TY  - JOUR
AU  - Lazić, Vesna
AU  - Smiciklas, Ivana
AU  - Markovic, Jelena
AU  - Lončarević, Davor
AU  - Dostanić, Jasmina
AU  - Ahrenkiel, Scott Phillip
AU  - Nedeljković, Jovan M.
PY  - 2018
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2455
AB  - Antimicrobial performance of silver nanoparticles supported by functionalized hydroxyapatite with 5-aminosalycile acid was tested against Gram-negative bacteria E. coli, Gram-positive bacteria S. aureus and yeast C. albicans. Thorough characterization of materials (electron microscopy, nitrogen adsorption desorption isotherms, diffuse reflectance spectroscopy) followed each step during the course of nanocomposite preparation. Synthesized powder consists of rod-like hydroxyapatite particles (40-60 x 10-20 nm, length x diameter) decorated with nano-sized spherical silver particles whose content in nanocomposite was found to be 1.9 wt.-%. Concentration- and time-dependent bacterial reduction data indicated that use of silver nanoparticles even at concentration as low as 1 mu g mL(-1) lead to complete reduction of both bacteria (E. coli and S. aureus). On the other hand, non-toxic behavior of nanocomposite in broad concentration range (0.05-2.0 mg mL(-1)) was found towards C albicans. Successful inactivation of E. coli and S. aureus in five repeated cycles proved that synthesized nanocomposite can perform under long-run working conditions.
PB  - Oxford : Pergamon-Elsevier Science Ltd
T2  - Vacuum
T1  - Antibacterial ability of supported silver nanoparticles by functionalized hydroxyapatite with 5-aminosalicylic acid
VL  - 148
SP  - 62
EP  - 68
DO  - 10.1016/j.vacuum.2017.10.039
ER  - 

@article{
author = "Lazić, Vesna and Smiciklas, Ivana and Markovic, Jelena and Lončarević, Davor and Dostanić, Jasmina and Ahrenkiel, Scott Phillip and Nedeljković, Jovan M.",
year = "2018",
abstract = "Antimicrobial performance of silver nanoparticles supported by functionalized hydroxyapatite with 5-aminosalycile acid was tested against Gram-negative bacteria E. coli, Gram-positive bacteria S. aureus and yeast C. albicans. Thorough characterization of materials (electron microscopy, nitrogen adsorption desorption isotherms, diffuse reflectance spectroscopy) followed each step during the course of nanocomposite preparation. Synthesized powder consists of rod-like hydroxyapatite particles (40-60 x 10-20 nm, length x diameter) decorated with nano-sized spherical silver particles whose content in nanocomposite was found to be 1.9 wt.-%. Concentration- and time-dependent bacterial reduction data indicated that use of silver nanoparticles even at concentration as low as 1 mu g mL(-1) lead to complete reduction of both bacteria (E. coli and S. aureus). On the other hand, non-toxic behavior of nanocomposite in broad concentration range (0.05-2.0 mg mL(-1)) was found towards C albicans. Successful inactivation of E. coli and S. aureus in five repeated cycles proved that synthesized nanocomposite can perform under long-run working conditions.",
publisher = "Oxford : Pergamon-Elsevier Science Ltd",
journal = "Vacuum",
title = "Antibacterial ability of supported silver nanoparticles by functionalized hydroxyapatite with 5-aminosalicylic acid",
volume = "148",
pages = "62-68",
doi = "10.1016/j.vacuum.2017.10.039"
}

Lazić, V., Smiciklas, I., Markovic, J., Lončarević, D., Dostanić, J., Ahrenkiel, S. P.,& Nedeljković, J. M.. (2018). Antibacterial ability of supported silver nanoparticles by functionalized hydroxyapatite with 5-aminosalicylic acid. in Vacuum
Oxford : Pergamon-Elsevier Science Ltd., 148, 62-68.
https://doi.org/10.1016/j.vacuum.2017.10.039

Lazić V, Smiciklas I, Markovic J, Lončarević D, Dostanić J, Ahrenkiel SP, Nedeljković JM. Antibacterial ability of supported silver nanoparticles by functionalized hydroxyapatite with 5-aminosalicylic acid. in Vacuum. 2018;148:62-68.
doi:10.1016/j.vacuum.2017.10.039 .

