TY  - JOUR
AU  - Smičiklas, Ivana D.
AU  - Dimović, Slavko
AU  - Šljivić-Ivanović, Marija Z.
AU  - Plećaš, Ilija B.
AU  - Lončar, Boris B.
AU  - Mitrić, Miodrag
PY  - 2010
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5608
AB  - The interaction between Sr2+ ions and variously treated animal bones was studied from the aspect of Sr-90 isotope immobilization from the contaminated effluents. As a source of biogenic, poorly-crystalline apatite, bone based materials, in general, were found to exhibit good retention properties towards Sr2+ cation. Furthermore, sorption capacities of H2O2 treated bone sample and sample annealed at 400 degrees C were found to be higher in respect to a commercial bone char and synthetic hydroxyapatite. Mentioned treatments induced partial organic phase removal from the pores of the skeletal material that caused the increase of the specific surface area. Higher temperatures provoked an increase of the apatite phase crystallinity, agglomeration of nano-crystals and a decrease of both the specific surface area and Sr2+ sorption. The immobilization was pH independent in the range 4-10, as a result of sorbents buffering properties. Kinetic data were well represented by the pseudo-second-order reaction model. Sorption isotherms were in better correlation with Freundlich than Langmuir theoretical model, whereas samples heated at 800 degrees C and 1000 degrees C showed S-type isotherms which were in a good agreement with sigmoidal Langmuir equation. The ion-exchange with Ca2+ cations and the specific cation sorption were two recognized mechanisms in the Sr2+ removal process, with relative contributions strongly dependent on the sorbents physicochemical properties. Sr2+ -loaded products were the most stable in the neutral and alkaline environments, while Ca2+ containing and acidic leaching solutions caused increased Sr2+ desorption. (C) 2010 Elsevier B.V. All rights reserved.
PB  - Elsevier
T2  - Journal of Nuclear Materials
T1  - Resource recovery of animal bones: Study on sorptive properties and mechanism for Sr2+ ions
EP  - 24
IS  - 1
SP  - 15
VL  - 400
DO  - 10.1016/j.jnucmat.2010.02.004
ER  - 

@article{
author = "Smičiklas, Ivana D. and Dimović, Slavko and Šljivić-Ivanović, Marija Z. and Plećaš, Ilija B. and Lončar, Boris B. and Mitrić, Miodrag",
year = "2010",
abstract = "The interaction between Sr2+ ions and variously treated animal bones was studied from the aspect of Sr-90 isotope immobilization from the contaminated effluents. As a source of biogenic, poorly-crystalline apatite, bone based materials, in general, were found to exhibit good retention properties towards Sr2+ cation. Furthermore, sorption capacities of H2O2 treated bone sample and sample annealed at 400 degrees C were found to be higher in respect to a commercial bone char and synthetic hydroxyapatite. Mentioned treatments induced partial organic phase removal from the pores of the skeletal material that caused the increase of the specific surface area. Higher temperatures provoked an increase of the apatite phase crystallinity, agglomeration of nano-crystals and a decrease of both the specific surface area and Sr2+ sorption. The immobilization was pH independent in the range 4-10, as a result of sorbents buffering properties. Kinetic data were well represented by the pseudo-second-order reaction model. Sorption isotherms were in better correlation with Freundlich than Langmuir theoretical model, whereas samples heated at 800 degrees C and 1000 degrees C showed S-type isotherms which were in a good agreement with sigmoidal Langmuir equation. The ion-exchange with Ca2+ cations and the specific cation sorption were two recognized mechanisms in the Sr2+ removal process, with relative contributions strongly dependent on the sorbents physicochemical properties. Sr2+ -loaded products were the most stable in the neutral and alkaline environments, while Ca2+ containing and acidic leaching solutions caused increased Sr2+ desorption. (C) 2010 Elsevier B.V. All rights reserved.",
publisher = "Elsevier",
journal = "Journal of Nuclear Materials",
title = "Resource recovery of animal bones: Study on sorptive properties and mechanism for Sr2+ ions",
pages = "24-15",
number = "1",
volume = "400",
doi = "10.1016/j.jnucmat.2010.02.004"
}

