ORC) for the generation of power from multiple heat sources available at different temperature levels. The design problem is approached in a mixed-integer non-linear programming (MINLP) formulation where an inclusive and flexible ORC model is automatically evolved by a deterministic algorithm for global optimization. The basic building block of the model is the ORC cascade which consists of a heat extraction, a power generation, a condensation and a liquid pressurization section. The aim of the optimization is to determine the optimum number of ORC cascades, the structure of the heat exchanger network shared among different cascades, the operating conditions and the working fluid used in each cascade in order to identify an overall ORC structure that maximizes the power output. The approach is illustrated through a case study which indicates that a system of two waste heat sources is best exploited through two interconnected ORC utilizing different working fluids.
PB  - Elsevier Sci Ltd, Oxford
T2  - Journal of Cleaner Production
T1  - Organic Rankine Cycle system performance targeting and design for multiple heat sources with simultaneous working fluid selection
VL  - 142
SP  - 1950
EP  - 1970
DO  - 10.1016/j.jclepro.2016.11.088
ER  - 

@article{
author = "Stijepović, Mirko Z. and Papadopoulos, Athanasios I. and Linke, Patrick and Stijepović, Vladimir and Grujić, Aleksandar and Kijevčanin, Mirjana and Seferlis, Panos",
year = "2017",
abstract = "This work presents a systematic approach toward the design of Organic Rankine Cycles (ORC) for the generation of power from multiple heat sources available at different temperature levels. The design problem is approached in a mixed-integer non-linear programming (MINLP) formulation where an inclusive and flexible ORC model is automatically evolved by a deterministic algorithm for global optimization. The basic building block of the model is the ORC cascade which consists of a heat extraction, a power generation, a condensation and a liquid pressurization section. The aim of the optimization is to determine the optimum number of ORC cascades, the structure of the heat exchanger network shared among different cascades, the operating conditions and the working fluid used in each cascade in order to identify an overall ORC structure that maximizes the power output. The approach is illustrated through a case study which indicates that a system of two waste heat sources is best exploited through two interconnected ORC utilizing different working fluids.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Journal of Cleaner Production",
title = "Organic Rankine Cycle system performance targeting and design for multiple heat sources with simultaneous working fluid selection",
volume = "142",
pages = "1950-1970",
doi = "10.1016/j.jclepro.2016.11.088"
}

Stijepović, M. Z., Papadopoulos, A. I., Linke, P., Stijepović, V., Grujić, A., Kijevčanin, M.,& Seferlis, P.. (2017). Organic Rankine Cycle system performance targeting and design for multiple heat sources with simultaneous working fluid selection. in Journal of Cleaner Production
Elsevier Sci Ltd, Oxford., 142, 1950-1970.
https://doi.org/10.1016/j.jclepro.2016.11.088

Stijepović MZ, Papadopoulos AI, Linke P, Stijepović V, Grujić A, Kijevčanin M, Seferlis P. Organic Rankine Cycle system performance targeting and design for multiple heat sources with simultaneous working fluid selection. in Journal of Cleaner Production. 2017;142:1950-1970.
doi:10.1016/j.jclepro.2016.11.088 .

Stijepović, Mirko Z., Papadopoulos, Athanasios I., Linke, Patrick, Stijepović, Vladimir, Grujić, Aleksandar, Kijevčanin, Mirjana, Seferlis, Panos, "Organic Rankine Cycle system performance targeting and design for multiple heat sources with simultaneous working fluid selection" in Journal of Cleaner Production, 142 (2017):1950-1970,
https://doi.org/10.1016/j.jclepro.2016.11.088 . .

TY  - JOUR
AU  - Stijepović, Mirko Z.
AU  - Papadopoulos, Athanasios I.
AU  - Linke, Patrick
AU  - Stijepović, Vladimir
AU  - Grujić, Aleksandar
AU  - Kijevčanin, Mirjana
AU  - Seferlis, Panos
PY  - 2017
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3032
AB  - This work presents a systematic approach toward the design of Organic Rankine Cycles (ORC) for the generation of power from multiple heat sources available at different temperature levels. The design problem is approached in a mixed-integer non-linear programming (MINLP) formulation where an inclusive and flexible ORC model is automatically evolved by a deterministic algorithm for global optimization. The basic building block of the model is the ORC cascade which consists of a heat extraction, a power generation, a condensation and a liquid pressurization section. The aim of the optimization is to determine the optimum number of ORC cascades, the structure of the heat exchanger network shared among different cascades, the operating conditions and the working fluid used in each cascade in order to identify an overall ORC structure that maximizes the power output. The approach is illustrated through a case study which indicates that a system of two waste heat sources is best exploited through two interconnected ORC utilizing different working fluids.
PB  - Elsevier Sci Ltd, Oxford
T2  - Journal of Cleaner Production
T1  - Organic Rankine Cycle system performance targeting and design for multiple heat sources with simultaneous working fluid selection
VL  - 142
SP  - 1950
EP  - 1970
DO  - 10.1016/j.jclepro.2016.11.088
ER  - 

@article{
author = "Stijepović, Mirko Z. and Papadopoulos, Athanasios I. and Linke, Patrick and Stijepović, Vladimir and Grujić, Aleksandar and Kijevčanin, Mirjana and Seferlis, Panos",
year = "2017",
abstract = "This work presents a systematic approach toward the design of Organic Rankine Cycles (ORC) for the generation of power from multiple heat sources available at different temperature levels. The design problem is approached in a mixed-integer non-linear programming (MINLP) formulation where an inclusive and flexible ORC model is automatically evolved by a deterministic algorithm for global optimization. The basic building block of the model is the ORC cascade which consists of a heat extraction, a power generation, a condensation and a liquid pressurization section. The aim of the optimization is to determine the optimum number of ORC cascades, the structure of the heat exchanger network shared among different cascades, the operating conditions and the working fluid used in each cascade in order to identify an overall ORC structure that maximizes the power output. The approach is illustrated through a case study which indicates that a system of two waste heat sources is best exploited through two interconnected ORC utilizing different working fluids.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Journal of Cleaner Production",
title = "Organic Rankine Cycle system performance targeting and design for multiple heat sources with simultaneous working fluid selection",
volume = "142",
pages = "1950-1970",
doi = "10.1016/j.jclepro.2016.11.088"
}