Lazić, Vesna, Smiciklas, Ivana, Markovic, Jelena, Lončarević, Davor, Dostanić, Jasmina, Ahrenkiel, Scott Phillip, Nedeljković, Jovan M., "Antibacterial ability of supported silver nanoparticles by functionalized hydroxyapatite with 5-aminosalicylic acid" in Vacuum, 148 (2018):62-68,
https://doi.org/10.1016/j.vacuum.2017.10.039 . .

TY  - JOUR
AU  - Sljivic-Ivanovic, Marija Z
AU  - Smiciklas, Ivana D
AU  - Dimović, Slavko
AU  - Jovic, Mihajlo D
AU  - Dojčinović, Biljana
PY  - 2015
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1823
AB  - The problem of simultaneous removal of Co2+, Sr2+, and Cs+ ions from aqueous solutions was addressed using oxide, phosphate, and aluminosilicate materials from economical and abundant sources. Competition between cations was analyzed by the following approaches: (i) the addition of each sorbent separately to variously concentrated cation mixtures (using simplex lattice experimental design methodology), (ii) the application of mixture sorbents (using extreme vertices:experimental design), and consecutive addition of sorbents in varying order. Investigated materials exhibited different selectivity for Co2+ Sr2+, and CS+ in the mixture; thus combination of materials in one-step sorption, or successive addition of sorbents in a multistep process, lead to better removal efficiency. Regression equations obtained by statistical analysis satisfactorily predicted sorbed amounts of cations as a function of both the composition of mixed waste and the composition of mixed sorbent. Mixture designs should be considered as useful tools for getting better insight into the complex sorption processes.
PB  - American Chemical Society (ACS)
T2  - Industrial and Engineering Chemistry Research
T1  - Study of Simultaneous Radionuclide Sorption by Mixture Design Methodology
VL  - 54
IS  - 44
SP  - 11212
EP  - 11221
DO  - 10.1021/acs.iecr.5b03448
ER  - 

@article{
author = "Sljivic-Ivanovic, Marija Z and Smiciklas, Ivana D and Dimović, Slavko and Jovic, Mihajlo D and Dojčinović, Biljana",
year = "2015",
abstract = "The problem of simultaneous removal of Co2+, Sr2+, and Cs+ ions from aqueous solutions was addressed using oxide, phosphate, and aluminosilicate materials from economical and abundant sources. Competition between cations was analyzed by the following approaches: (i) the addition of each sorbent separately to variously concentrated cation mixtures (using simplex lattice experimental design methodology), (ii) the application of mixture sorbents (using extreme vertices:experimental design), and consecutive addition of sorbents in varying order. Investigated materials exhibited different selectivity for Co2+ Sr2+, and CS+ in the mixture; thus combination of materials in one-step sorption, or successive addition of sorbents in a multistep process, lead to better removal efficiency. Regression equations obtained by statistical analysis satisfactorily predicted sorbed amounts of cations as a function of both the composition of mixed waste and the composition of mixed sorbent. Mixture designs should be considered as useful tools for getting better insight into the complex sorption processes.",
publisher = "American Chemical Society (ACS)",
journal = "Industrial and Engineering Chemistry Research",
title = "Study of Simultaneous Radionuclide Sorption by Mixture Design Methodology",
volume = "54",
number = "44",
pages = "11212-11221",
doi = "10.1021/acs.iecr.5b03448"
}

Sljivic-Ivanovic, M. Z., Smiciklas, I. D., Dimović, S., Jovic, M. D.,& Dojčinović, B.. (2015). Study of Simultaneous Radionuclide Sorption by Mixture Design Methodology. in Industrial and Engineering Chemistry Research
American Chemical Society (ACS)., 54(44), 11212-11221.
https://doi.org/10.1021/acs.iecr.5b03448

Sljivic-Ivanovic MZ, Smiciklas ID, Dimović S, Jovic MD, Dojčinović B. Study of Simultaneous Radionuclide Sorption by Mixture Design Methodology. in Industrial and Engineering Chemistry Research. 2015;54(44):11212-11221.
doi:10.1021/acs.iecr.5b03448 .

