TY  - CONF
AU  - Karić, Nataša
AU  - Maletić, Marina
AU  - Živojinović, Sara
AU  - Vukčević, Marija
AU  - Milošević, Milena
AU  - Trivunac, Katarina
AU  - Perić Grujić, Aleksandra
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7340
AB  - Fly ash (FA) is an industrial waste material generated during coal combustion in thermalpower plants. In order to reuse this kind of industrial waste, and at the same time to reduce itsquantity, fly ash was used as a cheap material for the preparation of efficient adsorbents for theremoval of selected dyes from water. For that purpose, different modification methods were used toobtain alkali-activated fly ash samples. The success of the modification process and characterizationof the unmodified and modified materials was monitored by Fourier transform infrared spectroscopy,and scanning electron microscopy/energy dispersive spectroscopy. The adsorption properties ofexamined samples were studied through the adsorption of methylene blue, crystal violet, alizarin red,and methyl orange. All samples showed the highest adsorption efficiency for crystal violet removal,while the sample modified with a combination of NaOH, Na2SiO3, and diatomaceous earth(FA/geopolymer) was the most efficient adsorbent for all selected dyes. Therefore, the influence ofinitial pH value and contact time on adsorption was examined for the adsorption of crystal violetonto FA/geopolymer. It was found that alkaline modification improves the adsorption characteristicsof fly ash making it a promising candidate to solve the problem of colored wastewater.
PB  - Belgrade : The Academy of Applied Technical Studies "Belgrade"
C3  - Conference Proceedings / International Scientific and Professional Conference Politehnika 2023, Belgrade, 15th December 2023
T1  - Alkali modification of fly ash for adsorption of selected dyes
SP  - 66
EP  - 70
UR  - https://hdl.handle.net/21.15107/rcub_cer_7340
ER  - 

@conference{
author = "Karić, Nataša and Maletić, Marina and Živojinović, Sara and Vukčević, Marija and Milošević, Milena and Trivunac, Katarina and Perić Grujić, Aleksandra",
year = "2023",
abstract = "Fly ash (FA) is an industrial waste material generated during coal combustion in thermalpower plants. In order to reuse this kind of industrial waste, and at the same time to reduce itsquantity, fly ash was used as a cheap material for the preparation of efficient adsorbents for theremoval of selected dyes from water. For that purpose, different modification methods were used toobtain alkali-activated fly ash samples. The success of the modification process and characterizationof the unmodified and modified materials was monitored by Fourier transform infrared spectroscopy,and scanning electron microscopy/energy dispersive spectroscopy. The adsorption properties ofexamined samples were studied through the adsorption of methylene blue, crystal violet, alizarin red,and methyl orange. All samples showed the highest adsorption efficiency for crystal violet removal,while the sample modified with a combination of NaOH, Na2SiO3, and diatomaceous earth(FA/geopolymer) was the most efficient adsorbent for all selected dyes. Therefore, the influence ofinitial pH value and contact time on adsorption was examined for the adsorption of crystal violetonto FA/geopolymer. It was found that alkaline modification improves the adsorption characteristicsof fly ash making it a promising candidate to solve the problem of colored wastewater.",
publisher = "Belgrade : The Academy of Applied Technical Studies "Belgrade"",
journal = "Conference Proceedings / International Scientific and Professional Conference Politehnika 2023, Belgrade, 15th December 2023",
title = "Alkali modification of fly ash for adsorption of selected dyes",
pages = "66-70",
url = "https://hdl.handle.net/21.15107/rcub_cer_7340"
}

Karić, N., Maletić, M., Živojinović, S., Vukčević, M., Milošević, M., Trivunac, K.,& Perić Grujić, A.. (2023). Alkali modification of fly ash for adsorption of selected dyes. in Conference Proceedings / International Scientific and Professional Conference Politehnika 2023, Belgrade, 15th December 2023
Belgrade : The Academy of Applied Technical Studies "Belgrade"., 66-70.
https://hdl.handle.net/21.15107/rcub_cer_7340

Karić N, Maletić M, Živojinović S, Vukčević M, Milošević M, Trivunac K, Perić Grujić A. Alkali modification of fly ash for adsorption of selected dyes. in Conference Proceedings / International Scientific and Professional Conference Politehnika 2023, Belgrade, 15th December 2023. 2023;:66-70.
https://hdl.handle.net/21.15107/rcub_cer_7340 .

