TY  - JOUR
AU  - Dimitrijević, Jelena
AU  - Jevtić, Sanja
AU  - Marinković, Aleksandar
AU  - Simić, Marija
AU  - Koprivica, Marija
AU  - Petrović, Jelena
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6463
AB  - In the proposed study, agro-waste biomass oat straw (OS) was considered a potential adsorbent for Cu(II), Zn(II), and Se(IV) removal from aqueous solutions. In order to obtain material with better adsorption abilities, the OS was modified by a deep eutectic solvent (DES). Structural changes caused by the applied modification route were considered by pHpzc, SEM, FTIR, and DSC/TG analysis. These methods discovered that lignocellulosic biomass degradation and material functionalization were achieved by DES treatment. Preliminary adsorption tests showed an over fourfold increase in capacity upon modification. The kinetic parameters implied that adsorption on modified material followed the pseudo-second-order kinetic model. Different isotherm models were applied to experimental data, while the Sips isotherm model best describes the equilibrium of the adsorption process on the tested modified material. According to this isotherm model, the maximum achieved adsorption capacities of Cu(II), Zn(II), and Se(IV) were 48.21, 55.06, and 87.85 mg/g, respectively. The summarized experimental results revealed that the adsorption process of selected cations on modified OS was predominantly caused by chemisorption, while, in addition to chemisorption, electrostatic forces were also responsible for Se(IV) removal. Desorption test showed that the prepared material could be reused for at least 3 cycles, with minimal efficiency loss. Briefly, this study reinforces that DES-modified agro-waste biomass could be used as a promising adsorbent for cations and oxyanions from wastewater.
PB  - MDPI
T2  - Processes
T1  - Ability of Deep Eutectic Solvent Modified Oat Straw for Cu(II), Zn(II), and Se(IV) Ions Removal
IS  - 5
SP  - 1308
VL  - 11
DO  - 10.3390/pr11051308
ER  - 

@article{
author = "Dimitrijević, Jelena and Jevtić, Sanja and Marinković, Aleksandar and Simić, Marija and Koprivica, Marija and Petrović, Jelena",
year = "2023",
abstract = "In the proposed study, agro-waste biomass oat straw (OS) was considered a potential adsorbent for Cu(II), Zn(II), and Se(IV) removal from aqueous solutions. In order to obtain material with better adsorption abilities, the OS was modified by a deep eutectic solvent (DES). Structural changes caused by the applied modification route were considered by pHpzc, SEM, FTIR, and DSC/TG analysis. These methods discovered that lignocellulosic biomass degradation and material functionalization were achieved by DES treatment. Preliminary adsorption tests showed an over fourfold increase in capacity upon modification. The kinetic parameters implied that adsorption on modified material followed the pseudo-second-order kinetic model. Different isotherm models were applied to experimental data, while the Sips isotherm model best describes the equilibrium of the adsorption process on the tested modified material. According to this isotherm model, the maximum achieved adsorption capacities of Cu(II), Zn(II), and Se(IV) were 48.21, 55.06, and 87.85 mg/g, respectively. The summarized experimental results revealed that the adsorption process of selected cations on modified OS was predominantly caused by chemisorption, while, in addition to chemisorption, electrostatic forces were also responsible for Se(IV) removal. Desorption test showed that the prepared material could be reused for at least 3 cycles, with minimal efficiency loss. Briefly, this study reinforces that DES-modified agro-waste biomass could be used as a promising adsorbent for cations and oxyanions from wastewater.",
publisher = "MDPI",
journal = "Processes",
title = "Ability of Deep Eutectic Solvent Modified Oat Straw for Cu(II), Zn(II), and Se(IV) Ions Removal",
number = "5",
pages = "1308",
volume = "11",
doi = "10.3390/pr11051308"
}

Dimitrijević, J., Jevtić, S., Marinković, A., Simić, M., Koprivica, M.,& Petrović, J.. (2023). Ability of Deep Eutectic Solvent Modified Oat Straw for Cu(II), Zn(II), and Se(IV) Ions Removal. in Processes
MDPI., 11(5), 1308.
https://doi.org/10.3390/pr11051308

Dimitrijević J, Jevtić S, Marinković A, Simić M, Koprivica M, Petrović J. Ability of Deep Eutectic Solvent Modified Oat Straw for Cu(II), Zn(II), and Se(IV) Ions Removal. in Processes. 2023;11(5):1308.
doi:10.3390/pr11051308 .

Dimitrijević, Jelena, Jevtić, Sanja, Marinković, Aleksandar, Simić, Marija, Koprivica, Marija, Petrović, Jelena, "Ability of Deep Eutectic Solvent Modified Oat Straw for Cu(II), Zn(II), and Se(IV) Ions Removal" in Processes, 11, no. 5 (2023):1308,
https://doi.org/10.3390/pr11051308 . .

TY  - JOUR
AU  - Savić, Veljko
AU  - Topalović, Vladimir
AU  - Nikolić, Jelena
AU  - Jevtić, Sanja
AU  - Manić, Nebojša
AU  - Komatina, Mirko
AU  - Matijašević, Srđan
AU  - Grujić, Snežana
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6579
AB  - Great waste production alongside limited natural resources represents huge environmental and economic problems worldwide. Sustainable waste management and industrial production can reduce pollution and gain some economic benefits. Eco-friendly thermal insulators such as foam glasses can be produced using secondary raw materials in open-loop recycling. Foam glasses were successfully produced using green bottle glass and sugar beet factory lime (SBFL), CaCO3-rich waste as a novel foaming agent. Glass powder was mixed with different amounts of SBFL, uniaxially pressed at 20 MPa, and sintered at different temperatures. The influence of sintering temperature and the addition of a foaming agent was examined. Obtained samples were mechanically, thermally, and microstructurally characterized. Results showed that samples sintered at 800 °C have the best properties. Obtained foam glasses can be used in a variety of industries where thermal insulation, non-flammability, and non-toxic materials are required.
PB  - Elsevier Ltd.
T2  - Heliyon
T1  - Foam glasses made from green bottle glass and sugar beet factory lime as a foaming agent
IS  - 7
SP  - e17664
VL  - 9
DO  - 10.1016/j.heliyon.2023.e17664
ER  - 

@article{
author = "Savić, Veljko and Topalović, Vladimir and Nikolić, Jelena and Jevtić, Sanja and Manić, Nebojša and Komatina, Mirko and Matijašević, Srđan and Grujić, Snežana",
year = "2023",
abstract = "Great waste production alongside limited natural resources represents huge environmental and economic problems worldwide. Sustainable waste management and industrial production can reduce pollution and gain some economic benefits. Eco-friendly thermal insulators such as foam glasses can be produced using secondary raw materials in open-loop recycling. Foam glasses were successfully produced using green bottle glass and sugar beet factory lime (SBFL), CaCO3-rich waste as a novel foaming agent. Glass powder was mixed with different amounts of SBFL, uniaxially pressed at 20 MPa, and sintered at different temperatures. The influence of sintering temperature and the addition of a foaming agent was examined. Obtained samples were mechanically, thermally, and microstructurally characterized. Results showed that samples sintered at 800 °C have the best properties. Obtained foam glasses can be used in a variety of industries where thermal insulation, non-flammability, and non-toxic materials are required.",
publisher = "Elsevier Ltd.",
journal = "Heliyon",
title = "Foam glasses made from green bottle glass and sugar beet factory lime as a foaming agent",
number = "7",
pages = "e17664",
volume = "9",
doi = "10.1016/j.heliyon.2023.e17664"
}

Savić, V., Topalović, V., Nikolić, J., Jevtić, S., Manić, N., Komatina, M., Matijašević, S.,& Grujić, S.. (2023). Foam glasses made from green bottle glass and sugar beet factory lime as a foaming agent. in Heliyon
Elsevier Ltd.., 9(7), e17664.
https://doi.org/10.1016/j.heliyon.2023.e17664

Savić V, Topalović V, Nikolić J, Jevtić S, Manić N, Komatina M, Matijašević S, Grujić S. Foam glasses made from green bottle glass and sugar beet factory lime as a foaming agent. in Heliyon. 2023;9(7):e17664.
doi:10.1016/j.heliyon.2023.e17664 .

Savić, Veljko, Topalović, Vladimir, Nikolić, Jelena, Jevtić, Sanja, Manić, Nebojša, Komatina, Mirko, Matijašević, Srđan, Grujić, Snežana, "Foam glasses made from green bottle glass and sugar beet factory lime as a foaming agent" in Heliyon, 9, no. 7 (2023):e17664,
https://doi.org/10.1016/j.heliyon.2023.e17664 . .

TY  - JOUR
AU  - Kamberović, Željko
AU  - Ranitović, Milisav
AU  - Manojlović, Vaso
AU  - Jevtić, Sanja
AU  - Gajić, Nataša
AU  - Štulović, Marija
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6624
AB  - Jarosite is a specific type of hazardous waste determined by the origin of the primary raw materials of the hydrometallurgical process of zinc production. It represents a very demanding raw material for further treatment and recover of valuable metals due to their complex phase structures. The aim of this study was to collect relevant data for the designing the process of thermal decomposition of jarosite Pb–Ag sludge desired structure, which includes the transformation of Fe(II) and Fe(III) sulfates to insoluble hematite, retention of Cu, Zn and In in the form of soluble sulfates, with the possibility of their subsequent valorization by hydrometallurgical methods. Thermal decomposition of the industrial sample of jarosite Pb–Ag sludge is investigated under different temperatures (670–750 °C) and atmospheres (air and nitrogen) by thermodynamic, thermogravimetric and kinetic analysis. Physicochemical characterization of samples was done by ICP-MS, AAS, IMS, XRD, SEM techniques. The examined sample is ammonium jarosite type with the dominant phases NH4Fe3(SO4)2(OH)6 × H2O (44.00%) and ZnFe2O4 (15.25%). Experimental results, physicochemical characterization and thermodynamic analysis confirmed that the maximum content of hematite (Fe2O3) and metal sulfates (Cu, Pb and Zn), as required compounds for selective metal extraction, without the presence of unreacted ammonium jarosite, was obtained at 730 °C. A kinetic study obtained by thermogravimetric analysis showed that the thermal decomposition of jarosite Pb–Ag sludge takes place in two phases. The activation energy, calculated using the Kissinger–Akahira–Sunose iso-conversion method, was 235.4 kJ mol−1 and 208.8 kJ mol−1 for the decomposition of jarosite in air and nitrogen, respectively.
PB  - Springer Science and Business Media B.V.
T2  - Journal of Thermal Analysis and Calorimetry
T1  - Thermodynamic and kinetic analysis of jarosite Pb–Ag sludge thermal decomposition for hydrometallurgical utilization of valuable elements
EP  - 11810
IS  - 21
SP  - 11799
VL  - 148
DO  - 10.1007/s10973-023-12508-3
ER  - 