Stijepović, M. Z., Papadopoulos, A. I., Linke, P., Stijepović, V., Grujić, A., Kijevčanin, M.,& Seferlis, P.. (2017). Organic Rankine Cycle system performance targeting and design for multiple heat sources with simultaneous working fluid selection. in Journal of Cleaner Production
Elsevier Sci Ltd, Oxford., 142, 1950-1970.
https://doi.org/10.1016/j.jclepro.2016.11.088

Stijepović MZ, Papadopoulos AI, Linke P, Stijepović V, Grujić A, Kijevčanin M, Seferlis P. Organic Rankine Cycle system performance targeting and design for multiple heat sources with simultaneous working fluid selection. in Journal of Cleaner Production. 2017;142:1950-1970.
doi:10.1016/j.jclepro.2016.11.088 .

Stijepović, Mirko Z., Papadopoulos, Athanasios I., Linke, Patrick, Stijepović, Vladimir, Grujić, Aleksandar, Kijevčanin, Mirjana, Seferlis, Panos, "Organic Rankine Cycle system performance targeting and design for multiple heat sources with simultaneous working fluid selection" in Journal of Cleaner Production, 142 (2017):1950-1970,
https://doi.org/10.1016/j.jclepro.2016.11.088 . .

TY  - JOUR
AU  - Nedeljković, Dragutin
AU  - Stajčić, Aleksandar
AU  - Grujić, Aleksandar
AU  - Stijepović, Mirko Z.
AU  - Stajić-Trošić, Jasna
PY  - 2015
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1637
AB  - The main task of the work is to construct the polymeric membrane that could be used for the waste gases treatment. For this purpose, membrane must have high permeability for the carbon dioxide and low permeability of the other gases commonly present in waste gases (hydrogen, oxygen, nitrogen and methane). The constructed membranes were of a dense type, based on a solubility/diffusivity mechanism. In order to enchase the permeability of carbon dioxide, four different zeolytes were added, and in order to improve mechanical stability two different additives were tested. Three zeolytes were with the 3-dimensional pores (ZSM5; Faujasite Linde type A) and one was with the 1-dimensional pores (Linde type L). As an additive, n-tetradecyldimethylamonium bromide - n-C14TMABr was tested. The aim of an additive was to provide good wetting of a highly electrically charged zeolyte particle by the hydrophobic polymer chains. The other examined additive was dimethylaminopyridine (DMAP) which should improve the solubility of carbon dioxide due to its alkali properties. The best results in carbon dioxide/hydrogen selectivity and permeability were obtained with the membrane constructed with PEBAX 1657 and surface treated zeolyte. The obtained permeability of carbon dioxide was 128 Barrer, and the carbon dioxide/hydrogen selectivity was 9.7.
AB  - Cilj istraživanja prikazanih u ovom radu je izrada polimerne membrane koja bi imala primenu u prečišćavanju otpadnih gasova. Membrana konstruisana za ovu primenu bi morala da ima visoku permeabilnost za ugljen-dioksid i nisku permeabilnost za druge gasove koji su standardno prisutni u otpadnim gasovima (vodonik, kiseonik, azot i metan). Dobijene membrane pripadaju tipu neporoznih membrana čija se permeabilnost bazira na mehanizmu rastvaranja i difuzije. U ovom radu, ispitivana je mogućnost primene poli(etilenoksida) - kopoli(ftalamida) za ovu svrhu. Da bi se povećala permeabilnost ugljen-dioksida, dodate su četiri različite vrste zeolitnih prahova, a u cilju poboljšanja mehaničkih svojstava, ispitivana su dva aditiva. Tri zeolitna praha korišćena u eksperimentu imaju trodimenzionalne pore (ZSM5, Faujasit i Linde zeolit tip A), a jedan prah je sa jednodimenzionalnim porama (Linde zeolit tip L). Kao aditiv je testiran n-tetradeciltrimetilamonijum bromid. Cilj dodavanja ovog aditiva je da omogući dobar kontakt između dugih, hidrofobnih polimernih lanaca i naelektrisanih čestica zeolita. Drugi ispitivani aditiv je dimetilaminopiridin, čija bi bazna svojstva trebalo da poboljšaju rastvorljovost ugljen dioksida. Najbolji rezultati su postignuti korišćenjem membrane konstruisane sa PEBAX 1657 polimerom i zeolitom u prisustvu aditiva.
PB  - Savez inženjera i tehničara Srbije
T2  - Tehnika
T1  - The application of the zeolyte powder for the construction of the dense composite membranes for the carbon-dioxide separation
T1  - Primena zeolitnih prahova za izradu kompozitnih polimernih membrana za separaciju ugljen-dioksida
VL  - 70
IS  - 2
SP  - 216
EP  - 222
DO  - 10.5937/tehnika1502216N
ER  - 