Karić, Nataša, Maletić, Marina, Živojinović, Sara, Vukčević, Marija, Milošević, Milena, Trivunac, Katarina, Perić Grujić, Aleksandra, "Alkali modification of fly ash for adsorption of selected dyes" in Conference Proceedings / International Scientific and Professional Conference Politehnika 2023, Belgrade, 15th December 2023 (2023):66-70,
https://hdl.handle.net/21.15107/rcub_cer_7340 .

TY  - CONF
AU  - Maletić, Marina
AU  - Žižović, Sara
AU  - Vukčević, Marija
AU  - Milošević, Milena
AU  - Karić, Nataša
AU  - Trivunac, Katarina
AU  - Perić-Grujić, Aleksandra
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7337
AB  - U cilju iskorišćenja industrijskog otpada, leteći pepeo je modifikovan radi dobijanjaefikasnih adsorbenata za uklanjanje metilensko plavog iz vode. Leteći pepeo je aktiviran uprisustvu NaOH na 550oC, i modifikovan različitim količinama polietilenimina.Karakterizacija polaznog i modifikovanih uzoraka izvršena je skenirajućom elektronskommikroskopijom i infracrvenom spektroskopijom sa Furijeovom transformacijom. Ispitan jeuticaj vremena kontakta i početne koncentracije adsorbata na adsorpcione kapacitetenemodifikovanog i modifikovanog letećeg pepela. Pokazano je da adsorpcionekarakteristike zavise od količine dodatog polietilenimina, kao i da adsorpcija prati brzinupseudo-drugog reda, a ravnotežni adsorpcioni podaci pokazuju bolje slaganje sa Frojndlihovom izotermom.
AB  - In attempt to reuse industrial waste, fly ash was modified and converted into efficientadsorbent for the removal of methylene blue from water. Fly ash was activated in thepresence of NaOH at 550oC, and modified with different amounts of polyethyleneimine.The raw and modified samples were characterized by scanning electron microscopy andFourier transform infrared spectroscopy. The influence of contact time and initialadsorbate concentration on the adsorption capacity of unmodified and modified fly ash wasalso examined. It has been shown that the adsorption characteristics depend on the amountof polyethyleneimine added, that the adsorption follows a pseudo-second-order rate, andthe equilibrium adsorption data show better agreement with the Freundlich isotherm.
PB  - Beograd : Srpsko hemijsko društvo
C3  - Kratki izvodi radova, knjiga radova - 59. Savetovanje Srpskog hemijskog društva, 1. i 2. jun 2023. godine, Novi Sad / Book of Abstracts, Proceedings - 59th Meeting of the Serbian Chemical Society, June 1-2, 2023, Novi Sad, Serbia
T1  - Alkalno aktivirani leteći pepeo modifikovan polietileniminom kao adsorbent za uklanjanje metilensko plavog iz vode
T1  - Alkali-activated fly ash modified with polyethyleneimine as adsorbent for methylene blue removal from water
SP  - 126
EP  - 126
UR  - https://hdl.handle.net/21.15107/rcub_cer_7337
ER  - 