@article{
author = "Kamberović, Željko and Ranitović, Milisav and Manojlović, Vaso and Jevtić, Sanja and Gajić, Nataša and Štulović, Marija",
year = "2023",
abstract = "Jarosite is a specific type of hazardous waste determined by the origin of the primary raw materials of the hydrometallurgical process of zinc production. It represents a very demanding raw material for further treatment and recover of valuable metals due to their complex phase structures. The aim of this study was to collect relevant data for the designing the process of thermal decomposition of jarosite Pb–Ag sludge desired structure, which includes the transformation of Fe(II) and Fe(III) sulfates to insoluble hematite, retention of Cu, Zn and In in the form of soluble sulfates, with the possibility of their subsequent valorization by hydrometallurgical methods. Thermal decomposition of the industrial sample of jarosite Pb–Ag sludge is investigated under different temperatures (670–750 °C) and atmospheres (air and nitrogen) by thermodynamic, thermogravimetric and kinetic analysis. Physicochemical characterization of samples was done by ICP-MS, AAS, IMS, XRD, SEM techniques. The examined sample is ammonium jarosite type with the dominant phases NH4Fe3(SO4)2(OH)6 × H2O (44.00%) and ZnFe2O4 (15.25%). Experimental results, physicochemical characterization and thermodynamic analysis confirmed that the maximum content of hematite (Fe2O3) and metal sulfates (Cu, Pb and Zn), as required compounds for selective metal extraction, without the presence of unreacted ammonium jarosite, was obtained at 730 °C. A kinetic study obtained by thermogravimetric analysis showed that the thermal decomposition of jarosite Pb–Ag sludge takes place in two phases. The activation energy, calculated using the Kissinger–Akahira–Sunose iso-conversion method, was 235.4 kJ mol−1 and 208.8 kJ mol−1 for the decomposition of jarosite in air and nitrogen, respectively.",
publisher = "Springer Science and Business Media B.V.",
journal = "Journal of Thermal Analysis and Calorimetry",
title = "Thermodynamic and kinetic analysis of jarosite Pb–Ag sludge thermal decomposition for hydrometallurgical utilization of valuable elements",
pages = "11810-11799",
number = "21",
volume = "148",
doi = "10.1007/s10973-023-12508-3"
}

Kamberović, Ž., Ranitović, M., Manojlović, V., Jevtić, S., Gajić, N.,& Štulović, M.. (2023). Thermodynamic and kinetic analysis of jarosite Pb–Ag sludge thermal decomposition for hydrometallurgical utilization of valuable elements. in Journal of Thermal Analysis and Calorimetry
Springer Science and Business Media B.V.., 148(21), 11799-11810.
https://doi.org/10.1007/s10973-023-12508-3

Kamberović Ž, Ranitović M, Manojlović V, Jevtić S, Gajić N, Štulović M. Thermodynamic and kinetic analysis of jarosite Pb–Ag sludge thermal decomposition for hydrometallurgical utilization of valuable elements. in Journal of Thermal Analysis and Calorimetry. 2023;148(21):11799-11810.
doi:10.1007/s10973-023-12508-3 .

Kamberović, Željko, Ranitović, Milisav, Manojlović, Vaso, Jevtić, Sanja, Gajić, Nataša, Štulović, Marija, "Thermodynamic and kinetic analysis of jarosite Pb–Ag sludge thermal decomposition for hydrometallurgical utilization of valuable elements" in Journal of Thermal Analysis and Calorimetry, 148, no. 21 (2023):11799-11810,
https://doi.org/10.1007/s10973-023-12508-3 . .

TY  - JOUR
AU  - Radovanović, Dragana
AU  - Dikić, Jelena
AU  - Štulović, Marija
AU  - Anđić, Zoran
AU  - Kamberović, Željko
AU  - Jevtić, Sanja
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6872
AB  - Low-cost   and   easily   available   natural   zeolite   is   a promising   adsorbent   for   metal   ions   removal   in   wastewater treatment.  The  possibility  of  using  zeolitic  tuff  from  Serbia  in  the form  of  Na-enriched  natural  zeolite  (Na-Z)  for  the adsorption  of Pb2+, Zn2+, Cu2+, and Ni2+ions from wastewater was investigated in the  presented  paper.  The  research  included  Na-Z  characterization and   determination   of   adsorption   kinetics   in   individual   ion adsorption tests using Weber-Morris intraparticle diffusion model, non-linear  pseudo-first-order  (PFO),  pseudo-second-order  (PSO) and mixed-order (MO) kinetic models. The results indicate that the adsorption processes of metal ions on Na-Z are complex processes dominated  by  multiple  rate-limiting  mechanisms  and  best  defined by the MO model. The mechanisms of ion diffusion and adsorption to active sites are equally represented in the Pb2+adsorption process. The  mechanism  of  ion  adsorption  on  the  active  sites  is  the  rate-limiting step in the Zn2+adsorption process, while in the case of the Cu2+and  Ni2+adsorption  ion  diffusion  is  the  rate-limiting  kinetic mechanism. Within the MO model, the PFO rate (external/internal diffusion)  and  the  PSO  rate  (adsorption  on  active  sites)  were calculated and results wereapplied to a multicomponent wastewater sample in order to determine and explain the adsorption efficiency in wastewater treatment. The results show that the rate of adsorption of  individual  metal  ions  and  the  efficiency  of  ion  removal  from  a multicomponent   wastewater   sample   are   influenced   by   several factors including the radius of the hydrated ion and the free energy of hydration. The achieved removal of metal ions by Na-Z is Pb2+(89%)  >  Cu2+(72%)  >  Zn2+(61%)  >  Ni2+(58%)  and  defines  Na-enriched  naturalzeolite  as  an  effective  adsorbent  in  wastewater treatment.
PB  - The Netherlands Press
T2  - Metallurgical and Materials Engineering
T1  - Sorption of Pb2+, Zn2+, Cu2+ and Ni2+ Ions on Na-enriched Natural Zeolite for Wastewater Treatment Process: A Kinetic Approach
EP  - 35
IS  - 3
SP  - 20
VL  - 29
DO  - 10.56801/MME1007
ER  - 

@article{
author = "Radovanović, Dragana and Dikić, Jelena and Štulović, Marija and Anđić, Zoran and Kamberović, Željko and Jevtić, Sanja",
year = "2023",
abstract = "Low-cost   and   easily   available   natural   zeolite   is   a promising   adsorbent   for   metal   ions   removal   in   wastewater treatment.  The  possibility  of  using  zeolitic  tuff  from  Serbia  in  the form  of  Na-enriched  natural  zeolite  (Na-Z)  for  the adsorption  of Pb2+, Zn2+, Cu2+, and Ni2+ions from wastewater was investigated in the  presented  paper.  The  research  included  Na-Z  characterization and   determination   of   adsorption   kinetics   in   individual   ion adsorption tests using Weber-Morris intraparticle diffusion model, non-linear  pseudo-first-order  (PFO),  pseudo-second-order  (PSO) and mixed-order (MO) kinetic models. The results indicate that the adsorption processes of metal ions on Na-Z are complex processes dominated  by  multiple  rate-limiting  mechanisms  and  best  defined by the MO model. The mechanisms of ion diffusion and adsorption to active sites are equally represented in the Pb2+adsorption process. The  mechanism  of  ion  adsorption  on  the  active  sites  is  the  rate-limiting step in the Zn2+adsorption process, while in the case of the Cu2+and  Ni2+adsorption  ion  diffusion  is  the  rate-limiting  kinetic mechanism. Within the MO model, the PFO rate (external/internal diffusion)  and  the  PSO  rate  (adsorption  on  active  sites)  were calculated and results wereapplied to a multicomponent wastewater sample in order to determine and explain the adsorption efficiency in wastewater treatment. The results show that the rate of adsorption of  individual  metal  ions  and  the  efficiency  of  ion  removal  from  a multicomponent   wastewater   sample   are   influenced   by   several factors including the radius of the hydrated ion and the free energy of hydration. The achieved removal of metal ions by Na-Z is Pb2+(89%)  >  Cu2+(72%)  >  Zn2+(61%)  >  Ni2+(58%)  and  defines  Na-enriched  naturalzeolite  as  an  effective  adsorbent  in  wastewater treatment.",
publisher = "The Netherlands Press",
journal = "Metallurgical and Materials Engineering",
title = "Sorption of Pb2+, Zn2+, Cu2+ and Ni2+ Ions on Na-enriched Natural Zeolite for Wastewater Treatment Process: A Kinetic Approach",
pages = "35-20",
number = "3",
volume = "29",
doi = "10.56801/MME1007"
}

Radovanović, D., Dikić, J., Štulović, M., Anđić, Z., Kamberović, Ž.,& Jevtić, S.. (2023). Sorption of Pb2+, Zn2+, Cu2+ and Ni2+ Ions on Na-enriched Natural Zeolite for Wastewater Treatment Process: A Kinetic Approach. in Metallurgical and Materials Engineering
The Netherlands Press., 29(3), 20-35.
https://doi.org/10.56801/MME1007

Radovanović D, Dikić J, Štulović M, Anđić Z, Kamberović Ž, Jevtić S. Sorption of Pb2+, Zn2+, Cu2+ and Ni2+ Ions on Na-enriched Natural Zeolite for Wastewater Treatment Process: A Kinetic Approach. in Metallurgical and Materials Engineering. 2023;29(3):20-35.
doi:10.56801/MME1007 .

Radovanović, Dragana, Dikić, Jelena, Štulović, Marija, Anđić, Zoran, Kamberović, Željko, Jevtić, Sanja, "Sorption of Pb2+, Zn2+, Cu2+ and Ni2+ Ions on Na-enriched Natural Zeolite for Wastewater Treatment Process: A Kinetic Approach" in Metallurgical and Materials Engineering, 29, no. 3 (2023):20-35,
https://doi.org/10.56801/MME1007 . .

Kamberović, Ž., Anđić, Z., Štulović, M., Radovanović, D., Jevtić, S.,& Nikolić, V.. (2023). Tehnološki postupak tretmana otpadnih voda nastalih na proizvodnom kompleksu "EcoMet Recilaža" d.o.o. u Zajači. .
https://hdl.handle.net/21.15107/rcub_technorep_7080

Kamberović Ž, Anđić Z, Štulović M, Radovanović D, Jevtić S, Nikolić V. Tehnološki postupak tretmana otpadnih voda nastalih na proizvodnom kompleksu "EcoMet Recilaža" d.o.o. u Zajači. 2023;.
https://hdl.handle.net/21.15107/rcub_technorep_7080 .

Kamberović, Željko, Anđić, Zoran, Štulović, Marija, Radovanović, Dragana, Jevtić, Sanja, Nikolić, Vesna, "Tehnološki postupak tretmana otpadnih voda nastalih na proizvodnom kompleksu "EcoMet Recilaža" d.o.o. u Zajači" (2023),
https://hdl.handle.net/21.15107/rcub_technorep_7080 .