Smičiklas, I. D., Dimović, S., Šljivić-Ivanović, M. Z., Plećaš, I. B., Lončar, B. B.,& Mitrić, M.. (2010). Resource recovery of animal bones: Study on sorptive properties and mechanism for Sr2+ ions. in Journal of Nuclear Materials
Elsevier., 400(1), 15-24.
https://doi.org/10.1016/j.jnucmat.2010.02.004

Smičiklas ID, Dimović S, Šljivić-Ivanović MZ, Plećaš IB, Lončar BB, Mitrić M. Resource recovery of animal bones: Study on sorptive properties and mechanism for Sr2+ ions. in Journal of Nuclear Materials. 2010;400(1):15-24.
doi:10.1016/j.jnucmat.2010.02.004 .

Smičiklas, Ivana D., Dimović, Slavko, Šljivić-Ivanović, Marija Z., Plećaš, Ilija B., Lončar, Boris B., Mitrić, Miodrag, "Resource recovery of animal bones: Study on sorptive properties and mechanism for Sr2+ ions" in Journal of Nuclear Materials, 400, no. 1 (2010):15-24,
https://doi.org/10.1016/j.jnucmat.2010.02.004 . .

TY  - JOUR
AU  - Kaluđerović-Radoičić, Tatjana
AU  - Raičević, Slavica
PY  - 2010
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1619
AB  - Natural apatites represent a cost effective soil amendment, which can be used for in situ reduction of lead bioavailability and mobility. In our previous work, we selected Lisina apatite (LA) as a promising natural mineral for lead immobilization based on theoretical predictions. This study investigated the adsorption equilibrium and kinetics of aqueous Pb sorption onto Lisina apatite and synthetic hydroxyapatite (HAP) at different temperatures. XRD analysis indicated that LA consists of three minerals: fluorapatite, quartz and muscovite. After reaction with a Pb solution, only FA peaks were changed, confirming that fluorapatite present in LA is responsible for Pb sorption. Sorption experiments confirmed that both LA and HAP are effective in Pb removal. Langmuir, Freundlich, Temkin, Koble-Corrigan and Redlich-Peterson isotherm models were applied to experimental data. The kinetics of the sorption process on both minerals was well characterized by the pseudo-second order reaction rate. Results indicate that Pb immobilization by HAP is a two-step process: the first rapid phase, possibly surface complexation and secondary dissolution of HAP and precipitation of pyromorphite. The sorption of Pb by Lisina apatite is also a two-step process, but the reaction mechanisms are more complicated and need further research as the results indicate that different mechanisms dominate at different temperatures. The values of thermodynamic equilibrium constants and Gibbs free energy were also calculated. The values of AG obtained confirm the feasibility of both HAP and LA as effective sorbents of the Pb ion.
PB  - Elsevier Science Sa, Lausanne
T2  - Chemical Engineering Journal
T1  - Aqueous Pb sorption by synthetic and natural apatite: Kinetics, equilibrium and thermodynamic studies
EP  - 510
IS  - 2
SP  - 503
VL  - 160
DO  - 10.1016/j.cej.2010.03.061
ER  - 