@article{
author = "Nedeljković, Dragutin and Stajčić, Aleksandar and Grujić, Aleksandar and Stijepović, Mirko Z. and Stajić-Trošić, Jasna",
year = "2015",
abstract = "The main task of the work is to construct the polymeric membrane that could be used for the waste gases treatment. For this purpose, membrane must have high permeability for the carbon dioxide and low permeability of the other gases commonly present in waste gases (hydrogen, oxygen, nitrogen and methane). The constructed membranes were of a dense type, based on a solubility/diffusivity mechanism. In order to enchase the permeability of carbon dioxide, four different zeolytes were added, and in order to improve mechanical stability two different additives were tested. Three zeolytes were with the 3-dimensional pores (ZSM5; Faujasite Linde type A) and one was with the 1-dimensional pores (Linde type L). As an additive, n-tetradecyldimethylamonium bromide - n-C14TMABr was tested. The aim of an additive was to provide good wetting of a highly electrically charged zeolyte particle by the hydrophobic polymer chains. The other examined additive was dimethylaminopyridine (DMAP) which should improve the solubility of carbon dioxide due to its alkali properties. The best results in carbon dioxide/hydrogen selectivity and permeability were obtained with the membrane constructed with PEBAX 1657 and surface treated zeolyte. The obtained permeability of carbon dioxide was 128 Barrer, and the carbon dioxide/hydrogen selectivity was 9.7., Cilj istraživanja prikazanih u ovom radu je izrada polimerne membrane koja bi imala primenu u prečišćavanju otpadnih gasova. Membrana konstruisana za ovu primenu bi morala da ima visoku permeabilnost za ugljen-dioksid i nisku permeabilnost za druge gasove koji su standardno prisutni u otpadnim gasovima (vodonik, kiseonik, azot i metan). Dobijene membrane pripadaju tipu neporoznih membrana čija se permeabilnost bazira na mehanizmu rastvaranja i difuzije. U ovom radu, ispitivana je mogućnost primene poli(etilenoksida) - kopoli(ftalamida) za ovu svrhu. Da bi se povećala permeabilnost ugljen-dioksida, dodate su četiri različite vrste zeolitnih prahova, a u cilju poboljšanja mehaničkih svojstava, ispitivana su dva aditiva. Tri zeolitna praha korišćena u eksperimentu imaju trodimenzionalne pore (ZSM5, Faujasit i Linde zeolit tip A), a jedan prah je sa jednodimenzionalnim porama (Linde zeolit tip L). Kao aditiv je testiran n-tetradeciltrimetilamonijum bromid. Cilj dodavanja ovog aditiva je da omogući dobar kontakt između dugih, hidrofobnih polimernih lanaca i naelektrisanih čestica zeolita. Drugi ispitivani aditiv je dimetilaminopiridin, čija bi bazna svojstva trebalo da poboljšaju rastvorljovost ugljen dioksida. Najbolji rezultati su postignuti korišćenjem membrane konstruisane sa PEBAX 1657 polimerom i zeolitom u prisustvu aditiva.",
publisher = "Savez inženjera i tehničara Srbije",
journal = "Tehnika",
title = "The application of the zeolyte powder for the construction of the dense composite membranes for the carbon-dioxide separation, Primena zeolitnih prahova za izradu kompozitnih polimernih membrana za separaciju ugljen-dioksida",
volume = "70",
number = "2",
pages = "216-222",
doi = "10.5937/tehnika1502216N"
}

Nedeljković, D., Stajčić, A., Grujić, A., Stijepović, M. Z.,& Stajić-Trošić, J.. (2015). The application of the zeolyte powder for the construction of the dense composite membranes for the carbon-dioxide separation. in Tehnika
Savez inženjera i tehničara Srbije., 70(2), 216-222.
https://doi.org/10.5937/tehnika1502216N

Nedeljković D, Stajčić A, Grujić A, Stijepović MZ, Stajić-Trošić J. The application of the zeolyte powder for the construction of the dense composite membranes for the carbon-dioxide separation. in Tehnika. 2015;70(2):216-222.
doi:10.5937/tehnika1502216N .

Nedeljković, Dragutin, Stajčić, Aleksandar, Grujić, Aleksandar, Stijepović, Mirko Z., Stajić-Trošić, Jasna, "The application of the zeolyte powder for the construction of the dense composite membranes for the carbon-dioxide separation" in Tehnika, 70, no. 2 (2015):216-222,
https://doi.org/10.5937/tehnika1502216N . .

TY  - JOUR
AU  - Ilić-Pajić, Jovana
AU  - Grujić, Aleksandar
AU  - Stijepović, Mirko Z.
AU  - Stajić-Trošić, Jasna
AU  - Bugarski, Branko
PY  - 2015
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1695
AB  - The aim of this paper is to obtain microbeads of natural polymers such as alginate and chitosan. These microbeads were used as potential carriers for the active ingredients so that in this study the diffusion of various substances from them is analyzed. Alginate microbeads were obtained by electrostatic droplet method. In the resulting microbeads was performed absorption of three tracer indicators with different molecular weight (acridine orange, blue dextran, methylene blue). The goal of the experiment is to monitor indicators release kinetics from microbeads. Based on these measurements the layoffs curve should give an answer on the impact of the molecular size of the three indicators on the diffusion rate of microbeads. In order to achieve the slow release of indicators alginate microbeads were coated with chitosan. Chitosan has an impact on reducing the porosity of gel, which further led to lower release tracer indicators of microbeads. Comparative analysis of the obtained layoffs curves answers about the impact on the process of obtaining micro diffusion rate indicator.
AB  - U ovom radu je prikazan proces sinteze mikročestica od prirodnih polimera, alginata i hitozana, kao i neka njihova svojstva. Osnovna primena ovih mikročestica je da se koriste kao potencijalni nosači za aktivne supstance. U tom smislu je ispitivana i difuzija različitih supstanci iz njih. Na alginatne mikročestice dobijene metodom elektrostatičke ekstruzije vršena je apsorpcija tri trejserska indikatora sa različitim molekulskim masama: akridin oranž, plavi dekstran i metilensko plavo. Praćenjem kinetike otpuštanja indikatora iz mikročestica konstruisane su krive otpuštanja koje daju informaciju o uticaju veličine molekula svakog od indikatora na brzinu difuzije iz mikročestica. Da bi se postiglo što sporije otpuštanje indikatora alginatne mikročestice su oblagane hitozanom. Hitozan ima uticaj na smanjenje poroznosti gela, što dovodi do sporijeg otpuštanja trejsersikh indikatora iz mikročestica. Uporedna analiza dobijenih krivih otpuštanja daje odgovor o uticaju postupka dobijanja mikročestica na brzinu difuzije indikatora.
PB  - Savez inženjera i tehničara Srbije
T2  - Tehnika
T1  - Effect of tracers molecular weight on the release process from alginate microbeads
T1  - Uticaj molekulske mase trejserskih indikatora na kontrolisano otpuštanje iz alginatnih mikročestica
VL  - 70
IS  - 3
SP  - 401
EP  - 405
DO  - 10.5937/tehnika1503401I
ER  - 