TY  - JOUR
AU  - Marinkovic, Filip
AU  - Popovic, Dusan
AU  - Jovanovic, Jelena
AU  - Stankovic, Branislav
AU  - Jevtić, Sanja
AU  - Adnadjevic, Borivoj
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4998
AB  - The effect of the weight fraction of NaA zeolite on thermal properties (specific heat capacity, thermal diffusivity, thermal conductivity) and dielectric properties (electrical conductivity, real and imaginary electric permittivity) of composites based on low-density polyethylene (LDPE) and NaA zeolite is examined. Composite samples containing from 5 to 30 wt% zeolite are prepared using the compression molding technique. The degree of dispersion and the weight fraction of filler in the LDPE/NaA zeolite composites are determined using X-ray diffraction. A linear decrease in the values of the specific heat capacity with an increase in the weight fraction of zeolite is observed using differential scanning calorimetry. The laser flash method is used to determine the thermal diffusivity of the composites. An increase in effective thermal diffusivity and abrupt increase in the range from 15 to 20 wt% of zeolite are established. It is demonstrated that effective thermal conductivity increases with an increase in the weight fraction of zeolite, and an abrupt increase in the range from 15 to 20 wt% is observed. Dielectric spectroscopy measurements are performed to determine the real and imaginary parts of permittivity. An increase of real and imaginary parts of permittivity of LDPE/NaA zeolite composites, with increasing weight fraction of zeolite, is established. Two relaxation peaks of the imaginary parts of permittivity of LDPE/NaA zeolite composites are detected. An increase of electrical conductivity with increasing weight fraction of zeolite and abrupt increase in the range 15 to 20 wt% are noticed. (c) 2021 Society of Industrial Chemistry.
T2  - Polymer International
T1  - Thermal and dielectric properties of low-density polyethylene/NaA zeolite composites
EP  - 73
IS  - 1
SP  - 66
VL  - 71
DO  - 10.1002/pi.6284
ER  - 

@article{
author = "Marinkovic, Filip and Popovic, Dusan and Jovanovic, Jelena and Stankovic, Branislav and Jevtić, Sanja and Adnadjevic, Borivoj",
year = "2022",
abstract = "The effect of the weight fraction of NaA zeolite on thermal properties (specific heat capacity, thermal diffusivity, thermal conductivity) and dielectric properties (electrical conductivity, real and imaginary electric permittivity) of composites based on low-density polyethylene (LDPE) and NaA zeolite is examined. Composite samples containing from 5 to 30 wt% zeolite are prepared using the compression molding technique. The degree of dispersion and the weight fraction of filler in the LDPE/NaA zeolite composites are determined using X-ray diffraction. A linear decrease in the values of the specific heat capacity with an increase in the weight fraction of zeolite is observed using differential scanning calorimetry. The laser flash method is used to determine the thermal diffusivity of the composites. An increase in effective thermal diffusivity and abrupt increase in the range from 15 to 20 wt% of zeolite are established. It is demonstrated that effective thermal conductivity increases with an increase in the weight fraction of zeolite, and an abrupt increase in the range from 15 to 20 wt% is observed. Dielectric spectroscopy measurements are performed to determine the real and imaginary parts of permittivity. An increase of real and imaginary parts of permittivity of LDPE/NaA zeolite composites, with increasing weight fraction of zeolite, is established. Two relaxation peaks of the imaginary parts of permittivity of LDPE/NaA zeolite composites are detected. An increase of electrical conductivity with increasing weight fraction of zeolite and abrupt increase in the range 15 to 20 wt% are noticed. (c) 2021 Society of Industrial Chemistry.",
journal = "Polymer International",
title = "Thermal and dielectric properties of low-density polyethylene/NaA zeolite composites",
pages = "73-66",
number = "1",
volume = "71",
doi = "10.1002/pi.6284"
}

Marinkovic, F., Popovic, D., Jovanovic, J., Stankovic, B., Jevtić, S.,& Adnadjevic, B.. (2022). Thermal and dielectric properties of low-density polyethylene/NaA zeolite composites. in Polymer International, 71(1), 66-73.
https://doi.org/10.1002/pi.6284

Marinkovic F, Popovic D, Jovanovic J, Stankovic B, Jevtić S, Adnadjevic B. Thermal and dielectric properties of low-density polyethylene/NaA zeolite composites. in Polymer International. 2022;71(1):66-73.
doi:10.1002/pi.6284 .

Marinkovic, Filip, Popovic, Dusan, Jovanovic, Jelena, Stankovic, Branislav, Jevtić, Sanja, Adnadjevic, Borivoj, "Thermal and dielectric properties of low-density polyethylene/NaA zeolite composites" in Polymer International, 71, no. 1 (2022):66-73,
https://doi.org/10.1002/pi.6284 . .

TY  - JOUR
AU  - Pajnik, Jelena
AU  - Dikić, Jelena
AU  - Milovanović, Stoja
AU  - Milošević, Milena
AU  - Jevtić, Sanja
AU  - Lukić, Ivana
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5085
AB  - Chitosan/gelatin and chitosan/gelatin/zeolite films prepared by solvent casting method were
impregnated with a mixture of thymol and carvacrol using a green solvent, supercritical carbon 
dioxide at 35 °C and 30 MPa, during 18 h. Proposed method enabled preparation of biocompatible 
and biodegradable blends with strong antioxidant and antibacterial activity, whereby amounts of 
loaded thymol/carvacrol mixture were in the range from 3.3-6%. After initial burst release, both 
types of films exhibited gradual release of bioactive compounds, with around 72 and 96% of 
impregnated thymol/carvacrol mixture released in water and PBS (pH 7.4) during tested period of 10 days, respectively. Results of water vapor transmission rate (> 76 gm-2
day-1) confirmed that prepared composites are suitable for wound dressing application. Thermal analysis showed superior properties of prepared thymol/carvacrol loaded films compared to control samples. In addition, mechanical and structural properties, as well as solubility and swelling behavior of the obtained films were investigated in detail.
PB  - Wiley
T2  - Macromolecular Materials and Engineering
T1  - Zeolite/chitosan/gelatin films: preparation, supercritical CO2 processing, characterization and bioactivity
EP  - 13
IS  - 4
SP  - 1
VL  - 307
DO  - 10.1002/mame.202200009
ER  - 

@article{
author = "Pajnik, Jelena and Dikić, Jelena and Milovanović, Stoja and Milošević, Milena and Jevtić, Sanja and Lukić, Ivana",
year = "2022",
abstract = "Chitosan/gelatin and chitosan/gelatin/zeolite films prepared by solvent casting method were
impregnated with a mixture of thymol and carvacrol using a green solvent, supercritical carbon 
dioxide at 35 °C and 30 MPa, during 18 h. Proposed method enabled preparation of biocompatible 
and biodegradable blends with strong antioxidant and antibacterial activity, whereby amounts of 
loaded thymol/carvacrol mixture were in the range from 3.3-6%. After initial burst release, both 
types of films exhibited gradual release of bioactive compounds, with around 72 and 96% of 
impregnated thymol/carvacrol mixture released in water and PBS (pH 7.4) during tested period of 10 days, respectively. Results of water vapor transmission rate (> 76 gm-2
day-1) confirmed that prepared composites are suitable for wound dressing application. Thermal analysis showed superior properties of prepared thymol/carvacrol loaded films compared to control samples. In addition, mechanical and structural properties, as well as solubility and swelling behavior of the obtained films were investigated in detail.",
publisher = "Wiley",
journal = "Macromolecular Materials and Engineering",
title = "Zeolite/chitosan/gelatin films: preparation, supercritical CO2 processing, characterization and bioactivity",
pages = "13-1",
number = "4",
volume = "307",
doi = "10.1002/mame.202200009"
}

Pajnik, J., Dikić, J., Milovanović, S., Milošević, M., Jevtić, S.,& Lukić, I.. (2022). Zeolite/chitosan/gelatin films: preparation, supercritical CO2 processing, characterization and bioactivity. in Macromolecular Materials and Engineering
Wiley., 307(4), 1-13.
https://doi.org/10.1002/mame.202200009

Pajnik J, Dikić J, Milovanović S, Milošević M, Jevtić S, Lukić I. Zeolite/chitosan/gelatin films: preparation, supercritical CO2 processing, characterization and bioactivity. in Macromolecular Materials and Engineering. 2022;307(4):1-13.
doi:10.1002/mame.202200009 .

Pajnik, Jelena, Dikić, Jelena, Milovanović, Stoja, Milošević, Milena, Jevtić, Sanja, Lukić, Ivana, "Zeolite/chitosan/gelatin films: preparation, supercritical CO2 processing, characterization and bioactivity" in Macromolecular Materials and Engineering, 307, no. 4 (2022):1-13,
https://doi.org/10.1002/mame.202200009 . .

TY  - JOUR
AU  - Pajnik, Jelena
AU  - Dikić, Jelena
AU  - Milovanović, Stoja
AU  - Milošević, Milena
AU  - Jevtić, Sanja
AU  - Lukić, Ivana
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5086
AB  - Chitosan/gelatin and chitosan/gelatin/zeolite films prepared by solvent casting method were impregnated with a mixture of thymol and carvacrol using a green solvent, supercritical carbon dioxide at 35 °C and 30 MPa, during 18 h. Proposed method enabled preparation of biocompatible and biodegradable blends with strong antioxidant and antibacterial activity, whereby amounts of loaded thymol/carvacrol mixture were in the range from 3.3-6%. After initial burst release, both types of films exhibited gradual release of bioactive compounds, with around 72 and 96% of impregnated thymol/carvacrol mixture released in water and PBS (pH 7.4) during tested period of 10 days, respectively. Results of water vapor transmission rate (> 76 gm-2 day-1) confirmed that prepared composites are suitable for wound dressing application. Thermal analysis showed superior properties of prepared thymol/carvacrol loaded films compared to control samples. In addition, mechanical and structural properties, as well as solubility and swelling behavior of the obtained films were investigated in detail.
PB  - Wiley
T2  - Macromolecular Materials and Engineering
T1  - Zeolite/Chitosan/Gelatin Films: Preparation, SupercriticalCO2Processing, Characterization, and Bioactivity
EP  - 13
IS  - 4
SP  - 1
VL  - 307
DO  - 10.1002/mame.202200009
ER  - 

@article{
author = "Pajnik, Jelena and Dikić, Jelena and Milovanović, Stoja and Milošević, Milena and Jevtić, Sanja and Lukić, Ivana",
year = "2022",
abstract = "Chitosan/gelatin and chitosan/gelatin/zeolite films prepared by solvent casting method were impregnated with a mixture of thymol and carvacrol using a green solvent, supercritical carbon dioxide at 35 °C and 30 MPa, during 18 h. Proposed method enabled preparation of biocompatible and biodegradable blends with strong antioxidant and antibacterial activity, whereby amounts of loaded thymol/carvacrol mixture were in the range from 3.3-6%. After initial burst release, both types of films exhibited gradual release of bioactive compounds, with around 72 and 96% of impregnated thymol/carvacrol mixture released in water and PBS (pH 7.4) during tested period of 10 days, respectively. Results of water vapor transmission rate (> 76 gm-2 day-1) confirmed that prepared composites are suitable for wound dressing application. Thermal analysis showed superior properties of prepared thymol/carvacrol loaded films compared to control samples. In addition, mechanical and structural properties, as well as solubility and swelling behavior of the obtained films were investigated in detail.",
publisher = "Wiley",
journal = "Macromolecular Materials and Engineering",
title = "Zeolite/Chitosan/Gelatin Films: Preparation, SupercriticalCO2Processing, Characterization, and Bioactivity",
pages = "13-1",
number = "4",
volume = "307",
doi = "10.1002/mame.202200009"
}

Pajnik, J., Dikić, J., Milovanović, S., Milošević, M., Jevtić, S.,& Lukić, I.. (2022). Zeolite/Chitosan/Gelatin Films: Preparation, SupercriticalCO2Processing, Characterization, and Bioactivity. in Macromolecular Materials and Engineering
Wiley., 307(4), 1-13.
https://doi.org/10.1002/mame.202200009

Pajnik J, Dikić J, Milovanović S, Milošević M, Jevtić S, Lukić I. Zeolite/Chitosan/Gelatin Films: Preparation, SupercriticalCO2Processing, Characterization, and Bioactivity. in Macromolecular Materials and Engineering. 2022;307(4):1-13.
doi:10.1002/mame.202200009 .