@conference{
author = "Maletić, Marina and Žižović, Sara and Vukčević, Marija and Milošević, Milena and Karić, Nataša and Trivunac, Katarina and Perić-Grujić, Aleksandra",
year = "2023",
abstract = "U cilju iskorišćenja industrijskog otpada, leteći pepeo je modifikovan radi dobijanjaefikasnih adsorbenata za uklanjanje metilensko plavog iz vode. Leteći pepeo je aktiviran uprisustvu NaOH na 550oC, i modifikovan različitim količinama polietilenimina.Karakterizacija polaznog i modifikovanih uzoraka izvršena je skenirajućom elektronskommikroskopijom i infracrvenom spektroskopijom sa Furijeovom transformacijom. Ispitan jeuticaj vremena kontakta i početne koncentracije adsorbata na adsorpcione kapacitetenemodifikovanog i modifikovanog letećeg pepela. Pokazano je da adsorpcionekarakteristike zavise od količine dodatog polietilenimina, kao i da adsorpcija prati brzinupseudo-drugog reda, a ravnotežni adsorpcioni podaci pokazuju bolje slaganje sa Frojndlihovom izotermom., In attempt to reuse industrial waste, fly ash was modified and converted into efficientadsorbent for the removal of methylene blue from water. Fly ash was activated in thepresence of NaOH at 550oC, and modified with different amounts of polyethyleneimine.The raw and modified samples were characterized by scanning electron microscopy andFourier transform infrared spectroscopy. The influence of contact time and initialadsorbate concentration on the adsorption capacity of unmodified and modified fly ash wasalso examined. It has been shown that the adsorption characteristics depend on the amountof polyethyleneimine added, that the adsorption follows a pseudo-second-order rate, andthe equilibrium adsorption data show better agreement with the Freundlich isotherm.",
publisher = "Beograd : Srpsko hemijsko društvo",
journal = "Kratki izvodi radova, knjiga radova - 59. Savetovanje Srpskog hemijskog društva, 1. i 2. jun 2023. godine, Novi Sad / Book of Abstracts, Proceedings - 59th Meeting of the Serbian Chemical Society, June 1-2, 2023, Novi Sad, Serbia",
title = "Alkalno aktivirani leteći pepeo modifikovan polietileniminom kao adsorbent za uklanjanje metilensko plavog iz vode, Alkali-activated fly ash modified with polyethyleneimine as adsorbent for methylene blue removal from water",
pages = "126-126",
url = "https://hdl.handle.net/21.15107/rcub_cer_7337"
}

Maletić, M., Žižović, S., Vukčević, M., Milošević, M., Karić, N., Trivunac, K.,& Perić-Grujić, A.. (2023). Alkalno aktivirani leteći pepeo modifikovan polietileniminom kao adsorbent za uklanjanje metilensko plavog iz vode. in Kratki izvodi radova, knjiga radova - 59. Savetovanje Srpskog hemijskog društva, 1. i 2. jun 2023. godine, Novi Sad / Book of Abstracts, Proceedings - 59th Meeting of the Serbian Chemical Society, June 1-2, 2023, Novi Sad, Serbia
Beograd : Srpsko hemijsko društvo., 126-126.
https://hdl.handle.net/21.15107/rcub_cer_7337

Maletić M, Žižović S, Vukčević M, Milošević M, Karić N, Trivunac K, Perić-Grujić A. Alkalno aktivirani leteći pepeo modifikovan polietileniminom kao adsorbent za uklanjanje metilensko plavog iz vode. in Kratki izvodi radova, knjiga radova - 59. Savetovanje Srpskog hemijskog društva, 1. i 2. jun 2023. godine, Novi Sad / Book of Abstracts, Proceedings - 59th Meeting of the Serbian Chemical Society, June 1-2, 2023, Novi Sad, Serbia. 2023;:126-126.
https://hdl.handle.net/21.15107/rcub_cer_7337 .

Maletić, Marina, Žižović, Sara, Vukčević, Marija, Milošević, Milena, Karić, Nataša, Trivunac, Katarina, Perić-Grujić, Aleksandra, "Alkalno aktivirani leteći pepeo modifikovan polietileniminom kao adsorbent za uklanjanje metilensko plavog iz vode" in Kratki izvodi radova, knjiga radova - 59. Savetovanje Srpskog hemijskog društva, 1. i 2. jun 2023. godine, Novi Sad / Book of Abstracts, Proceedings - 59th Meeting of the Serbian Chemical Society, June 1-2, 2023, Novi Sad, Serbia (2023):126-126,
https://hdl.handle.net/21.15107/rcub_cer_7337 .