@article{
author = "Ilić-Pajić, Jovana and Grujić, Aleksandar and Stijepović, Mirko Z. and Stajić-Trošić, Jasna and Bugarski, Branko",
year = "2015",
abstract = "The aim of this paper is to obtain microbeads of natural polymers such as alginate and chitosan. These microbeads were used as potential carriers for the active ingredients so that in this study the diffusion of various substances from them is analyzed. Alginate microbeads were obtained by electrostatic droplet method. In the resulting microbeads was performed absorption of three tracer indicators with different molecular weight (acridine orange, blue dextran, methylene blue). The goal of the experiment is to monitor indicators release kinetics from microbeads. Based on these measurements the layoffs curve should give an answer on the impact of the molecular size of the three indicators on the diffusion rate of microbeads. In order to achieve the slow release of indicators alginate microbeads were coated with chitosan. Chitosan has an impact on reducing the porosity of gel, which further led to lower release tracer indicators of microbeads. Comparative analysis of the obtained layoffs curves answers about the impact on the process of obtaining micro diffusion rate indicator., U ovom radu je prikazan proces sinteze mikročestica od prirodnih polimera, alginata i hitozana, kao i neka njihova svojstva. Osnovna primena ovih mikročestica je da se koriste kao potencijalni nosači za aktivne supstance. U tom smislu je ispitivana i difuzija različitih supstanci iz njih. Na alginatne mikročestice dobijene metodom elektrostatičke ekstruzije vršena je apsorpcija tri trejserska indikatora sa različitim molekulskim masama: akridin oranž, plavi dekstran i metilensko plavo. Praćenjem kinetike otpuštanja indikatora iz mikročestica konstruisane su krive otpuštanja koje daju informaciju o uticaju veličine molekula svakog od indikatora na brzinu difuzije iz mikročestica. Da bi se postiglo što sporije otpuštanje indikatora alginatne mikročestice su oblagane hitozanom. Hitozan ima uticaj na smanjenje poroznosti gela, što dovodi do sporijeg otpuštanja trejsersikh indikatora iz mikročestica. Uporedna analiza dobijenih krivih otpuštanja daje odgovor o uticaju postupka dobijanja mikročestica na brzinu difuzije indikatora.",
publisher = "Savez inženjera i tehničara Srbije",
journal = "Tehnika",
title = "Effect of tracers molecular weight on the release process from alginate microbeads, Uticaj molekulske mase trejserskih indikatora na kontrolisano otpuštanje iz alginatnih mikročestica",
volume = "70",
number = "3",
pages = "401-405",
doi = "10.5937/tehnika1503401I"
}

Ilić-Pajić, J., Grujić, A., Stijepović, M. Z., Stajić-Trošić, J.,& Bugarski, B.. (2015). Effect of tracers molecular weight on the release process from alginate microbeads. in Tehnika
Savez inženjera i tehničara Srbije., 70(3), 401-405.
https://doi.org/10.5937/tehnika1503401I

Ilić-Pajić J, Grujić A, Stijepović MZ, Stajić-Trošić J, Bugarski B. Effect of tracers molecular weight on the release process from alginate microbeads. in Tehnika. 2015;70(3):401-405.
doi:10.5937/tehnika1503401I .

Ilić-Pajić, Jovana, Grujić, Aleksandar, Stijepović, Mirko Z., Stajić-Trošić, Jasna, Bugarski, Branko, "Effect of tracers molecular weight on the release process from alginate microbeads" in Tehnika, 70, no. 3 (2015):401-405,
https://doi.org/10.5937/tehnika1503401I . .