Pajnik, Jelena, Dikić, Jelena, Milovanović, Stoja, Milošević, Milena, Jevtić, Sanja, Lukić, Ivana, "Zeolite/Chitosan/Gelatin Films: Preparation, SupercriticalCO2Processing, Characterization, and Bioactivity" in Macromolecular Materials and Engineering, 307, no. 4 (2022):1-13,
https://doi.org/10.1002/mame.202200009 . .

TY  - JOUR
AU  - Matijašević, Danka
AU  - Pantić, Milena
AU  - Stanisavljević, Nemanja
AU  - Jevtić, Sanja
AU  - Rajić, Nevenka
AU  - Lević, Steva
AU  - Nedović, Viktor
AU  - Nikšić, Miomir
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5115
AB  - Research background. In the recent years, considerable attention has been given to selenium status since its deficiency is linked with various disorders and affects at least 13 % of world population. Additionally, mushrooms are known to possess pronounced capacity for absorption of various micronutrients, including Se, from soil/substrate. Here, we investigate the possibility of using Se-rich zeolitic tuff as a supplement for production of selenized mushroom. Furthermore, the impact of the enrichment on the activity of anti-oxidant enzymes and biological potential of Coriolus versicolor medicinal mushroom is studied. Experimental approach. Se(IV)-and Se(VI)-modified natural zeolitic tuff from the Ser-bian deposit Zlatokop was used as supplement for mushroom cultivation. To examine the effectiveness of selenium enrichment, we determined total selenium with inductively coupled plasma mass spectrometry (ICP-MS), together with the activity of antioxidant enzymes in fresh fruiting bodies and biological potential of methanolic extracts. Antioxidant activity was evaluated using the appropriate tests for: inhibition of lipid peroxidation, DPPH free radical scavenging assay, Fe(III)-reducing antioxidant power assay and ability of chelating Fe2+ ions. The antibacterial activity against foodborne pathogens was measured by broth microdilution assay. Additionally, chemical composition of the prepared extracts was studied using UV-Vis and Fourier transform infrared (FTIR) spectroscopy. Results and conclusions. Content of selenium detected in biofortified C. versicolor was even 470 times higher than in control on dry mass basis ((140.7±3.8) vs (0.3±0.1) µg/g), proving that Se-rich zeolitic tuff is an excellent supplement for mushroom production. Furthermore, the results of monitoring the activity of antioxidant enzymes revealed that most of the Se-enriched mushrooms exhibited higher superoxide dismutase (SOD) and catalase (CAT) and lower glutathione peroxidase (GSH-Px) activities than control. Due to higher amounts of enzymes, which can quickly catalyze the reduction of superoxide radicals, the quality of selenium-enriched mushrooms is preserved for a longer period of time. Investigation of biological potential indicated that Se-enriched mushroom methanolic extracts, generally, expressed enhanced antioxidant properties. Additionally, extracts showed antibacterial activity against all tested pathogenic microorganisms. Novelty and scientific contribution. Cultivation of mushrooms on Se-enriched zeolitic tuff is a new technological approach for obtaining Se-fortified food/supplements with enhanced antioxidant and antibacterial activities.
PB  - University of Zagreb
T2  - Food Technology and Biotechnology
T1  - Coriolus versicolor Mushroom Grown on Selenium-Rich Zeolitic Tuff as a Potential Novel Food Supplement
EP  - 79
IS  - 1
SP  - 67
VL  - 60
DO  - 10.17113/ftb.60.01.22.7172
ER  - 

@article{
author = "Matijašević, Danka and Pantić, Milena and Stanisavljević, Nemanja and Jevtić, Sanja and Rajić, Nevenka and Lević, Steva and Nedović, Viktor and Nikšić, Miomir",
year = "2022",
abstract = "Research background. In the recent years, considerable attention has been given to selenium status since its deficiency is linked with various disorders and affects at least 13 % of world population. Additionally, mushrooms are known to possess pronounced capacity for absorption of various micronutrients, including Se, from soil/substrate. Here, we investigate the possibility of using Se-rich zeolitic tuff as a supplement for production of selenized mushroom. Furthermore, the impact of the enrichment on the activity of anti-oxidant enzymes and biological potential of Coriolus versicolor medicinal mushroom is studied. Experimental approach. Se(IV)-and Se(VI)-modified natural zeolitic tuff from the Ser-bian deposit Zlatokop was used as supplement for mushroom cultivation. To examine the effectiveness of selenium enrichment, we determined total selenium with inductively coupled plasma mass spectrometry (ICP-MS), together with the activity of antioxidant enzymes in fresh fruiting bodies and biological potential of methanolic extracts. Antioxidant activity was evaluated using the appropriate tests for: inhibition of lipid peroxidation, DPPH free radical scavenging assay, Fe(III)-reducing antioxidant power assay and ability of chelating Fe2+ ions. The antibacterial activity against foodborne pathogens was measured by broth microdilution assay. Additionally, chemical composition of the prepared extracts was studied using UV-Vis and Fourier transform infrared (FTIR) spectroscopy. Results and conclusions. Content of selenium detected in biofortified C. versicolor was even 470 times higher than in control on dry mass basis ((140.7±3.8) vs (0.3±0.1) µg/g), proving that Se-rich zeolitic tuff is an excellent supplement for mushroom production. Furthermore, the results of monitoring the activity of antioxidant enzymes revealed that most of the Se-enriched mushrooms exhibited higher superoxide dismutase (SOD) and catalase (CAT) and lower glutathione peroxidase (GSH-Px) activities than control. Due to higher amounts of enzymes, which can quickly catalyze the reduction of superoxide radicals, the quality of selenium-enriched mushrooms is preserved for a longer period of time. Investigation of biological potential indicated that Se-enriched mushroom methanolic extracts, generally, expressed enhanced antioxidant properties. Additionally, extracts showed antibacterial activity against all tested pathogenic microorganisms. Novelty and scientific contribution. Cultivation of mushrooms on Se-enriched zeolitic tuff is a new technological approach for obtaining Se-fortified food/supplements with enhanced antioxidant and antibacterial activities.",
publisher = "University of Zagreb",
journal = "Food Technology and Biotechnology",
title = "Coriolus versicolor Mushroom Grown on Selenium-Rich Zeolitic Tuff as a Potential Novel Food Supplement",
pages = "79-67",
number = "1",
volume = "60",
doi = "10.17113/ftb.60.01.22.7172"
}

Matijašević, D., Pantić, M., Stanisavljević, N., Jevtić, S., Rajić, N., Lević, S., Nedović, V.,& Nikšić, M.. (2022). Coriolus versicolor Mushroom Grown on Selenium-Rich Zeolitic Tuff as a Potential Novel Food Supplement. in Food Technology and Biotechnology
University of Zagreb., 60(1), 67-79.
https://doi.org/10.17113/ftb.60.01.22.7172

Matijašević D, Pantić M, Stanisavljević N, Jevtić S, Rajić N, Lević S, Nedović V, Nikšić M. Coriolus versicolor Mushroom Grown on Selenium-Rich Zeolitic Tuff as a Potential Novel Food Supplement. in Food Technology and Biotechnology. 2022;60(1):67-79.
doi:10.17113/ftb.60.01.22.7172 .

Matijašević, Danka, Pantić, Milena, Stanisavljević, Nemanja, Jevtić, Sanja, Rajić, Nevenka, Lević, Steva, Nedović, Viktor, Nikšić, Miomir, "Coriolus versicolor Mushroom Grown on Selenium-Rich Zeolitic Tuff as a Potential Novel Food Supplement" in Food Technology and Biotechnology, 60, no. 1 (2022):67-79,
https://doi.org/10.17113/ftb.60.01.22.7172 . .

TY  - JOUR
AU  - Ponjavic, Marijana
AU  - Jevtić, Sanja
AU  - Nikolić, Marija S.
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5168
AB  - In order to obtain polymers with preserved thermal properties and tunable biodegradability multiblock copolymers comprising blocks of biodegradable polyesters poly(ε-caprolactone) (PCL) and poly(butylene succinate) (PBS) were successfully synthesized through chain-extension reaction using hexamethylene diisocyanate. Two series of copolymers with different length of PCL block and varying ratio of PCL and PBS block through each series were synthesized. PCL-b-PBS copolymers were characterized by NMR, FTIR, WAXS, DSC, TG and DMA in solid state. Special attention was given to the investigation of the influence of composition and structure of multiblock copolymers on their biodegradability properties. Biodegradability of these multiblock copolymers was assessed through hydrolysis in alkaline medium and soil burial test. Each block in multiblock copolymers crystallized separately, with adverse influence of its presence on degree of crystallinity and, in much lesser extent, on melting temperature of the second phase. Multiblock copolymers showed high thermal stability, comparable to corresponding homopolymers. Mechanical strength, deduced from storage modulus in glassy and rubbery state, was a firm function of composition. Copolymers rich in PBS were more prone to degradation through simple hydrolysis in alkaline medium, while PCL-rich copolymers were more susceptible to degradation by soil microorganisms. Through the change in copolymer composition, degradability in different environments could be tailored without compromising materials’ thermal properties. Besides composition, molecular weight of copolymers had the major influence on degradability properties.
PB  - Springer Science and Business Media B.V.
T2  - Journal of Polymer Research
T1  - Multiblock copolymers containing poly(butylene succinate) and poly(ε-caprolactone) blocks: Effect of block ratio and length on physical properties and biodegradability
IS  - 7
SP  - 295
VL  - 29
DO  - 10.1007/s10965-022-03144-w
ER  - 