Sljivic-Ivanovic, Marija Z, Smiciklas, Ivana D, Dimović, Slavko, Jovic, Mihajlo D, Dojčinović, Biljana, "Study of Simultaneous Radionuclide Sorption by Mixture Design Methodology" in Industrial and Engineering Chemistry Research, 54, no. 44 (2015):11212-11221,
https://doi.org/10.1021/acs.iecr.5b03448 . .

TY  - JOUR
AU  - Sljivic-Ivanovic, M
AU  - Smiciklas, I
AU  - Milenkovic, A
AU  - Dojčinović, Biljana
AU  - Babić, Biljana M.
AU  - Mitrić, Miodrag
PY  - 2015
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1741
AB  - Animal bones have been studied as a resource of low-crystalline apatite for immobilization of toxic heavy metals. Chemical and thermal treatments can be applied for selective removal of bone organic constituents. In this study, the impact of different treatment factors was determined by experimental design methodology, and comparison of the estimated effects was performed in order to optimize the treatment conditions. Fractional factorial design with five variables at two levels was applied for factors screening. The type of chemical reagent (H2O2 or NaOH), its concentration (0.1 or 2 mol/L), reaction temperature (20 or 60 degrees C), contact time (1 or 3 h) and sample annealing (without or at 400 degrees C) were considered as process variables. Structural properties of bone sorbents, loss of ignition, point of zero charge, surface functional groups, specific surface area, chemical composition, and Cd2+ sorption efficiency, were selected as system responses. Samples significantly differed in respect to the organic phase content and composition, thus mechanisms of Cd2+ sorption were complex. Statistical analysis has revealed that, between all studied factors, temperature treatment was the most important for sorbents increased specific surface area, porosity and cation sorption. Furthermore, NaOH was more effective than H2O2, while the effects produced by variation of other factors were less pronounced. The highest proportion of bio-apatite with desired low crystallinity and high specific surface area was achieved by synergetic effects of chemical treatment with NaOH and thermal treatment at 400 degrees C.
PB  - Springer, New York
T2  - Journal of Materials Science
T1  - Evaluation of the effects of treatment factors on the properties of bio-apatite materials
VL  - 50
IS  - 1
SP  - 354
EP  - 365
DO  - 10.1007/s10853-014-8594-4
ER  - 

@article{
author = "Sljivic-Ivanovic, M and Smiciklas, I and Milenkovic, A and Dojčinović, Biljana and Babić, Biljana M. and Mitrić, Miodrag",
year = "2015",
abstract = "Animal bones have been studied as a resource of low-crystalline apatite for immobilization of toxic heavy metals. Chemical and thermal treatments can be applied for selective removal of bone organic constituents. In this study, the impact of different treatment factors was determined by experimental design methodology, and comparison of the estimated effects was performed in order to optimize the treatment conditions. Fractional factorial design with five variables at two levels was applied for factors screening. The type of chemical reagent (H2O2 or NaOH), its concentration (0.1 or 2 mol/L), reaction temperature (20 or 60 degrees C), contact time (1 or 3 h) and sample annealing (without or at 400 degrees C) were considered as process variables. Structural properties of bone sorbents, loss of ignition, point of zero charge, surface functional groups, specific surface area, chemical composition, and Cd2+ sorption efficiency, were selected as system responses. Samples significantly differed in respect to the organic phase content and composition, thus mechanisms of Cd2+ sorption were complex. Statistical analysis has revealed that, between all studied factors, temperature treatment was the most important for sorbents increased specific surface area, porosity and cation sorption. Furthermore, NaOH was more effective than H2O2, while the effects produced by variation of other factors were less pronounced. The highest proportion of bio-apatite with desired low crystallinity and high specific surface area was achieved by synergetic effects of chemical treatment with NaOH and thermal treatment at 400 degrees C.",
publisher = "Springer, New York",
journal = "Journal of Materials Science",
title = "Evaluation of the effects of treatment factors on the properties of bio-apatite materials",
volume = "50",
number = "1",
pages = "354-365",
doi = "10.1007/s10853-014-8594-4"
}