TY  - JOUR
AU  - Nedeljković, Dragutin
AU  - Stevanović, Marija P.
AU  - Stijepović, Mirko Z.
AU  - Stajčić, Aleksandar
AU  - Grujić, Aleksandar
AU  - Stajić-Trošić, Jasna
AU  - Stevanović, Jasmina
PY  - 2015
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1733
AB  - The aim of this study was to construct a polymer-based mixed matrix membrane that could be used for waste gases treatment. Therefore, high permeability for the carbon dioxide and low permeability for other gases commonly present in the industrial combustion waste gases (nitrogen, oxygen, hydrogen and methane) are essential. These membranes belong to the group of dense composite membranes, whose separation is based on the solution diffusion mechanism. In this paper, feasibility of the application of poly(ethylene oxide)-copoly(phtalamide) was tested. In order to enhance the permeability of carbon dioxide, three different zeolites with two-dimensional pores (IHW, NSI and TER) were incorporated, and in order to improve compatibility between the inorganic particles and polymer chains, n-tetradecyldimethylamonium bromide (NTAB) was added. The best results in carbon dioxide/hydrogen selectivity were obtained with the membrane constructed with PEBAX 1657 and surface treated zeolites, while better results concerning selectivity were gained with membranes based on Polyactive.
AB  - Cilj ovog rada je bio da se konstruiše neporozna kompozitna membrana bazirana na polimernom matriksu koja može da bude upotrebljena za tretman otpadnih gasova. Za ovu svrhu, neophodno je da membrana ima visoku permeabilnost za ugljen-dioksid i nisku permeabilnost za druge gasove koji ne najčešće sreću u produktima sagorevanja (azot, kiseonik, vodonik, metan). Ove membrane pripadaju grupi neporoznih membrana i mehanizam separacije gasova je baziran na rastvorljivosti i difuziji. U ovom radu, testirana je mogućnost primene poli(etilenoksida)-kopoli(ftalamida). Da bi se povećala permeabilnost ugljen-dioksida, dodavana su tri različita zeolitna praha, a da bi se poboljšala kompatibilnost neorganskih čestica i polimernih lanaca, dodat je n-tetradeciltrimetilamonijum-bromid (NTAB). Ispitivani zeoliti pripadaju grupi sa dvodimenzionalnim porama (IHW, NSI i TER). Najbolji rezultati u separaciji ugljen-dioksida i vodonika su postignuti kod membrana baziranim na polimeru PEBAX 1657 i zeolitima uz dodatak aditiva. Sa druge strane, bolja selektivnost je postignuta kod membrana baziranih na Polyactive polimeru.
PB  - Association of the Chemical Engineers of Serbia
T2  - Chemical Industry and Chemical Engineering Quarterly / CICEQ
T1  - The possibility of application of zeolyte powders for the construction of membranes for carbon dioxide separation
T1  - Mogućnost primene zeolitnih prahova za konstrukciju membrana za izdvajanje ugljen-dioksida
VL  - 21
IS  - 2
SP  - 277
EP  - 284
DO  - 10.2298/CICEQ130924025N
ER  - 

@article{
author = "Nedeljković, Dragutin and Stevanović, Marija P. and Stijepović, Mirko Z. and Stajčić, Aleksandar and Grujić, Aleksandar and Stajić-Trošić, Jasna and Stevanović, Jasmina",
year = "2015",
abstract = "The aim of this study was to construct a polymer-based mixed matrix membrane that could be used for waste gases treatment. Therefore, high permeability for the carbon dioxide and low permeability for other gases commonly present in the industrial combustion waste gases (nitrogen, oxygen, hydrogen and methane) are essential. These membranes belong to the group of dense composite membranes, whose separation is based on the solution diffusion mechanism. In this paper, feasibility of the application of poly(ethylene oxide)-copoly(phtalamide) was tested. In order to enhance the permeability of carbon dioxide, three different zeolites with two-dimensional pores (IHW, NSI and TER) were incorporated, and in order to improve compatibility between the inorganic particles and polymer chains, n-tetradecyldimethylamonium bromide (NTAB) was added. The best results in carbon dioxide/hydrogen selectivity were obtained with the membrane constructed with PEBAX 1657 and surface treated zeolites, while better results concerning selectivity were gained with membranes based on Polyactive., Cilj ovog rada je bio da se konstruiše neporozna kompozitna membrana bazirana na polimernom matriksu koja može da bude upotrebljena za tretman otpadnih gasova. Za ovu svrhu, neophodno je da membrana ima visoku permeabilnost za ugljen-dioksid i nisku permeabilnost za druge gasove koji ne najčešće sreću u produktima sagorevanja (azot, kiseonik, vodonik, metan). Ove membrane pripadaju grupi neporoznih membrana i mehanizam separacije gasova je baziran na rastvorljivosti i difuziji. U ovom radu, testirana je mogućnost primene poli(etilenoksida)-kopoli(ftalamida). Da bi se povećala permeabilnost ugljen-dioksida, dodavana su tri različita zeolitna praha, a da bi se poboljšala kompatibilnost neorganskih čestica i polimernih lanaca, dodat je n-tetradeciltrimetilamonijum-bromid (NTAB). Ispitivani zeoliti pripadaju grupi sa dvodimenzionalnim porama (IHW, NSI i TER). Najbolji rezultati u separaciji ugljen-dioksida i vodonika su postignuti kod membrana baziranim na polimeru PEBAX 1657 i zeolitima uz dodatak aditiva. Sa druge strane, bolja selektivnost je postignuta kod membrana baziranih na Polyactive polimeru.",
publisher = "Association of the Chemical Engineers of Serbia",
journal = "Chemical Industry and Chemical Engineering Quarterly / CICEQ",
title = "The possibility of application of zeolyte powders for the construction of membranes for carbon dioxide separation, Mogućnost primene zeolitnih prahova za konstrukciju membrana za izdvajanje ugljen-dioksida",
volume = "21",
number = "2",
pages = "277-284",
doi = "10.2298/CICEQ130924025N"
}

Nedeljković, D., Stevanović, M. P., Stijepović, M. Z., Stajčić, A., Grujić, A., Stajić-Trošić, J.,& Stevanović, J.. (2015). The possibility of application of zeolyte powders for the construction of membranes for carbon dioxide separation. in Chemical Industry and Chemical Engineering Quarterly / CICEQ
Association of the Chemical Engineers of Serbia., 21(2), 277-284.
https://doi.org/10.2298/CICEQ130924025N

Nedeljković D, Stevanović MP, Stijepović MZ, Stajčić A, Grujić A, Stajić-Trošić J, Stevanović J. The possibility of application of zeolyte powders for the construction of membranes for carbon dioxide separation. in Chemical Industry and Chemical Engineering Quarterly / CICEQ. 2015;21(2):277-284.
doi:10.2298/CICEQ130924025N .