@article{
author = "Ponjavic, Marijana and Jevtić, Sanja and Nikolić, Marija S.",
year = "2022",
abstract = "In order to obtain polymers with preserved thermal properties and tunable biodegradability multiblock copolymers comprising blocks of biodegradable polyesters poly(ε-caprolactone) (PCL) and poly(butylene succinate) (PBS) were successfully synthesized through chain-extension reaction using hexamethylene diisocyanate. Two series of copolymers with different length of PCL block and varying ratio of PCL and PBS block through each series were synthesized. PCL-b-PBS copolymers were characterized by NMR, FTIR, WAXS, DSC, TG and DMA in solid state. Special attention was given to the investigation of the influence of composition and structure of multiblock copolymers on their biodegradability properties. Biodegradability of these multiblock copolymers was assessed through hydrolysis in alkaline medium and soil burial test. Each block in multiblock copolymers crystallized separately, with adverse influence of its presence on degree of crystallinity and, in much lesser extent, on melting temperature of the second phase. Multiblock copolymers showed high thermal stability, comparable to corresponding homopolymers. Mechanical strength, deduced from storage modulus in glassy and rubbery state, was a firm function of composition. Copolymers rich in PBS were more prone to degradation through simple hydrolysis in alkaline medium, while PCL-rich copolymers were more susceptible to degradation by soil microorganisms. Through the change in copolymer composition, degradability in different environments could be tailored without compromising materials’ thermal properties. Besides composition, molecular weight of copolymers had the major influence on degradability properties.",
publisher = "Springer Science and Business Media B.V.",
journal = "Journal of Polymer Research",
title = "Multiblock copolymers containing poly(butylene succinate) and poly(ε-caprolactone) blocks: Effect of block ratio and length on physical properties and biodegradability",
number = "7",
pages = "295",
volume = "29",
doi = "10.1007/s10965-022-03144-w"
}

Ponjavic, M., Jevtić, S.,& Nikolić, M. S.. (2022). Multiblock copolymers containing poly(butylene succinate) and poly(ε-caprolactone) blocks: Effect of block ratio and length on physical properties and biodegradability. in Journal of Polymer Research
Springer Science and Business Media B.V.., 29(7), 295.
https://doi.org/10.1007/s10965-022-03144-w

Ponjavic M, Jevtić S, Nikolić MS. Multiblock copolymers containing poly(butylene succinate) and poly(ε-caprolactone) blocks: Effect of block ratio and length on physical properties and biodegradability. in Journal of Polymer Research. 2022;29(7):295.
doi:10.1007/s10965-022-03144-w .

Ponjavic, Marijana, Jevtić, Sanja, Nikolić, Marija S., "Multiblock copolymers containing poly(butylene succinate) and poly(ε-caprolactone) blocks: Effect of block ratio and length on physical properties and biodegradability" in Journal of Polymer Research, 29, no. 7 (2022):295,
https://doi.org/10.1007/s10965-022-03144-w . .

TY  - JOUR
AU  - Nikolić, Vesna
AU  - Đokić, Jovana
AU  - Kamberović, Željko
AU  - Marinković, Aleksandar
AU  - Jevtić, Sanja
AU  - Anđić, Zoran
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5192
AB  - The aim of this study was to investigate a possibility of synthesis of porous ceramics with controlled open porosity, which could be used as sorbents and catalyst supports. Two organic additives were used to obtain open porosity: polystyrene beads and cellulose fibers, which are mixed with kaolin clay powder and the appropriate water content. Samples were sintered at 1050 oC for 1 h. Characterization of the obtained products included X-ray powder diffraction analysis (XRPD), Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), thermogravimetric analysis (TGA) and elemental CHNS analysis. In addition, porosity was examined by quantification of visual information. The specific surface areas were determined by the Brunauer–Emmett–Teller (BET) method. Also, density and compressive strength of the obtained samples were assessed. It was determined that by sintering, the organic component completely leaves the system. For samples prepared with polystyrene beads and with cellulose fibers, satisfactory mechanical properties were obtained: compressive strengths were 1.42 and 1.56 MPa, respectively. It was noted that significantly higher open porosity was obtained by using polystyrene beads as a sacrificial template (porosity of ~56 %) instead of cellulose fibers (porosity of ~6 %).
T2  - Hemijska industrija
T1  - Investigating possibilities for synthesis of novel sorbents and catalyst carriers based on ceramics with controlled open porosity
T1  - Ispitivanje mogućnosti sinteze inovativnih sorbenata i nosača katalizatora na bazi keramike kontrolisane otvorene poroznosti
EP  - 95
IS  - 2
SP  - 87
VL  - 76
DO  - 10.2298/HEMIND210809005N
ER  - 

@article{
author = "Nikolić, Vesna and Đokić, Jovana and Kamberović, Željko and Marinković, Aleksandar and Jevtić, Sanja and Anđić, Zoran",
year = "2022",
abstract = "The aim of this study was to investigate a possibility of synthesis of porous ceramics with controlled open porosity, which could be used as sorbents and catalyst supports. Two organic additives were used to obtain open porosity: polystyrene beads and cellulose fibers, which are mixed with kaolin clay powder and the appropriate water content. Samples were sintered at 1050 oC for 1 h. Characterization of the obtained products included X-ray powder diffraction analysis (XRPD), Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), thermogravimetric analysis (TGA) and elemental CHNS analysis. In addition, porosity was examined by quantification of visual information. The specific surface areas were determined by the Brunauer–Emmett–Teller (BET) method. Also, density and compressive strength of the obtained samples were assessed. It was determined that by sintering, the organic component completely leaves the system. For samples prepared with polystyrene beads and with cellulose fibers, satisfactory mechanical properties were obtained: compressive strengths were 1.42 and 1.56 MPa, respectively. It was noted that significantly higher open porosity was obtained by using polystyrene beads as a sacrificial template (porosity of ~56 %) instead of cellulose fibers (porosity of ~6 %).",
journal = "Hemijska industrija",
title = "Investigating possibilities for synthesis of novel sorbents and catalyst carriers based on ceramics with controlled open porosity, Ispitivanje mogućnosti sinteze inovativnih sorbenata i nosača katalizatora na bazi keramike kontrolisane otvorene poroznosti",
pages = "95-87",
number = "2",
volume = "76",
doi = "10.2298/HEMIND210809005N"
}

Nikolić, V., Đokić, J., Kamberović, Ž., Marinković, A., Jevtić, S.,& Anđić, Z.. (2022). Investigating possibilities for synthesis of novel sorbents and catalyst carriers based on ceramics with controlled open porosity. in Hemijska industrija, 76(2), 87-95.
https://doi.org/10.2298/HEMIND210809005N

Nikolić V, Đokić J, Kamberović Ž, Marinković A, Jevtić S, Anđić Z. Investigating possibilities for synthesis of novel sorbents and catalyst carriers based on ceramics with controlled open porosity. in Hemijska industrija. 2022;76(2):87-95.
doi:10.2298/HEMIND210809005N .

Nikolić, Vesna, Đokić, Jovana, Kamberović, Željko, Marinković, Aleksandar, Jevtić, Sanja, Anđić, Zoran, "Investigating possibilities for synthesis of novel sorbents and catalyst carriers based on ceramics with controlled open porosity" in Hemijska industrija, 76, no. 2 (2022):87-95,
https://doi.org/10.2298/HEMIND210809005N . .

TY  - JOUR
AU  - Ponjavić, Marijana
AU  - Nikolić, Marija S.
AU  - Jevtić, Sanja
AU  - Jeremić, Sanja
AU  - Đokić, Lidija
AU  - Đonlagić, Jasna
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5233
AB  - The present study reports the potential application of star-shaped poly(ε-caprolactones) with different number of arms as new drug delivery matrix. Linear and star-shaped PCL ibuprofen loaded microspheres were prepared using oil-in-water (o/w) solvent evaporation technique and characterized with FTIR, DSC, XRD and SEM analysis. High yield, encapsulation efficiency and drug loadings were obtained for all microspheres. FTIR analysis revealed the existence of interactions between polymer matrix and drug, while the DSC analysis suggested that drug was encapsulated in an amorphous form. SEM analysis confirmed that regular, spherical in shape star-shaped microspheres, with diameter between 80 and 90 μm, were obtained, while quite larger microspheres, 110 μm, were prepared from linear PCL. The advantage of using star-shaped PCL microspheres instead of linear PCL was seen from drug release profiles which demonstrated higher amount of drug released from star-shaped polymer matrix as a consequence of their branched, flexible structure. Microspheres prepared from the polymers with the most branched structure showed the highest amount of the released drug after 24 h. Finally, cytotoxicity tests, performed using normal human fibroblasts (MRC5), indicated the absence of cytotoxicity at lower concentrations of microspheres proving the great potential of star-shaped PCL systems in comparison to linear ones.
PB  - Serbian Chemical Society
T2  - Journal of the Serbian Chemical Society
T1  - Star-shaped poly(ε-caprolactones) with well-defined architecture as potential drug carriers
T1  - РАЗГРАНАТИ ПОЛИ(ε-КАПРОЛАКТОНИ) СА ДОБРО ОДРЕЂЕНОМ АРХИТЕКТУРОМ КАО ПОТЕНЦИЈАЛНИ НОСАЧИ ЛЕКОВА
EP  - 1090
IS  - 9
SP  - 1075
VL  - 87
DO  - 10.2298/JSC220202032P
ER  - 

@article{
author = "Ponjavić, Marijana and Nikolić, Marija S. and Jevtić, Sanja and Jeremić, Sanja and Đokić, Lidija and Đonlagić, Jasna",
year = "2022",
abstract = "The present study reports the potential application of star-shaped poly(ε-caprolactones) with different number of arms as new drug delivery matrix. Linear and star-shaped PCL ibuprofen loaded microspheres were prepared using oil-in-water (o/w) solvent evaporation technique and characterized with FTIR, DSC, XRD and SEM analysis. High yield, encapsulation efficiency and drug loadings were obtained for all microspheres. FTIR analysis revealed the existence of interactions between polymer matrix and drug, while the DSC analysis suggested that drug was encapsulated in an amorphous form. SEM analysis confirmed that regular, spherical in shape star-shaped microspheres, with diameter between 80 and 90 μm, were obtained, while quite larger microspheres, 110 μm, were prepared from linear PCL. The advantage of using star-shaped PCL microspheres instead of linear PCL was seen from drug release profiles which demonstrated higher amount of drug released from star-shaped polymer matrix as a consequence of their branched, flexible structure. Microspheres prepared from the polymers with the most branched structure showed the highest amount of the released drug after 24 h. Finally, cytotoxicity tests, performed using normal human fibroblasts (MRC5), indicated the absence of cytotoxicity at lower concentrations of microspheres proving the great potential of star-shaped PCL systems in comparison to linear ones.",
publisher = "Serbian Chemical Society",
journal = "Journal of the Serbian Chemical Society",
title = "Star-shaped poly(ε-caprolactones) with well-defined architecture as potential drug carriers, РАЗГРАНАТИ ПОЛИ(ε-КАПРОЛАКТОНИ) СА ДОБРО ОДРЕЂЕНОМ АРХИТЕКТУРОМ КАО ПОТЕНЦИЈАЛНИ НОСАЧИ ЛЕКОВА",
pages = "1090-1075",
number = "9",
volume = "87",
doi = "10.2298/JSC220202032P"
}

Ponjavić, M., Nikolić, M. S., Jevtić, S., Jeremić, S., Đokić, L.,& Đonlagić, J.. (2022). Star-shaped poly(ε-caprolactones) with well-defined architecture as potential drug carriers. in Journal of the Serbian Chemical Society
Serbian Chemical Society., 87(9), 1075-1090.
https://doi.org/10.2298/JSC220202032P

Ponjavić M, Nikolić MS, Jevtić S, Jeremić S, Đokić L, Đonlagić J. Star-shaped poly(ε-caprolactones) with well-defined architecture as potential drug carriers. in Journal of the Serbian Chemical Society. 2022;87(9):1075-1090.
doi:10.2298/JSC220202032P .