@article{
author = "Kaluđerović-Radoičić, Tatjana and Raičević, Slavica",
year = "2010",
abstract = "Natural apatites represent a cost effective soil amendment, which can be used for in situ reduction of lead bioavailability and mobility. In our previous work, we selected Lisina apatite (LA) as a promising natural mineral for lead immobilization based on theoretical predictions. This study investigated the adsorption equilibrium and kinetics of aqueous Pb sorption onto Lisina apatite and synthetic hydroxyapatite (HAP) at different temperatures. XRD analysis indicated that LA consists of three minerals: fluorapatite, quartz and muscovite. After reaction with a Pb solution, only FA peaks were changed, confirming that fluorapatite present in LA is responsible for Pb sorption. Sorption experiments confirmed that both LA and HAP are effective in Pb removal. Langmuir, Freundlich, Temkin, Koble-Corrigan and Redlich-Peterson isotherm models were applied to experimental data. The kinetics of the sorption process on both minerals was well characterized by the pseudo-second order reaction rate. Results indicate that Pb immobilization by HAP is a two-step process: the first rapid phase, possibly surface complexation and secondary dissolution of HAP and precipitation of pyromorphite. The sorption of Pb by Lisina apatite is also a two-step process, but the reaction mechanisms are more complicated and need further research as the results indicate that different mechanisms dominate at different temperatures. The values of thermodynamic equilibrium constants and Gibbs free energy were also calculated. The values of AG obtained confirm the feasibility of both HAP and LA as effective sorbents of the Pb ion.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Chemical Engineering Journal",
title = "Aqueous Pb sorption by synthetic and natural apatite: Kinetics, equilibrium and thermodynamic studies",
pages = "510-503",
number = "2",
volume = "160",
doi = "10.1016/j.cej.2010.03.061"
}

Kaluđerović-Radoičić, T.,& Raičević, S.. (2010). Aqueous Pb sorption by synthetic and natural apatite: Kinetics, equilibrium and thermodynamic studies. in Chemical Engineering Journal
Elsevier Science Sa, Lausanne., 160(2), 503-510.
https://doi.org/10.1016/j.cej.2010.03.061

Kaluđerović-Radoičić T, Raičević S. Aqueous Pb sorption by synthetic and natural apatite: Kinetics, equilibrium and thermodynamic studies. in Chemical Engineering Journal. 2010;160(2):503-510.
doi:10.1016/j.cej.2010.03.061 .

Kaluđerović-Radoičić, Tatjana, Raičević, Slavica, "Aqueous Pb sorption by synthetic and natural apatite: Kinetics, equilibrium and thermodynamic studies" in Chemical Engineering Journal, 160, no. 2 (2010):503-510,
https://doi.org/10.1016/j.cej.2010.03.061 . .

TY  - JOUR
AU  - Stanić, Vojislav
AU  - Dimitrijević, Suzana
AU  - Antić-Stanković, Jelena
AU  - Mitrić, Miodrag
AU  - Jokić, Bojan
AU  - Plećaš, Ilija B.
AU  - Raičević, Slavica
PY  - 2010
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1610
AB  - Antimicrobial materials based on hydroxyapatite are potentially attractive in a wide variety of medical applications. The synthesis of copper and zinc-doped hydroxyapatite was done by neutralization method. This method consists of dissolving CuO or ZnO in solution of H3PO4, and the slow addition to suspension of Ca(OH)(2) for obtaining monophasic product. Characterization studies from XRD, SEM, TEM and FTIR spectra showed that particles of all samples are of nano size and they do not contain any discernible crystalline impurity. The quantitative elemental analysis showed that the copper and zinc ions fully incorporated into the hydroxyapatite. The antimicrobial effects of doped hydroxyapatite powders against pathogen bacterial strains Escherichia coli, Staphylococcus aureus and pathogen yeast Candida albicans were tested in solid and liquid media. Quantitative test in liquid media clearly showed that copper and zinc-doped samples had viable cells reduction ability for all tested strains.
PB  - Elsevier, Amsterdam
T2  - Applied Surface Science
T1  - Synthesis, characterization and antimicrobial activity of copper and zinc-doped hydroxyapatite nanopowders
EP  - 6089
IS  - 20
SP  - 6083
VL  - 256
DO  - 10.1016/j.apsusc.2010.03.124
ER  - 