Sljivic-Ivanovic, M., Smiciklas, I., Milenkovic, A., Dojčinović, B., Babić, B. M.,& Mitrić, M.. (2015). Evaluation of the effects of treatment factors on the properties of bio-apatite materials. in Journal of Materials Science
Springer, New York., 50(1), 354-365.
https://doi.org/10.1007/s10853-014-8594-4

Sljivic-Ivanovic M, Smiciklas I, Milenkovic A, Dojčinović B, Babić BM, Mitrić M. Evaluation of the effects of treatment factors on the properties of bio-apatite materials. in Journal of Materials Science. 2015;50(1):354-365.
doi:10.1007/s10853-014-8594-4 .

Sljivic-Ivanovic, M, Smiciklas, I, Milenkovic, A, Dojčinović, Biljana, Babić, Biljana M., Mitrić, Miodrag, "Evaluation of the effects of treatment factors on the properties of bio-apatite materials" in Journal of Materials Science, 50, no. 1 (2015):354-365,
https://doi.org/10.1007/s10853-014-8594-4 . .

TY  - JOUR
AU  - Jankovic, Bojan
AU  - Smiciklas, Ivana
AU  - Stajić-Trošić, Jasna
AU  - Antonovic, Dusan
PY  - 2013
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1178
AB  - Thermal characterization and kinetic analysis of non-isothermal decomposition process of Bauxite red mud were carried out using thermogravimetry (TG), derivative thermogravimetry (DTG), differential scanning calorimetry (DSC), differential thermal analysis (DTA) and Fourier transform infrared spectroscopy (FTIR). It was found that the investigated decomposition was a complex heterogeneous process, which included two main decomposition stages and one sub-stage. The overall decomposition process consisted of the series of parallel and competitive reactions, which originated from the decomposition of various chemical species and solid-state transformations. This behavior was confirmed by the appearance of different forms of density distribution functions of apparent activation energy values. Furthermore, the conversion range of 0.10  LT = alpha  LT = 0.30, with a constant value of the apparent activation energy (146.4 kJ mol(-1)) for the second stage of the overall process, belongs to calcite decomposition, which takes place through a two-dimensional diffusion mechanism.
PB  - Elsevier
T2  - International Journal of Mineral Processing
T1  - Thermal characterization and kinetic analysis of non-isothermal decomposition process of Bauxite red mud. Estimation of density distribution function of the apparent activation energy
VL  - 123
SP  - 46
EP  - 59
DO  - 10.1016/j.minpro.2013.05.003
ER  - 

@article{
author = "Jankovic, Bojan and Smiciklas, Ivana and Stajić-Trošić, Jasna and Antonovic, Dusan",
year = "2013",
abstract = "Thermal characterization and kinetic analysis of non-isothermal decomposition process of Bauxite red mud were carried out using thermogravimetry (TG), derivative thermogravimetry (DTG), differential scanning calorimetry (DSC), differential thermal analysis (DTA) and Fourier transform infrared spectroscopy (FTIR). It was found that the investigated decomposition was a complex heterogeneous process, which included two main decomposition stages and one sub-stage. The overall decomposition process consisted of the series of parallel and competitive reactions, which originated from the decomposition of various chemical species and solid-state transformations. This behavior was confirmed by the appearance of different forms of density distribution functions of apparent activation energy values. Furthermore, the conversion range of 0.10  LT = alpha  LT = 0.30, with a constant value of the apparent activation energy (146.4 kJ mol(-1)) for the second stage of the overall process, belongs to calcite decomposition, which takes place through a two-dimensional diffusion mechanism.",
publisher = "Elsevier",
journal = "International Journal of Mineral Processing",
title = "Thermal characterization and kinetic analysis of non-isothermal decomposition process of Bauxite red mud. Estimation of density distribution function of the apparent activation energy",
volume = "123",
pages = "46-59",
doi = "10.1016/j.minpro.2013.05.003"
}