Ponjavić, Marijana, Nikolić, Marija S., Jevtić, Sanja, Jeremić, Sanja, Đokić, Lidija, Đonlagić, Jasna, "Star-shaped poly(ε-caprolactones) with well-defined architecture as potential drug carriers" in Journal of the Serbian Chemical Society, 87, no. 9 (2022):1075-1090,
https://doi.org/10.2298/JSC220202032P . .

TY  - JOUR
AU  - Topalović, Vladimir
AU  - Nikolić, Jelena
AU  - Matijašević, Srđan
AU  - Stojanović, Jovica
AU  - Karamanov, Alexander
AU  - Grujić, Snežana
AU  - Jevtić, Sanja
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5272
AB  - The goal of this research is to investigate the effect of SrO and La2O3 addition on the crystallization characteristics and sintering behavior of polyphosphate glasses. Differential scanning calorimetry (DSC), hot stage microscopy (HSM), X-ray diffraction (XRD), and scanning electron microscopy (SEM) methods were used to investigate the crystallization and sintering behaviors of glasses. The addition of SrO and La2O3 (1 or 5%), at the expense of phosphate mole fraction in polyphosphate bioactive glass, raises the characteristic temperature of glasses, and resistance to crystallization. Furthermore, the temperature of maximal shrinkage increases with the addition of SrO and La2O3. Surface crystallization is the dominant mechanism of crystallization in all samples. All glasses show complex crystallization leading to the formation of several crystalline phases. Sintered phosphate glass–ceramic containing bioactive β-CaP2O6, α-Ca3(PO4)2, and β-Ca3(PO4)2 phases were successfully prepared.
PB  - Springer Science and Business Media B.V.
T2  - Journal of Thermal Analysis and Calorimetry
T1  - The effect of SrO and La2O3 addition on the crystallization characteristics and sintering behavior of distinct polyphosphate glasses
DO  - 10.1007/s10973-022-11777-8
ER  - 

@article{
author = "Topalović, Vladimir and Nikolić, Jelena and Matijašević, Srđan and Stojanović, Jovica and Karamanov, Alexander and Grujić, Snežana and Jevtić, Sanja",
year = "2022",
abstract = "The goal of this research is to investigate the effect of SrO and La2O3 addition on the crystallization characteristics and sintering behavior of polyphosphate glasses. Differential scanning calorimetry (DSC), hot stage microscopy (HSM), X-ray diffraction (XRD), and scanning electron microscopy (SEM) methods were used to investigate the crystallization and sintering behaviors of glasses. The addition of SrO and La2O3 (1 or 5%), at the expense of phosphate mole fraction in polyphosphate bioactive glass, raises the characteristic temperature of glasses, and resistance to crystallization. Furthermore, the temperature of maximal shrinkage increases with the addition of SrO and La2O3. Surface crystallization is the dominant mechanism of crystallization in all samples. All glasses show complex crystallization leading to the formation of several crystalline phases. Sintered phosphate glass–ceramic containing bioactive β-CaP2O6, α-Ca3(PO4)2, and β-Ca3(PO4)2 phases were successfully prepared.",
publisher = "Springer Science and Business Media B.V.",
journal = "Journal of Thermal Analysis and Calorimetry",
title = "The effect of SrO and La2O3 addition on the crystallization characteristics and sintering behavior of distinct polyphosphate glasses",
doi = "10.1007/s10973-022-11777-8"
}

Topalović, V., Nikolić, J., Matijašević, S., Stojanović, J., Karamanov, A., Grujić, S.,& Jevtić, S.. (2022). The effect of SrO and La2O3 addition on the crystallization characteristics and sintering behavior of distinct polyphosphate glasses. in Journal of Thermal Analysis and Calorimetry
Springer Science and Business Media B.V...
https://doi.org/10.1007/s10973-022-11777-8

Topalović V, Nikolić J, Matijašević S, Stojanović J, Karamanov A, Grujić S, Jevtić S. The effect of SrO and La2O3 addition on the crystallization characteristics and sintering behavior of distinct polyphosphate glasses. in Journal of Thermal Analysis and Calorimetry. 2022;.
doi:10.1007/s10973-022-11777-8 .

Topalović, Vladimir, Nikolić, Jelena, Matijašević, Srđan, Stojanović, Jovica, Karamanov, Alexander, Grujić, Snežana, Jevtić, Sanja, "The effect of SrO and La2O3 addition on the crystallization characteristics and sintering behavior of distinct polyphosphate glasses" in Journal of Thermal Analysis and Calorimetry (2022),
https://doi.org/10.1007/s10973-022-11777-8 . .

TY  - JOUR
AU  - Kamberović, Željko
AU  - Gajić, Nataša
AU  - Korać, Marija
AU  - Jevtić, Sanja
AU  - Sokić, Miroslav
AU  - Stojanovic, Jovica
PY  - 2021
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4900
AB  - By-products from zinc hydrometallurgy are classified as hazardous waste with strong leaching toxicities. Even though numerous research papers are dedicated to valorizing valuable metals in it, the primary management route is still disposal or partial reuse, such as the Waelz process. Presented experimental research investigates possibilities of sulfidization and further processing as a technologically sustainable route for valuable metals valorization from non-standard jarosite-PbAg sludge. The comprehensive thermodynamic analysis was done by HSC Chemistry(R), through optimizing process parameters, i.e., temperature, sulfur addition, and selection of possible additives. Technological possibility of magnetic separation, flotation, and smelting of sulfidized material was also investigated; the results were below the values that allow practical application, due to the obtained texture of sulfidized jarosite, which does not allow the liberation of minerals. Smelting tests were performed on sulfidized jarosite with sulfur and without and with carbon as additive. By smelting sulfidized jarosite-PbAg sludge with added carbon in sulfidization stage at 1375 degrees C, obtained products were matte, slag, raw lead, and dust in which base, critical, and slag forming components were valorized. Valuable metals were concentrated in smelting products so as to enable further processing, which also could be interesting in the case of treatment of complex, polymetallic, and refractory primary materials, which represent a significant contribution to the circular economy.
T2  - Minerals
T1  - Technologically Sustainable Route for Metals Valorization from Jarosite-PbAg Sludge
IS  - 3
VL  - 11
DO  - 10.3390/min11030255
ER  - 

@article{
author = "Kamberović, Željko and Gajić, Nataša and Korać, Marija and Jevtić, Sanja and Sokić, Miroslav and Stojanovic, Jovica",
year = "2021",
abstract = "By-products from zinc hydrometallurgy are classified as hazardous waste with strong leaching toxicities. Even though numerous research papers are dedicated to valorizing valuable metals in it, the primary management route is still disposal or partial reuse, such as the Waelz process. Presented experimental research investigates possibilities of sulfidization and further processing as a technologically sustainable route for valuable metals valorization from non-standard jarosite-PbAg sludge. The comprehensive thermodynamic analysis was done by HSC Chemistry(R), through optimizing process parameters, i.e., temperature, sulfur addition, and selection of possible additives. Technological possibility of magnetic separation, flotation, and smelting of sulfidized material was also investigated; the results were below the values that allow practical application, due to the obtained texture of sulfidized jarosite, which does not allow the liberation of minerals. Smelting tests were performed on sulfidized jarosite with sulfur and without and with carbon as additive. By smelting sulfidized jarosite-PbAg sludge with added carbon in sulfidization stage at 1375 degrees C, obtained products were matte, slag, raw lead, and dust in which base, critical, and slag forming components were valorized. Valuable metals were concentrated in smelting products so as to enable further processing, which also could be interesting in the case of treatment of complex, polymetallic, and refractory primary materials, which represent a significant contribution to the circular economy.",
journal = "Minerals",
title = "Technologically Sustainable Route for Metals Valorization from Jarosite-PbAg Sludge",
number = "3",
volume = "11",
doi = "10.3390/min11030255"
}

Kamberović, Ž., Gajić, N., Korać, M., Jevtić, S., Sokić, M.,& Stojanovic, J.. (2021). Technologically Sustainable Route for Metals Valorization from Jarosite-PbAg Sludge. in Minerals, 11(3).
https://doi.org/10.3390/min11030255

Kamberović Ž, Gajić N, Korać M, Jevtić S, Sokić M, Stojanovic J. Technologically Sustainable Route for Metals Valorization from Jarosite-PbAg Sludge. in Minerals. 2021;11(3).
doi:10.3390/min11030255 .

Kamberović, Željko, Gajić, Nataša, Korać, Marija, Jevtić, Sanja, Sokić, Miroslav, Stojanovic, Jovica, "Technologically Sustainable Route for Metals Valorization from Jarosite-PbAg Sludge" in Minerals, 11, no. 3 (2021),
https://doi.org/10.3390/min11030255 . .