@article{
author = "Stanić, Vojislav and Dimitrijević, Suzana and Antić-Stanković, Jelena and Mitrić, Miodrag and Jokić, Bojan and Plećaš, Ilija B. and Raičević, Slavica",
year = "2010",
abstract = "Antimicrobial materials based on hydroxyapatite are potentially attractive in a wide variety of medical applications. The synthesis of copper and zinc-doped hydroxyapatite was done by neutralization method. This method consists of dissolving CuO or ZnO in solution of H3PO4, and the slow addition to suspension of Ca(OH)(2) for obtaining monophasic product. Characterization studies from XRD, SEM, TEM and FTIR spectra showed that particles of all samples are of nano size and they do not contain any discernible crystalline impurity. The quantitative elemental analysis showed that the copper and zinc ions fully incorporated into the hydroxyapatite. The antimicrobial effects of doped hydroxyapatite powders against pathogen bacterial strains Escherichia coli, Staphylococcus aureus and pathogen yeast Candida albicans were tested in solid and liquid media. Quantitative test in liquid media clearly showed that copper and zinc-doped samples had viable cells reduction ability for all tested strains.",
publisher = "Elsevier, Amsterdam",
journal = "Applied Surface Science",
title = "Synthesis, characterization and antimicrobial activity of copper and zinc-doped hydroxyapatite nanopowders",
pages = "6089-6083",
number = "20",
volume = "256",
doi = "10.1016/j.apsusc.2010.03.124"
}

Stanić, V., Dimitrijević, S., Antić-Stanković, J., Mitrić, M., Jokić, B., Plećaš, I. B.,& Raičević, S.. (2010). Synthesis, characterization and antimicrobial activity of copper and zinc-doped hydroxyapatite nanopowders. in Applied Surface Science
Elsevier, Amsterdam., 256(20), 6083-6089.
https://doi.org/10.1016/j.apsusc.2010.03.124

Stanić V, Dimitrijević S, Antić-Stanković J, Mitrić M, Jokić B, Plećaš IB, Raičević S. Synthesis, characterization and antimicrobial activity of copper and zinc-doped hydroxyapatite nanopowders. in Applied Surface Science. 2010;256(20):6083-6089.
doi:10.1016/j.apsusc.2010.03.124 .

Stanić, Vojislav, Dimitrijević, Suzana, Antić-Stanković, Jelena, Mitrić, Miodrag, Jokić, Bojan, Plećaš, Ilija B., Raičević, Slavica, "Synthesis, characterization and antimicrobial activity of copper and zinc-doped hydroxyapatite nanopowders" in Applied Surface Science, 256, no. 20 (2010):6083-6089,
https://doi.org/10.1016/j.apsusc.2010.03.124 . .

TY  - JOUR
AU  - Smiljanić, Slavko N.
AU  - Smičiklas, Ivana D.
AU  - Perić-Grujić, Aleksandra
AU  - Lončar, Boris
AU  - Mitrić, Miodrag
PY  - 2010
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1654
AB  - Red mud, an abundant industrial waste from alumina industry, represents a rich source of various metal oxides, mainly of Fe2O3 Al2O3 and SiO2. In this study, the rinsed Bosnian red mud (RBRM) was evaluated as an economical, composite sorbent for aqueous Ni2+ ions. The process was investigated as a function of pH, contact time and initial metal concentration. The investigated mineral mixture exhibited a high acid neutralising capacity, and its most important role in cation immobilization was observed in the initial pH range 2-8. The initial metal ion concentration strongly influenced the sorption kinetics and equilibrium times. Addition of 5 g/L of RBRM caused 100% removal from the solutions of 10(-4) to 5 x 10(-4) mol/L, whereas with the further increase of Ni2+ concentration to 8 x 10(-3) mol/L, the removal efficiency decreased to 26%. The maximum sorption capacity of 0.372 mmol/g, at initial pH 5, was determined using Langmuir theoretical model. The possibility of sorption efficiency improvement by annealing RBRM powder was investigated in the range 200-900 degrees C and the relationships between temperature, red mud physicochemical and sorption properties were established. The optimum heating temperature was found to be 600 degrees C, due to water exclusion from gibbsite and bayerite phases, leading to improved porosity and surface area, as well as increased pH value and sorption efficiency. The stability of the sorbed cation was assessed by leaching experiments in distilled water and acidic TCLP2 solution.
PB  - Elsevier Science Sa, Lausanne
T2  - Chemical Engineering Journal
T1  - Rinsed and thermally treated red mud sorbents for aqueous Ni2+ ions
EP  - 83
IS  - 1
SP  - 75
VL  - 162
DO  - 10.1016/j.cej.2010.04.062
ER  - 