TY  - CONF
AU  - Marković, Marija
AU  - Mudrinić, Tihana
AU  - Jović-Jovičić, Nataša
AU  - Ajduković, Marija
AU  - Perić Grujić, Aleksandra
AU  - Milutinović Nikolić, Aleksandra
AU  - Marinović, Sanja
PY  - 2019
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6271
AB  - Standard clay rich in montmorillonite was modified by means of Na-exchange process and used
in pillaring process with Al(NO3)3 in the presence of NaOH. Obtained pillared clay was impregnated with
Co2+ using incipient wetness impregnation method, calcined (CoAP) and applied as a catalyst in catalytic
oxidation of tartrazine in the presence of Oxone® (peroxymonosulfate). The catalyst was characterized by
chemical, XRD and textural analysis. The morphology was monitored by SEM coupled with EDS. The
influence of pH of the initial dye solution on decolorization process was investigated in the pH range from
2 to 11 at 50 °C. Decolorization was monitored at wavelength λ=426 nm, using UV-Vis spectroscopy. Above
tartrazine pKa (9.4) this peak was shifted to 399 nm. Besides decolorization of tartrazine solution also the
formation, followed by degradation of tartrazine oxidation products, was studied. At pH>10 under the same
reaction conditions, the process was almost negligible. On the other hand at 6<pH<8 the reaction was the
fastest, while somewhat slower for 2<pH<4. CoAP was found to be efficient catalyst in Oxone® induced
catalytic degradation of both tartrazine and products of its degradation in the pH range below tartrazine
pKa.
PB  - Serbian Ceramic Society
C3  - Program and the Book of abstracts - Serbian Ceramic Society Conference, Advanced Ceramics  and Application VIII: New Frontiers in Multifunctional Material Science and Processing, Serbia,  23-25. September 2019, Belgrade
T1  - The effect of the initial pH on decolorization and degradation of tartrazine in the reaction with Oxone®, using Co(II) impregnated aluminum-pillared montmorillonite as a catalyst
SP  - 64
EP  - 64
UR  - https://hdl.handle.net/21.15107/rcub_cer_6271
ER  - 

@conference{
author = "Marković, Marija and Mudrinić, Tihana and Jović-Jovičić, Nataša and Ajduković, Marija and Perić Grujić, Aleksandra and Milutinović Nikolić, Aleksandra and Marinović, Sanja",
year = "2019",
abstract = "Standard clay rich in montmorillonite was modified by means of Na-exchange process and used
in pillaring process with Al(NO3)3 in the presence of NaOH. Obtained pillared clay was impregnated with
Co2+ using incipient wetness impregnation method, calcined (CoAP) and applied as a catalyst in catalytic
oxidation of tartrazine in the presence of Oxone® (peroxymonosulfate). The catalyst was characterized by
chemical, XRD and textural analysis. The morphology was monitored by SEM coupled with EDS. The
influence of pH of the initial dye solution on decolorization process was investigated in the pH range from
2 to 11 at 50 °C. Decolorization was monitored at wavelength λ=426 nm, using UV-Vis spectroscopy. Above
tartrazine pKa (9.4) this peak was shifted to 399 nm. Besides decolorization of tartrazine solution also the
formation, followed by degradation of tartrazine oxidation products, was studied. At pH>10 under the same
reaction conditions, the process was almost negligible. On the other hand at 6<pH<8 the reaction was the
fastest, while somewhat slower for 2<pH<4. CoAP was found to be efficient catalyst in Oxone® induced
catalytic degradation of both tartrazine and products of its degradation in the pH range below tartrazine
pKa.",
publisher = "Serbian Ceramic Society",
journal = "Program and the Book of abstracts - Serbian Ceramic Society Conference, Advanced Ceramics  and Application VIII: New Frontiers in Multifunctional Material Science and Processing, Serbia,  23-25. September 2019, Belgrade",
title = "The effect of the initial pH on decolorization and degradation of tartrazine in the reaction with Oxone®, using Co(II) impregnated aluminum-pillared montmorillonite as a catalyst",
pages = "64-64",
url = "https://hdl.handle.net/21.15107/rcub_cer_6271"
}

Marković, M., Mudrinić, T., Jović-Jovičić, N., Ajduković, M., Perić Grujić, A., Milutinović Nikolić, A.,& Marinović, S.. (2019). The effect of the initial pH on decolorization and degradation of tartrazine in the reaction with Oxone®, using Co(II) impregnated aluminum-pillared montmorillonite as a catalyst. in Program and the Book of abstracts - Serbian Ceramic Society Conference, Advanced Ceramics  and Application VIII: New Frontiers in Multifunctional Material Science and Processing, Serbia,  23-25. September 2019, Belgrade
Serbian Ceramic Society., 64-64.
https://hdl.handle.net/21.15107/rcub_cer_6271

Marković M, Mudrinić T, Jović-Jovičić N, Ajduković M, Perić Grujić A, Milutinović Nikolić A, Marinović S. The effect of the initial pH on decolorization and degradation of tartrazine in the reaction with Oxone®, using Co(II) impregnated aluminum-pillared montmorillonite as a catalyst. in Program and the Book of abstracts - Serbian Ceramic Society Conference, Advanced Ceramics  and Application VIII: New Frontiers in Multifunctional Material Science and Processing, Serbia,  23-25. September 2019, Belgrade. 2019;:64-64.
https://hdl.handle.net/21.15107/rcub_cer_6271 .