TY  - CONF
AU  - Dimitrijević, Jelena
AU  - Petrović, Jelena
AU  - Milošević, Dragana
AU  - Dikić, Jelena
AU  - Jevtić, Sanja
PY  - 2021
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6479
AB  - Silanization of the natural and synthetic zeolites as well as their use as adsorbents for removing arsenic(III) oxyanions from wastewater are the topic of this paper. Two types of zeolite were used: natural zeolite-clinoptilolite from Zlatokop deposit, Vranjska Banja, Serbia, previously converted to H+-form and synthetic zeolite, mordenite. The modification was performed with solution (3-aminopropyl) triethoxysilane (APTES). The presence of APTES on the surface of zeolite was confirmed using TG/DSC and FTIR analysis. The results showed that natural aminosilane-modified zeolite has a higher adsorption capacity for arsenic(III) oxyanions compared to mordenite prepared in the same way. The kinetic data follow the Lagergren pseudo-second-order model. This model implies a chemical interaction between AsO33–- ions and functional groups on the silanized zeolite surface.
PB  - Croatia : Croatian Zeolites Association
C3  - Proceedings of the 9th Croatian-Slovenian-Serbian Symposium on Zeolites
T1  - Removal of arsenic(III) oxyanions from wastewater using aminosilane -modified natural and synthetic zeolite
EP  - 50
SP  - 47
UR  - https://hdl.handle.net/21.15107/rcub_cer_4893
ER  - 

@conference{
author = "Dimitrijević, Jelena and Petrović, Jelena and Milošević, Dragana and Dikić, Jelena and Jevtić, Sanja",
year = "2021",
abstract = "Silanization of the natural and synthetic zeolites as well as their use as adsorbents for removing arsenic(III) oxyanions from wastewater are the topic of this paper. Two types of zeolite were used: natural zeolite-clinoptilolite from Zlatokop deposit, Vranjska Banja, Serbia, previously converted to H+-form and synthetic zeolite, mordenite. The modification was performed with solution (3-aminopropyl) triethoxysilane (APTES). The presence of APTES on the surface of zeolite was confirmed using TG/DSC and FTIR analysis. The results showed that natural aminosilane-modified zeolite has a higher adsorption capacity for arsenic(III) oxyanions compared to mordenite prepared in the same way. The kinetic data follow the Lagergren pseudo-second-order model. This model implies a chemical interaction between AsO33–- ions and functional groups on the silanized zeolite surface.",
publisher = "Croatia : Croatian Zeolites Association",
journal = "Proceedings of the 9th Croatian-Slovenian-Serbian Symposium on Zeolites",
title = "Removal of arsenic(III) oxyanions from wastewater using aminosilane -modified natural and synthetic zeolite",
pages = "50-47",
url = "https://hdl.handle.net/21.15107/rcub_cer_4893"
}

Dimitrijević, J., Petrović, J., Milošević, D., Dikić, J.,& Jevtić, S.. (2021). Removal of arsenic(III) oxyanions from wastewater using aminosilane -modified natural and synthetic zeolite. in Proceedings of the 9th Croatian-Slovenian-Serbian Symposium on Zeolites
Croatia : Croatian Zeolites Association., 47-50.
https://hdl.handle.net/21.15107/rcub_cer_4893

Dimitrijević J, Petrović J, Milošević D, Dikić J, Jevtić S. Removal of arsenic(III) oxyanions from wastewater using aminosilane -modified natural and synthetic zeolite. in Proceedings of the 9th Croatian-Slovenian-Serbian Symposium on Zeolites. 2021;:47-50.
https://hdl.handle.net/21.15107/rcub_cer_4893 .

Dimitrijević, Jelena, Petrović, Jelena, Milošević, Dragana, Dikić, Jelena, Jevtić, Sanja, "Removal of arsenic(III) oxyanions from wastewater using aminosilane -modified natural and synthetic zeolite" in Proceedings of the 9th Croatian-Slovenian-Serbian Symposium on Zeolites (2021):47-50,
https://hdl.handle.net/21.15107/rcub_cer_4893 .

TY  - JOUR
AU  - Zvicer, Jovana
AU  - Medić, Ana
AU  - Veljović, Đorđe
AU  - Jevtić, Sanja
AU  - Novak, Sasa
AU  - Obradović, Bojana
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4051
AB  - The authors regret that Figures 4 and 5 in the above manuscript were exchanged. The authors would like to apologise for any inconvenience caused.
PB  - Elsevier Sci Ltd, Oxford
T2  - Polymer Testing
T1  - Biomimetic characterization reveals enhancement of hydroxyapatite formation by fluid flow in gellan gum and bioactive glass composite scaffolds (vol 76, pg 464, 2019)
SP  - 105908
VL  - 77
DO  - 10.1016/j.polymertesting.2019.105908
ER  - 

@article{
author = "Zvicer, Jovana and Medić, Ana and Veljović, Đorđe and Jevtić, Sanja and Novak, Sasa and Obradović, Bojana",
year = "2019",
abstract = "The authors regret that Figures 4 and 5 in the above manuscript were exchanged. The authors would like to apologise for any inconvenience caused.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Polymer Testing",
title = "Biomimetic characterization reveals enhancement of hydroxyapatite formation by fluid flow in gellan gum and bioactive glass composite scaffolds (vol 76, pg 464, 2019)",
pages = "105908",
volume = "77",
doi = "10.1016/j.polymertesting.2019.105908"
}

Zvicer, J., Medić, A., Veljović, Đ., Jevtić, S., Novak, S.,& Obradović, B.. (2019). Biomimetic characterization reveals enhancement of hydroxyapatite formation by fluid flow in gellan gum and bioactive glass composite scaffolds (vol 76, pg 464, 2019). in Polymer Testing
Elsevier Sci Ltd, Oxford., 77, 105908.
https://doi.org/10.1016/j.polymertesting.2019.105908

Zvicer J, Medić A, Veljović Đ, Jevtić S, Novak S, Obradović B. Biomimetic characterization reveals enhancement of hydroxyapatite formation by fluid flow in gellan gum and bioactive glass composite scaffolds (vol 76, pg 464, 2019). in Polymer Testing. 2019;77:105908.
doi:10.1016/j.polymertesting.2019.105908 .

Zvicer, Jovana, Medić, Ana, Veljović, Đorđe, Jevtić, Sanja, Novak, Sasa, Obradović, Bojana, "Biomimetic characterization reveals enhancement of hydroxyapatite formation by fluid flow in gellan gum and bioactive glass composite scaffolds (vol 76, pg 464, 2019)" in Polymer Testing, 77 (2019):105908,
https://doi.org/10.1016/j.polymertesting.2019.105908 . .

TY  - JOUR
AU  - Zvicer, Jovana
AU  - Medić, Ana
AU  - Veljović, Đorđe
AU  - Jevtić, Sanja
AU  - Novak, Sasa
AU  - Obradović, Bojana
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4090
AB  - This study presents production and biomimetic characterization of macroporous composite scaffolds based on gellan gum and nanoparticulate bioactive glass (GG-BAG) under conditions relevant for bone tissue engineering. Formation of hydroxyapatite (HAp) within the scaffolds was investigated in the simulated body fluid (SBF) during 14 days in two biomimetic bioreactors: perfusion bioreactor (1.1 ml/min SBF flowrate) and a bioreactor with coupled dynamic compression and SBF perfusion (5% strain, 0.68 Hz, 1 h on/1 h off, 1.1 ml/min SBF flowrate). HAp formation was evaluated by scanning electron microscopy (FE-SEM), energy dispersive X-ray (EDS) analysis, Fourier transform infrared spectroscopy (FTIR), and X-ray powder diffraction (XRPD). The superficial SBF velocity of 100 mu m/s in perfusion bioreactors induced the formation of abundant cauliflower-like HAp crystals throughout the scaffold interior and flake-like crystals on external surfaces resulting in improved mechanical properties as compared to the initial scaffolds. The obtained results indicate potentials of macro-porous GG-BAG scaffolds in conjunction with perfusion bioreactors for bone tissue engineering demonstrating high bioactivity suited for cultures of osteogenic cells.
PB  - Elsevier Sci Ltd, Oxford
T2  - Polymer Testing
T1  - Biomimetic characterization reveals enhancement of hydroxyapatite formation by fluid flow in gellan gum and bioactive glass composite scaffolds
EP  - 472
SP  - 464
VL  - 76
DO  - 10.1016/j.polymertesting.2019.04.004
ER  - 

@article{
author = "Zvicer, Jovana and Medić, Ana and Veljović, Đorđe and Jevtić, Sanja and Novak, Sasa and Obradović, Bojana",
year = "2019",
abstract = "This study presents production and biomimetic characterization of macroporous composite scaffolds based on gellan gum and nanoparticulate bioactive glass (GG-BAG) under conditions relevant for bone tissue engineering. Formation of hydroxyapatite (HAp) within the scaffolds was investigated in the simulated body fluid (SBF) during 14 days in two biomimetic bioreactors: perfusion bioreactor (1.1 ml/min SBF flowrate) and a bioreactor with coupled dynamic compression and SBF perfusion (5% strain, 0.68 Hz, 1 h on/1 h off, 1.1 ml/min SBF flowrate). HAp formation was evaluated by scanning electron microscopy (FE-SEM), energy dispersive X-ray (EDS) analysis, Fourier transform infrared spectroscopy (FTIR), and X-ray powder diffraction (XRPD). The superficial SBF velocity of 100 mu m/s in perfusion bioreactors induced the formation of abundant cauliflower-like HAp crystals throughout the scaffold interior and flake-like crystals on external surfaces resulting in improved mechanical properties as compared to the initial scaffolds. The obtained results indicate potentials of macro-porous GG-BAG scaffolds in conjunction with perfusion bioreactors for bone tissue engineering demonstrating high bioactivity suited for cultures of osteogenic cells.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Polymer Testing",
title = "Biomimetic characterization reveals enhancement of hydroxyapatite formation by fluid flow in gellan gum and bioactive glass composite scaffolds",
pages = "472-464",
volume = "76",
doi = "10.1016/j.polymertesting.2019.04.004"
}

Zvicer, J., Medić, A., Veljović, Đ., Jevtić, S., Novak, S.,& Obradović, B.. (2019). Biomimetic characterization reveals enhancement of hydroxyapatite formation by fluid flow in gellan gum and bioactive glass composite scaffolds. in Polymer Testing
Elsevier Sci Ltd, Oxford., 76, 464-472.
https://doi.org/10.1016/j.polymertesting.2019.04.004

Zvicer J, Medić A, Veljović Đ, Jevtić S, Novak S, Obradović B. Biomimetic characterization reveals enhancement of hydroxyapatite formation by fluid flow in gellan gum and bioactive glass composite scaffolds. in Polymer Testing. 2019;76:464-472.
doi:10.1016/j.polymertesting.2019.04.004 .

Zvicer, Jovana, Medić, Ana, Veljović, Đorđe, Jevtić, Sanja, Novak, Sasa, Obradović, Bojana, "Biomimetic characterization reveals enhancement of hydroxyapatite formation by fluid flow in gellan gum and bioactive glass composite scaffolds" in Polymer Testing, 76 (2019):464-472,
https://doi.org/10.1016/j.polymertesting.2019.04.004 . .