Nedeljković, Dragutin, Stevanović, Marija P., Stijepović, Mirko Z., Stajčić, Aleksandar, Grujić, Aleksandar, Stajić-Trošić, Jasna, Stevanović, Jasmina, "The possibility of application of zeolyte powders for the construction of membranes for carbon dioxide separation" in Chemical Industry and Chemical Engineering Quarterly / CICEQ, 21, no. 2 (2015):277-284,
https://doi.org/10.2298/CICEQ130924025N . .

TY  - JOUR
AU  - Grujić, Aleksandar
AU  - Stijepović, Mirko
AU  - Stajić-Trošić, Jasna
AU  - Ilić, J.
AU  - Nedeljković, Dragutin
PY  - 2015
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3961
AB  - In this study, design of lab scale device for determination of separation properties of membranes is presented and analyzed. Device operates with different gas pressure between chambers, whereby gas streams perpendicular to the membrane. Using appropriate acquisition system and applying mathematical formulas, mechanism for gas transfer through the membrane is determinate. Polymer membranes based on zeolite are synthesized and tested by lab scale device. The membranes with various content of zeolite are tested with CO2 gas until optimal composition of membrane components is established. Beside good mechanical and structural properties of applied membrane, suitable values of permeability with good agreement with the literature data are obtained.
AB  - U ovom radu je prikazano i analizirano konstrukcijsko rešenje laboratorijskog uređaja za određivanje separacionih svojstava membrana. Rad uređaja je baziran na razlici pritisaka između komora, pri čemu gas struji normalno na poprečni presek membrana. Odgovarajućim sistemom za akviziciju podataka i primenom odgovarajućih matematičkih formula određen je mehanizam prenosa kroz membranu. Polimerne membrane na bazi zeolita su sintetizovane i testirane na uređaju. Membrane sa različitim udelim zeolita su testirane na CO2 gas, dok nije ustanovljen optimalan sastav komponenti za sintezu membrana.Pored dobrih mehaničkih i strukturnih svojstava testirane membrane, dobijene su zadovoljavajuće vrednosti permeabilnosti koje su u saglasnosti sa drugim autorima.
PB  - Bosnia and Herzegovina : University of East Sarajevo, Faculty of Technology
T2  - Journal of Engineering & Processing Management
T1  - A method for determination of separation properties of membranes
T1  - Metod za određivanje separacionih svojstava membrana
VL  - 7
IS  - 1
SP  - 45
EP  - 54
DO  - 10.7251/JEPMEN1507045G
ER  - 

@article{
author = "Grujić, Aleksandar and Stijepović, Mirko and Stajić-Trošić, Jasna and Ilić, J. and Nedeljković, Dragutin",
year = "2015",
abstract = "In this study, design of lab scale device for determination of separation properties of membranes is presented and analyzed. Device operates with different gas pressure between chambers, whereby gas streams perpendicular to the membrane. Using appropriate acquisition system and applying mathematical formulas, mechanism for gas transfer through the membrane is determinate. Polymer membranes based on zeolite are synthesized and tested by lab scale device. The membranes with various content of zeolite are tested with CO2 gas until optimal composition of membrane components is established. Beside good mechanical and structural properties of applied membrane, suitable values of permeability with good agreement with the literature data are obtained., U ovom radu je prikazano i analizirano konstrukcijsko rešenje laboratorijskog uređaja za određivanje separacionih svojstava membrana. Rad uređaja je baziran na razlici pritisaka između komora, pri čemu gas struji normalno na poprečni presek membrana. Odgovarajućim sistemom za akviziciju podataka i primenom odgovarajućih matematičkih formula određen je mehanizam prenosa kroz membranu. Polimerne membrane na bazi zeolita su sintetizovane i testirane na uređaju. Membrane sa različitim udelim zeolita su testirane na CO2 gas, dok nije ustanovljen optimalan sastav komponenti za sintezu membrana.Pored dobrih mehaničkih i strukturnih svojstava testirane membrane, dobijene su zadovoljavajuće vrednosti permeabilnosti koje su u saglasnosti sa drugim autorima.",
publisher = "Bosnia and Herzegovina : University of East Sarajevo, Faculty of Technology",
journal = "Journal of Engineering & Processing Management",
title = "A method for determination of separation properties of membranes, Metod za određivanje separacionih svojstava membrana",
volume = "7",
number = "1",
pages = "45-54",
doi = "10.7251/JEPMEN1507045G"
}

Grujić, A., Stijepović, M., Stajić-Trošić, J., Ilić, J.,& Nedeljković, D.. (2015). A method for determination of separation properties of membranes. in Journal of Engineering & Processing Management
Bosnia and Herzegovina : University of East Sarajevo, Faculty of Technology., 7(1), 45-54.
https://doi.org/10.7251/JEPMEN1507045G

Grujić A, Stijepović M, Stajić-Trošić J, Ilić J, Nedeljković D. A method for determination of separation properties of membranes. in Journal of Engineering & Processing Management. 2015;7(1):45-54.
doi:10.7251/JEPMEN1507045G .

Grujić, Aleksandar, Stijepović, Mirko, Stajić-Trošić, Jasna, Ilić, J., Nedeljković, Dragutin, "A method for determination of separation properties of membranes" in Journal of Engineering & Processing Management, 7, no. 1 (2015):45-54,
https://doi.org/10.7251/JEPMEN1507045G . .