Marković, Marija, Mudrinić, Tihana, Jović-Jovičić, Nataša, Ajduković, Marija, Perić Grujić, Aleksandra, Milutinović Nikolić, Aleksandra, Marinović, Sanja, "The effect of the initial pH on decolorization and degradation of tartrazine in the reaction with Oxone®, using Co(II) impregnated aluminum-pillared montmorillonite as a catalyst" in Program and the Book of abstracts - Serbian Ceramic Society Conference, Advanced Ceramics  and Application VIII: New Frontiers in Multifunctional Material Science and Processing, Serbia,  23-25. September 2019, Belgrade (2019):64-64,
https://hdl.handle.net/21.15107/rcub_cer_6271 .

TY  - JOUR
AU  - Đurkić, Tatjana
AU  - Perić-Grujić, Aleksandra A.
AU  - Laušević, Mila D.
AU  - Dekanski, Aleksandar
AU  - Nešković, Olivera M.
AU  - Veljković, Miomir V.
AU  - Laušević, Zoran
PY  - 1997
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4194
AB  - The effects of boron and phosphorus incorporation in phenolic resin precursor on the surface properties of glassy carbon (GC) have been studied. Characterization of the surface properties using X-ray photoelectron spectroscopy and mass spectrometry analysis of desorption products showed that boron and phosphorus doped GC contained more carbon-oxygen complexes on the surface than undoped GC. The thermal decomposition of the surface oxide species, resulting in desorption of CO and CO2 as major gas products, showed that the presence of heteroatoms affects the nature of the surface oxide species and contributes to their increased stability. The presence of stable surface oxide species promotes the increased oxidation resistance of doped GC samples.
PB  - Elsevier
T2  - Carbon
T1  - Boron and phosphorus doped glassy carbon: I. Surface properties
VL  - 35
IS  - 10-11
SP  - 1567
EP  - 1572
DO  - 10.1016/S0008-6223(97)00113-9
ER  - 

@article{
author = "Đurkić, Tatjana and Perić-Grujić, Aleksandra A. and Laušević, Mila D. and Dekanski, Aleksandar and Nešković, Olivera M. and Veljković, Miomir V. and Laušević, Zoran",
year = "1997",
abstract = "The effects of boron and phosphorus incorporation in phenolic resin precursor on the surface properties of glassy carbon (GC) have been studied. Characterization of the surface properties using X-ray photoelectron spectroscopy and mass spectrometry analysis of desorption products showed that boron and phosphorus doped GC contained more carbon-oxygen complexes on the surface than undoped GC. The thermal decomposition of the surface oxide species, resulting in desorption of CO and CO2 as major gas products, showed that the presence of heteroatoms affects the nature of the surface oxide species and contributes to their increased stability. The presence of stable surface oxide species promotes the increased oxidation resistance of doped GC samples.",
publisher = "Elsevier",
journal = "Carbon",
title = "Boron and phosphorus doped glassy carbon: I. Surface properties",
volume = "35",
number = "10-11",
pages = "1567-1572",
doi = "10.1016/S0008-6223(97)00113-9"
}

Đurkić, T., Perić-Grujić, A. A., Laušević, M. D., Dekanski, A., Nešković, O. M., Veljković, M. V.,& Laušević, Z.. (1997). Boron and phosphorus doped glassy carbon: I. Surface properties. in Carbon
Elsevier., 35(10-11), 1567-1572.
https://doi.org/10.1016/S0008-6223(97)00113-9

Đurkić T, Perić-Grujić AA, Laušević MD, Dekanski A, Nešković OM, Veljković MV, Laušević Z. Boron and phosphorus doped glassy carbon: I. Surface properties. in Carbon. 1997;35(10-11):1567-1572.
doi:10.1016/S0008-6223(97)00113-9 .

Đurkić, Tatjana, Perić-Grujić, Aleksandra A., Laušević, Mila D., Dekanski, Aleksandar, Nešković, Olivera M., Veljković, Miomir V., Laušević, Zoran, "Boron and phosphorus doped glassy carbon: I. Surface properties" in Carbon, 35, no. 10-11 (1997):1567-1572,
https://doi.org/10.1016/S0008-6223(97)00113-9 . .