Jankovic, B., Smiciklas, I., Stajić-Trošić, J.,& Antonovic, D.. (2013). Thermal characterization and kinetic analysis of non-isothermal decomposition process of Bauxite red mud. Estimation of density distribution function of the apparent activation energy. in International Journal of Mineral Processing
Elsevier., 123, 46-59.
https://doi.org/10.1016/j.minpro.2013.05.003

Jankovic B, Smiciklas I, Stajić-Trošić J, Antonovic D. Thermal characterization and kinetic analysis of non-isothermal decomposition process of Bauxite red mud. Estimation of density distribution function of the apparent activation energy. in International Journal of Mineral Processing. 2013;123:46-59.
doi:10.1016/j.minpro.2013.05.003 .

Jankovic, Bojan, Smiciklas, Ivana, Stajić-Trošić, Jasna, Antonovic, Dusan, "Thermal characterization and kinetic analysis of non-isothermal decomposition process of Bauxite red mud. Estimation of density distribution function of the apparent activation energy" in International Journal of Mineral Processing, 123 (2013):46-59,
https://doi.org/10.1016/j.minpro.2013.05.003 . .

TY  - JOUR
AU  - Dimović, Slavko
AU  - Smiciklas, Ivana
AU  - Sljivic-Ivanovic, Marija
AU  - Dojčinović, Biljana
PY  - 2013
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1317
AB  - The influence of bone sorbent addition onto distribution of Sr-90 in artificially contaminated soil was preliminary studied to assess the possibility of biogenic apatite utilization for reduction of Sr-90 mobility and availability. Simultaneously, the disruption of soil micro- (Cd, Zn, Co, Cu, Cr, and Ni,) and macroelements (Al, Fe, Mn, K, Mg, and Ca) upon Sr contamination and sorbent addition was monitored. The model soil was contaminated by inactive Sr, in the form of Sr(NO3)(2) solution. As a soil additive, sorbent obtained by annealing bovine bones at 400 A degrees C (B400) was applied. Both the uncontaminated and Sr-contaminated soils were mixed with 1, 3, 5, and 10 % of sorbent, suspended in distilled water (initial pH 5; solid/solution ratio, 1:2), and equilibrated for 15 days on a rotary shaker. Solid residues were subjected to modified Tessier five-step sequential extraction analysis, and the amounts of chosen metals in each fraction were determined by inductively coupled plasma-optical emission spectroscopy. In the original soil, Sr was mainly found in exchangeable (61 %) and carbonate phase (16 %), whereas after contamination, the content of Sr in exchangeable phase raised to 94 %. With the addition of B400, the decrease in Sr amounts in exchangeable fraction was detected, whereas increase occurred mainly in operationally defined carbonate phase and in the residual. High level of Sr contamination caused the increase in Zn, Ni, Co, Cu, Cd, and Mn and decrease in Ca content in exchangeable phase. Sorbent addition resulted in a migration of these cations to less soluble fractions. This effect was observed even for major soil elements such as Fe, Al, and Mn, regardless of the excessive amounts of Sr in the soil. Mixing the soil with B400 resulted in reduced Sr mobility and bioavailability. B400 acted as a stabilizing agent for heavy metals, as well. Apatite distinguished selectivity towards heavy metals may interfere with the Sr immobilization and disrupt original cation distribution. Further studies should include more realistic (lower) Sr concentrations in the soil, different soil types, pH, and longer incubation times.
PB  - Springer Heidelberg, Heidelberg
T2  - Journal of Soils and Sediments
T1  - Speciation of Sr-90 and other metal cations in artificially contaminated soils: the influence of bone sorbent addition
VL  - 13
IS  - 2
SP  - 383
EP  - 393
DO  - 10.1007/s11368-012-0633-7
ER  - 