TY  - JOUR
AU  - Stajić-Trošić, Jasna
AU  - Grujić, Aleksandar
AU  - Stijepović, Mirko Z.
AU  - Nedeljković, Dragutin
AU  - Stajčić, Aleksandar
AU  - Žak, Tomas
PY  - 2014
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1476
AB  - Polymer bonded magnets are contemporary materials with a very large range of applications. The objective of this study is to assess how different content of Nd-Fe-B and/or barium ferrite particles affect on magnetic and morphological properties of bonded composite materials. Interactions between employed magnetic powders and interactions between magnetic powders and polymer binder are considered. For examination of the magnetic behavior Vibrating Sample Magnetometer (VSM) is used. Different shape and size of obtained hysteresis loops are used for comparison and prediction of polymer bonded materials properties.
AB  - Polimerom vezani magneti predstavljaju savremene materijale sa veoma širokim spektrom primene. Cilj ovog rada je da se analizira i prikaže kako različiti udeli čestica Nd-Fe-B i/ili barijum ferita utiču na magnetna i morfološka svojstva bonded kompozitnih materijala. Razmatrane su interakcije između primenjenih magnetnih prahova različitog tipa i interakcije između magnetnih prahova i polimerne matrice. Za merenje magnetnih svojstava kompozita korišćen je vibracioni magnetometar (VSM). Različiti oblici i veličine dobijenih histerezisnih petlji su poređeni i analizirani u cilju predviđanja magnetnog ponašanja kompozita.
PB  - Belgrade, Serbia : Engineering Society for Corrosion
T2  - Zaštita materijala
T1  - Magnetic behaviour of hybrid magnetic composite materials
T1  - Magnetno ponašanje hibridnih magnetnih kompozitnih materijala
VL  - 55
IS  - 2
SP  - 170
EP  - 172
DO  - 10.5937/ZasMat1402170S
ER  - 

@article{
author = "Stajić-Trošić, Jasna and Grujić, Aleksandar and Stijepović, Mirko Z. and Nedeljković, Dragutin and Stajčić, Aleksandar and Žak, Tomas",
year = "2014",
abstract = "Polymer bonded magnets are contemporary materials with a very large range of applications. The objective of this study is to assess how different content of Nd-Fe-B and/or barium ferrite particles affect on magnetic and morphological properties of bonded composite materials. Interactions between employed magnetic powders and interactions between magnetic powders and polymer binder are considered. For examination of the magnetic behavior Vibrating Sample Magnetometer (VSM) is used. Different shape and size of obtained hysteresis loops are used for comparison and prediction of polymer bonded materials properties., Polimerom vezani magneti predstavljaju savremene materijale sa veoma širokim spektrom primene. Cilj ovog rada je da se analizira i prikaže kako različiti udeli čestica Nd-Fe-B i/ili barijum ferita utiču na magnetna i morfološka svojstva bonded kompozitnih materijala. Razmatrane su interakcije između primenjenih magnetnih prahova različitog tipa i interakcije između magnetnih prahova i polimerne matrice. Za merenje magnetnih svojstava kompozita korišćen je vibracioni magnetometar (VSM). Različiti oblici i veličine dobijenih histerezisnih petlji su poređeni i analizirani u cilju predviđanja magnetnog ponašanja kompozita.",
publisher = "Belgrade, Serbia : Engineering Society for Corrosion",
journal = "Zaštita materijala",
title = "Magnetic behaviour of hybrid magnetic composite materials, Magnetno ponašanje hibridnih magnetnih kompozitnih materijala",
volume = "55",
number = "2",
pages = "170-172",
doi = "10.5937/ZasMat1402170S"
}

Stajić-Trošić, J., Grujić, A., Stijepović, M. Z., Nedeljković, D., Stajčić, A.,& Žak, T.. (2014). Magnetic behaviour of hybrid magnetic composite materials. in Zaštita materijala
Belgrade, Serbia : Engineering Society for Corrosion., 55(2), 170-172.
https://doi.org/10.5937/ZasMat1402170S

Stajić-Trošić J, Grujić A, Stijepović MZ, Nedeljković D, Stajčić A, Žak T. Magnetic behaviour of hybrid magnetic composite materials. in Zaštita materijala. 2014;55(2):170-172.
doi:10.5937/ZasMat1402170S .

Stajić-Trošić, Jasna, Grujić, Aleksandar, Stijepović, Mirko Z., Nedeljković, Dragutin, Stajčić, Aleksandar, Žak, Tomas, "Magnetic behaviour of hybrid magnetic composite materials" in Zaštita materijala, 55, no. 2 (2014):170-172,
https://doi.org/10.5937/ZasMat1402170S . .

TY  - JOUR
AU  - Stijepović, Mirko Z.
AU  - Papadopoulos, Athanasios I.
AU  - Linke, Patrick
AU  - Grujić, Aleksandar
AU  - Seferlis, Panos
PY  - 2014
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1563
AB  - This work adopts the (ECCs) under bar (exergy composite curves) approach to explore the potential for ORC (organic Rankine cycle) process improvements. The method is used to explore different ORC configurations supported by a mathematical model representing a generic multi-pressure ORC cascade and developed based on the principles of the ECCs method. The model facilitates interconnectivity at different temperature and pressure levels, also considering two types of turbines, namely an expansion and an induction turbine. It is employed to investigate the performance of two major ORC configurations, namely one considering independent pressure loops with an expansion turbine and the other considering pressure loops contacted through induction turbines. These configurations are updated with new features within an iterative procedure supporting the systematic identification of the optimum number of pressure loops together with several operating optimization parameters. The optimization is performed using an inclusive objective function, while the obtained results indicate ORC systems of high performance.
PB  - Oxford : Pergamon-Elsevier Science Ltd
T2  - Energy
T1  - An exergy composite curves approach for the design of optimum multi-pressure organic Rankine cycle processes
VL  - 69
SP  - 285
EP  - 298
DO  - 10.1016/j.energy.2014.03.006
ER  - 