@article{
author = "Smiljanić, Slavko N. and Smičiklas, Ivana D. and Perić-Grujić, Aleksandra and Lončar, Boris and Mitrić, Miodrag",
year = "2010",
abstract = "Red mud, an abundant industrial waste from alumina industry, represents a rich source of various metal oxides, mainly of Fe2O3 Al2O3 and SiO2. In this study, the rinsed Bosnian red mud (RBRM) was evaluated as an economical, composite sorbent for aqueous Ni2+ ions. The process was investigated as a function of pH, contact time and initial metal concentration. The investigated mineral mixture exhibited a high acid neutralising capacity, and its most important role in cation immobilization was observed in the initial pH range 2-8. The initial metal ion concentration strongly influenced the sorption kinetics and equilibrium times. Addition of 5 g/L of RBRM caused 100% removal from the solutions of 10(-4) to 5 x 10(-4) mol/L, whereas with the further increase of Ni2+ concentration to 8 x 10(-3) mol/L, the removal efficiency decreased to 26%. The maximum sorption capacity of 0.372 mmol/g, at initial pH 5, was determined using Langmuir theoretical model. The possibility of sorption efficiency improvement by annealing RBRM powder was investigated in the range 200-900 degrees C and the relationships between temperature, red mud physicochemical and sorption properties were established. The optimum heating temperature was found to be 600 degrees C, due to water exclusion from gibbsite and bayerite phases, leading to improved porosity and surface area, as well as increased pH value and sorption efficiency. The stability of the sorbed cation was assessed by leaching experiments in distilled water and acidic TCLP2 solution.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Chemical Engineering Journal",
title = "Rinsed and thermally treated red mud sorbents for aqueous Ni2+ ions",
pages = "83-75",
number = "1",
volume = "162",
doi = "10.1016/j.cej.2010.04.062"
}

Smiljanić, S. N., Smičiklas, I. D., Perić-Grujić, A., Lončar, B.,& Mitrić, M.. (2010). Rinsed and thermally treated red mud sorbents for aqueous Ni2+ ions. in Chemical Engineering Journal
Elsevier Science Sa, Lausanne., 162(1), 75-83.
https://doi.org/10.1016/j.cej.2010.04.062

Smiljanić SN, Smičiklas ID, Perić-Grujić A, Lončar B, Mitrić M. Rinsed and thermally treated red mud sorbents for aqueous Ni2+ ions. in Chemical Engineering Journal. 2010;162(1):75-83.
doi:10.1016/j.cej.2010.04.062 .

Smiljanić, Slavko N., Smičiklas, Ivana D., Perić-Grujić, Aleksandra, Lončar, Boris, Mitrić, Miodrag, "Rinsed and thermally treated red mud sorbents for aqueous Ni2+ ions" in Chemical Engineering Journal, 162, no. 1 (2010):75-83,
https://doi.org/10.1016/j.cej.2010.04.062 . .