@article{
author = "Dimović, Slavko and Smiciklas, Ivana and Sljivic-Ivanovic, Marija and Dojčinović, Biljana",
year = "2013",
abstract = "The influence of bone sorbent addition onto distribution of Sr-90 in artificially contaminated soil was preliminary studied to assess the possibility of biogenic apatite utilization for reduction of Sr-90 mobility and availability. Simultaneously, the disruption of soil micro- (Cd, Zn, Co, Cu, Cr, and Ni,) and macroelements (Al, Fe, Mn, K, Mg, and Ca) upon Sr contamination and sorbent addition was monitored. The model soil was contaminated by inactive Sr, in the form of Sr(NO3)(2) solution. As a soil additive, sorbent obtained by annealing bovine bones at 400 A degrees C (B400) was applied. Both the uncontaminated and Sr-contaminated soils were mixed with 1, 3, 5, and 10 % of sorbent, suspended in distilled water (initial pH 5; solid/solution ratio, 1:2), and equilibrated for 15 days on a rotary shaker. Solid residues were subjected to modified Tessier five-step sequential extraction analysis, and the amounts of chosen metals in each fraction were determined by inductively coupled plasma-optical emission spectroscopy. In the original soil, Sr was mainly found in exchangeable (61 %) and carbonate phase (16 %), whereas after contamination, the content of Sr in exchangeable phase raised to 94 %. With the addition of B400, the decrease in Sr amounts in exchangeable fraction was detected, whereas increase occurred mainly in operationally defined carbonate phase and in the residual. High level of Sr contamination caused the increase in Zn, Ni, Co, Cu, Cd, and Mn and decrease in Ca content in exchangeable phase. Sorbent addition resulted in a migration of these cations to less soluble fractions. This effect was observed even for major soil elements such as Fe, Al, and Mn, regardless of the excessive amounts of Sr in the soil. Mixing the soil with B400 resulted in reduced Sr mobility and bioavailability. B400 acted as a stabilizing agent for heavy metals, as well. Apatite distinguished selectivity towards heavy metals may interfere with the Sr immobilization and disrupt original cation distribution. Further studies should include more realistic (lower) Sr concentrations in the soil, different soil types, pH, and longer incubation times.",
publisher = "Springer Heidelberg, Heidelberg",
journal = "Journal of Soils and Sediments",
title = "Speciation of Sr-90 and other metal cations in artificially contaminated soils: the influence of bone sorbent addition",
volume = "13",
number = "2",
pages = "383-393",
doi = "10.1007/s11368-012-0633-7"
}

Dimović, S., Smiciklas, I., Sljivic-Ivanovic, M.,& Dojčinović, B.. (2013). Speciation of Sr-90 and other metal cations in artificially contaminated soils: the influence of bone sorbent addition. in Journal of Soils and Sediments
Springer Heidelberg, Heidelberg., 13(2), 383-393.
https://doi.org/10.1007/s11368-012-0633-7

Dimović S, Smiciklas I, Sljivic-Ivanovic M, Dojčinović B. Speciation of Sr-90 and other metal cations in artificially contaminated soils: the influence of bone sorbent addition. in Journal of Soils and Sediments. 2013;13(2):383-393.
doi:10.1007/s11368-012-0633-7 .

Dimović, Slavko, Smiciklas, Ivana, Sljivic-Ivanovic, Marija, Dojčinović, Biljana, "Speciation of Sr-90 and other metal cations in artificially contaminated soils: the influence of bone sorbent addition" in Journal of Soils and Sediments, 13, no. 2 (2013):383-393,
https://doi.org/10.1007/s11368-012-0633-7 . .