@article{
author = "Stijepović, Mirko Z. and Papadopoulos, Athanasios I. and Linke, Patrick and Grujić, Aleksandar and Seferlis, Panos",
year = "2014",
abstract = "This work adopts the (ECCs) under bar (exergy composite curves) approach to explore the potential for ORC (organic Rankine cycle) process improvements. The method is used to explore different ORC configurations supported by a mathematical model representing a generic multi-pressure ORC cascade and developed based on the principles of the ECCs method. The model facilitates interconnectivity at different temperature and pressure levels, also considering two types of turbines, namely an expansion and an induction turbine. It is employed to investigate the performance of two major ORC configurations, namely one considering independent pressure loops with an expansion turbine and the other considering pressure loops contacted through induction turbines. These configurations are updated with new features within an iterative procedure supporting the systematic identification of the optimum number of pressure loops together with several operating optimization parameters. The optimization is performed using an inclusive objective function, while the obtained results indicate ORC systems of high performance.",
publisher = "Oxford : Pergamon-Elsevier Science Ltd",
journal = "Energy",
title = "An exergy composite curves approach for the design of optimum multi-pressure organic Rankine cycle processes",
volume = "69",
pages = "285-298",
doi = "10.1016/j.energy.2014.03.006"
}

Stijepović, M. Z., Papadopoulos, A. I., Linke, P., Grujić, A.,& Seferlis, P.. (2014). An exergy composite curves approach for the design of optimum multi-pressure organic Rankine cycle processes. in Energy
Oxford : Pergamon-Elsevier Science Ltd., 69, 285-298.
https://doi.org/10.1016/j.energy.2014.03.006

Stijepović MZ, Papadopoulos AI, Linke P, Grujić A, Seferlis P. An exergy composite curves approach for the design of optimum multi-pressure organic Rankine cycle processes. in Energy. 2014;69:285-298.
doi:10.1016/j.energy.2014.03.006 .

Stijepović, Mirko Z., Papadopoulos, Athanasios I., Linke, Patrick, Grujić, Aleksandar, Seferlis, Panos, "An exergy composite curves approach for the design of optimum multi-pressure organic Rankine cycle processes" in Energy, 69 (2014):285-298,
https://doi.org/10.1016/j.energy.2014.03.006 . .

TY  - CHAP
AU  - Stijepović, Mirko Z.
AU  - Papadopoulos, A.I.
AU  - Linke, P.
AU  - Grujić, Aleksandar
AU  - Seferlis, P.
PY  - 2014
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1604
AB  - This work addresses the design of Organic Rankine Cycle (ORC) processes used for power generation from low-grade heat available in site utility systems. The Exergy Composite Curves approach is used within a systemic optimization framework to explore various complex ORC configurations. The method facilitates interconnectivity at several temperature and pressure levels, considering different types and numbers of turbines as design decision parameters simultaneously with other operating ORC features. It is employed to investigate the performance of two generic ORC configurations, namely one considering independent pressure loops with expansion turbines and the other considering pressure loops contacted through induction turbines. To optimize the number of pressure levels, ORC structural configuration, and operating parameters an inclusive objective function is used considering thermodynamic criteria. The application of the method is demonstrated by a case study on waste heat recovery and reuse in a utility plant.
PB  - Elsevier
T2  - Computer Aided Chemical Engineering
T1  - Design of multi-pressure organic rankine cycles for waste heat recovery in site utility systems
VL  - 33
SP  - 109
EP  - 114
DO  - 10.1016/B978-0-444-63456-6.50019-3
ER  - 

@inbook{
author = "Stijepović, Mirko Z. and Papadopoulos, A.I. and Linke, P. and Grujić, Aleksandar and Seferlis, P.",
year = "2014",
abstract = "This work addresses the design of Organic Rankine Cycle (ORC) processes used for power generation from low-grade heat available in site utility systems. The Exergy Composite Curves approach is used within a systemic optimization framework to explore various complex ORC configurations. The method facilitates interconnectivity at several temperature and pressure levels, considering different types and numbers of turbines as design decision parameters simultaneously with other operating ORC features. It is employed to investigate the performance of two generic ORC configurations, namely one considering independent pressure loops with expansion turbines and the other considering pressure loops contacted through induction turbines. To optimize the number of pressure levels, ORC structural configuration, and operating parameters an inclusive objective function is used considering thermodynamic criteria. The application of the method is demonstrated by a case study on waste heat recovery and reuse in a utility plant.",
publisher = "Elsevier",
journal = "Computer Aided Chemical Engineering",
booktitle = "Design of multi-pressure organic rankine cycles for waste heat recovery in site utility systems",
volume = "33",
pages = "109-114",
doi = "10.1016/B978-0-444-63456-6.50019-3"
}

Stijepović, M. Z., Papadopoulos, A.I., Linke, P., Grujić, A.,& Seferlis, P.. (2014). Design of multi-pressure organic rankine cycles for waste heat recovery in site utility systems. in Computer Aided Chemical Engineering
Elsevier., 33, 109-114.
https://doi.org/10.1016/B978-0-444-63456-6.50019-3

Stijepović MZ, Papadopoulos A, Linke P, Grujić A, Seferlis P. Design of multi-pressure organic rankine cycles for waste heat recovery in site utility systems. in Computer Aided Chemical Engineering. 2014;33:109-114.
doi:10.1016/B978-0-444-63456-6.50019-3 .

Stijepović, Mirko Z., Papadopoulos, A.I., Linke, P., Grujić, Aleksandar, Seferlis, P., "Design of multi-pressure organic rankine cycles for waste heat recovery in site utility systems" in Computer Aided Chemical Engineering, 33 (2014):109-114,
https://doi.org/10.1016/B978-0-444-63456-6.50019-3 . .