TY  - JOUR
AU  - Raičević, Slavica
AU  - Stanić, Vojislav
AU  - Kaluđerović-Radoičić, Tatjana
PY  - 2007
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1176
AB  - Several approaches for immobilization of arsenic (As) based on the transformation of its soluble forms (compounds) into highly insoluble arsenate apatite Ca-5(AsO4)(3)OH have been proposed. These immobilization techniques are successfully applied in treatment of industrial waste containing As. Quite the contrary, treatment of soil contaminated with As by apatite amendments, instead of immobilization of this toxic element, increases its mobility and bioavailability. The mechanism underlying these opposite effects still remains elusive. Here, the stability analysis of different calcium arsenates: Ca-5(AsO4)(3)OH, Ca-4(AsO4)(2)(OH)(2), Ca-3(AsO4)(2) Ca5H2(AsO4)(2) and CaHASO(4) was performed, which is based on the calculation of the ion-ion interaction potential (IIIP). It has been demonstrated earlier that HIP, representing the main term of the cohesive energy, is a suitable parameter for assessment of mineral stability. According to the results of this analysis, arsenate apatite with IIIP value of -0.578 Ry represents the most stable chemical form among analyzed compounds. Based on this finding, we proposed a mechanism of formation of arsenate apatite in the presence of hydroxyapatite. This mechanism can explain the suitability of this approach for the treatment of industrial waste and its limitations for in situ treatment of soil and water contaminated with As.
PB  - Trans Tech Publications Ltd, Durnten-Zurich
T2  - Research Trends in Contemporary Materials Science
T1  - Theoretical assessment of calcium arsenates stability:Application in the treatment of arsenic contaminated waste
EP  - +
SP  - 131
VL  - 555
UR  - https://hdl.handle.net/21.15107/rcub_vinar_6679
ER  - 

@article{
author = "Raičević, Slavica and Stanić, Vojislav and Kaluđerović-Radoičić, Tatjana",
year = "2007",
abstract = "Several approaches for immobilization of arsenic (As) based on the transformation of its soluble forms (compounds) into highly insoluble arsenate apatite Ca-5(AsO4)(3)OH have been proposed. These immobilization techniques are successfully applied in treatment of industrial waste containing As. Quite the contrary, treatment of soil contaminated with As by apatite amendments, instead of immobilization of this toxic element, increases its mobility and bioavailability. The mechanism underlying these opposite effects still remains elusive. Here, the stability analysis of different calcium arsenates: Ca-5(AsO4)(3)OH, Ca-4(AsO4)(2)(OH)(2), Ca-3(AsO4)(2) Ca5H2(AsO4)(2) and CaHASO(4) was performed, which is based on the calculation of the ion-ion interaction potential (IIIP). It has been demonstrated earlier that HIP, representing the main term of the cohesive energy, is a suitable parameter for assessment of mineral stability. According to the results of this analysis, arsenate apatite with IIIP value of -0.578 Ry represents the most stable chemical form among analyzed compounds. Based on this finding, we proposed a mechanism of formation of arsenate apatite in the presence of hydroxyapatite. This mechanism can explain the suitability of this approach for the treatment of industrial waste and its limitations for in situ treatment of soil and water contaminated with As.",
publisher = "Trans Tech Publications Ltd, Durnten-Zurich",
journal = "Research Trends in Contemporary Materials Science",
title = "Theoretical assessment of calcium arsenates stability:Application in the treatment of arsenic contaminated waste",
pages = "+-131",
volume = "555",
url = "https://hdl.handle.net/21.15107/rcub_vinar_6679"
}

Raičević, S., Stanić, V.,& Kaluđerović-Radoičić, T.. (2007). Theoretical assessment of calcium arsenates stability:Application in the treatment of arsenic contaminated waste. in Research Trends in Contemporary Materials Science
Trans Tech Publications Ltd, Durnten-Zurich., 555, 131-+.
https://hdl.handle.net/21.15107/rcub_vinar_6679

Raičević S, Stanić V, Kaluđerović-Radoičić T. Theoretical assessment of calcium arsenates stability:Application in the treatment of arsenic contaminated waste. in Research Trends in Contemporary Materials Science. 2007;555:131-+.
https://hdl.handle.net/21.15107/rcub_vinar_6679 .

Raičević, Slavica, Stanić, Vojislav, Kaluđerović-Radoičić, Tatjana, "Theoretical assessment of calcium arsenates stability:Application in the treatment of arsenic contaminated waste" in Research Trends in Contemporary Materials Science, 555 (2007):131-+,
https://hdl.handle.net/21.15107/rcub_vinar_6679 .