TY  - JOUR
AU  - Veljović, Đorđe
AU  - Matić, Tamara
AU  - Stamenić, Tanja
AU  - Kojić, Vesna
AU  - Dimitrijević-Branković, Suzana
AU  - Lukić, Miodrag J.
AU  - Jevtić, Sanja
AU  - Radovanović, Željko
AU  - Petrović, Rada
AU  - Janaćković, Đorđe
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4126
AB  - The aim of this study was to improve the mechanical properties and to optimize antimicrobial activity of hydroxyapatite (HAP) by simultaneous doping with Mg and Cu ions in order to obtain material that would be able to assist in the bone/tooth healing process, prevent post-implementation infections and provide satisfying values of hardness and fracture toughness for biomedical application. Ion doping was done during the hydrothermal synthesis of HAP powders, whereby the content of Mg ions in the starting solution was varied between 1-20 mol. % with regard to Ca ions, while the amount of Cu ions was kept constant at 0.4 mol. %. The green compacts were sintered for 2 h at temperatures ranging 750-1200 degrees C depending on the Mg content, chosen in agreement with dilatometry results. Presence of Mg ions was found to favour transition from HAP to beta-tricalcium phosphate phase (beta-TCP), which enabled formation of biphasic HAP/beta-TCP and pure beta-TCP phase at 160 degrees C during hydrothermal synthesis. In vitro investigation of antimicrobial activity against Escherichia coli, Staphylococcus aureus and Enterococcus faecalis showed satisfactory antimicrobial activity. MTT assay performed on MRC-5 and L929 cell lines showed excellent cytocompatibility and cell proliferation. Maximum hardness by Vickers and fracture toughness values, 4.96 GPa and 1.75 MPa m(1/2) respectively, were obtained upon addition of 5 mol. % Mg, as a consequence of the lowest grain size and porosity, as well as the highest densification rate. This is, to the best of our knowledge, the highest fracture toughness for HAP or beta-TCP ceramics reported thus far.
PB  - Elsevier Sci Ltd, Oxford
T2  - Ceramics International
T1  - Mg/Cu co-substituted hydroxyapatite - Biocompatibility, mechanical properties and antimicrobial activity
EP  - 22039
IS  - 17
SP  - 22029
VL  - 45
DO  - 10.1016/j.ceramint.2019.07.219
ER  - 

@article{
author = "Veljović, Đorđe and Matić, Tamara and Stamenić, Tanja and Kojić, Vesna and Dimitrijević-Branković, Suzana and Lukić, Miodrag J. and Jevtić, Sanja and Radovanović, Željko and Petrović, Rada and Janaćković, Đorđe",
year = "2019",
abstract = "The aim of this study was to improve the mechanical properties and to optimize antimicrobial activity of hydroxyapatite (HAP) by simultaneous doping with Mg and Cu ions in order to obtain material that would be able to assist in the bone/tooth healing process, prevent post-implementation infections and provide satisfying values of hardness and fracture toughness for biomedical application. Ion doping was done during the hydrothermal synthesis of HAP powders, whereby the content of Mg ions in the starting solution was varied between 1-20 mol. % with regard to Ca ions, while the amount of Cu ions was kept constant at 0.4 mol. %. The green compacts were sintered for 2 h at temperatures ranging 750-1200 degrees C depending on the Mg content, chosen in agreement with dilatometry results. Presence of Mg ions was found to favour transition from HAP to beta-tricalcium phosphate phase (beta-TCP), which enabled formation of biphasic HAP/beta-TCP and pure beta-TCP phase at 160 degrees C during hydrothermal synthesis. In vitro investigation of antimicrobial activity against Escherichia coli, Staphylococcus aureus and Enterococcus faecalis showed satisfactory antimicrobial activity. MTT assay performed on MRC-5 and L929 cell lines showed excellent cytocompatibility and cell proliferation. Maximum hardness by Vickers and fracture toughness values, 4.96 GPa and 1.75 MPa m(1/2) respectively, were obtained upon addition of 5 mol. % Mg, as a consequence of the lowest grain size and porosity, as well as the highest densification rate. This is, to the best of our knowledge, the highest fracture toughness for HAP or beta-TCP ceramics reported thus far.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Ceramics International",
title = "Mg/Cu co-substituted hydroxyapatite - Biocompatibility, mechanical properties and antimicrobial activity",
pages = "22039-22029",
number = "17",
volume = "45",
doi = "10.1016/j.ceramint.2019.07.219"
}

Veljović, Đ., Matić, T., Stamenić, T., Kojić, V., Dimitrijević-Branković, S., Lukić, M. J., Jevtić, S., Radovanović, Ž., Petrović, R.,& Janaćković, Đ.. (2019). Mg/Cu co-substituted hydroxyapatite - Biocompatibility, mechanical properties and antimicrobial activity. in Ceramics International
Elsevier Sci Ltd, Oxford., 45(17), 22029-22039.
https://doi.org/10.1016/j.ceramint.2019.07.219

Veljović Đ, Matić T, Stamenić T, Kojić V, Dimitrijević-Branković S, Lukić MJ, Jevtić S, Radovanović Ž, Petrović R, Janaćković Đ. Mg/Cu co-substituted hydroxyapatite - Biocompatibility, mechanical properties and antimicrobial activity. in Ceramics International. 2019;45(17):22029-22039.
doi:10.1016/j.ceramint.2019.07.219 .

Veljović, Đorđe, Matić, Tamara, Stamenić, Tanja, Kojić, Vesna, Dimitrijević-Branković, Suzana, Lukić, Miodrag J., Jevtić, Sanja, Radovanović, Željko, Petrović, Rada, Janaćković, Đorđe, "Mg/Cu co-substituted hydroxyapatite - Biocompatibility, mechanical properties and antimicrobial activity" in Ceramics International, 45, no. 17 (2019):22029-22039,
https://doi.org/10.1016/j.ceramint.2019.07.219 . .

TY  - JOUR
AU  - Veljović, Đorđe
AU  - Matić, Tamara
AU  - Stamenić, Tanja
AU  - Kojić, Vesna
AU  - Dimitrijević-Branković, Suzana
AU  - Lukić, Miodrag J.
AU  - Jevtić, Sanja
AU  - Radovanović, Željko
AU  - Petrović, Rada
AU  - Janaćković, Đorđe
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5045
AB  - The aim of this study was to improve the mechanical properties and to optimize antimicrobial activity of hydroxyapatite (HAP) by simultaneous doping with Mg and Cu ions in order to obtain material that would be able to assist in the bone/tooth healing process, prevent post-implementation infections and provide satisfying values of hardness and fracture toughness for biomedical application. Ion doping was done during the hydrothermal synthesis of HAP powders, whereby the content of Mg ions in the starting solution was varied between 1-20 mol. % with regard to Ca ions, while the amount of Cu ions was kept constant at 0.4 mol. %. The green compacts were sintered for 2 h at temperatures ranging 750–1200 °C depending on the Mg content, chosen in agreement with dilatometry results. Presence of Mg ions was found to favour transition from HAP to β−tricalcium phosphate phase (β−TCP), which enabled formation of biphasic HAP/β−TCP and pure β−TCP phase at 160 °C during hydrothermal synthesis. In vitro investigation of antimicrobial activity against Escherichia coli, Staphylococcus aureus and Enterococcus faecalis showed satisfactory antimicrobial activity. MTT assay performed on MRC-5 and L929 cell lines showed excellent cytocompatibility and cell proliferation. Maximum hardness by Vickers and fracture toughness values, 4.96 GPa and 1.75 MPa m1/2 respectively, were obtained upon addition of 5 mol. % Mg, as a consequence of the lowest grain size and porosity, as well as the highest densification rate. This is, to the best of our knowledge, the highest fracture toughness for HAP or β-TCP ceramics reported thus far.
PB  - Elsevier Ltd
T2  - Ceramics International
T1  - Mg/Cu co-substituted hydroxyapatite – Biocompatibility, mechanical properties and antimicrobial activity
EP  - 22039
IS  - 17
SP  - 22029
VL  - 45
DO  - 10.1016/j.ceramint.2019.07.219
ER  - 

@article{
author = "Veljović, Đorđe and Matić, Tamara and Stamenić, Tanja and Kojić, Vesna and Dimitrijević-Branković, Suzana and Lukić, Miodrag J. and Jevtić, Sanja and Radovanović, Željko and Petrović, Rada and Janaćković, Đorđe",
year = "2019",
abstract = "The aim of this study was to improve the mechanical properties and to optimize antimicrobial activity of hydroxyapatite (HAP) by simultaneous doping with Mg and Cu ions in order to obtain material that would be able to assist in the bone/tooth healing process, prevent post-implementation infections and provide satisfying values of hardness and fracture toughness for biomedical application. Ion doping was done during the hydrothermal synthesis of HAP powders, whereby the content of Mg ions in the starting solution was varied between 1-20 mol. % with regard to Ca ions, while the amount of Cu ions was kept constant at 0.4 mol. %. The green compacts were sintered for 2 h at temperatures ranging 750–1200 °C depending on the Mg content, chosen in agreement with dilatometry results. Presence of Mg ions was found to favour transition from HAP to β−tricalcium phosphate phase (β−TCP), which enabled formation of biphasic HAP/β−TCP and pure β−TCP phase at 160 °C during hydrothermal synthesis. In vitro investigation of antimicrobial activity against Escherichia coli, Staphylococcus aureus and Enterococcus faecalis showed satisfactory antimicrobial activity. MTT assay performed on MRC-5 and L929 cell lines showed excellent cytocompatibility and cell proliferation. Maximum hardness by Vickers and fracture toughness values, 4.96 GPa and 1.75 MPa m1/2 respectively, were obtained upon addition of 5 mol. % Mg, as a consequence of the lowest grain size and porosity, as well as the highest densification rate. This is, to the best of our knowledge, the highest fracture toughness for HAP or β-TCP ceramics reported thus far.",
publisher = "Elsevier Ltd",
journal = "Ceramics International",
title = "Mg/Cu co-substituted hydroxyapatite – Biocompatibility, mechanical properties and antimicrobial activity",
pages = "22039-22029",
number = "17",
volume = "45",
doi = "10.1016/j.ceramint.2019.07.219"
}

Veljović, Đ., Matić, T., Stamenić, T., Kojić, V., Dimitrijević-Branković, S., Lukić, M. J., Jevtić, S., Radovanović, Ž., Petrović, R.,& Janaćković, Đ.. (2019). Mg/Cu co-substituted hydroxyapatite – Biocompatibility, mechanical properties and antimicrobial activity. in Ceramics International
Elsevier Ltd., 45(17), 22029-22039.
https://doi.org/10.1016/j.ceramint.2019.07.219

Veljović Đ, Matić T, Stamenić T, Kojić V, Dimitrijević-Branković S, Lukić MJ, Jevtić S, Radovanović Ž, Petrović R, Janaćković Đ. Mg/Cu co-substituted hydroxyapatite – Biocompatibility, mechanical properties and antimicrobial activity. in Ceramics International. 2019;45(17):22029-22039.
doi:10.1016/j.ceramint.2019.07.219 .

Veljović, Đorđe, Matić, Tamara, Stamenić, Tanja, Kojić, Vesna, Dimitrijević-Branković, Suzana, Lukić, Miodrag J., Jevtić, Sanja, Radovanović, Željko, Petrović, Rada, Janaćković, Đorđe, "Mg/Cu co-substituted hydroxyapatite – Biocompatibility, mechanical properties and antimicrobial activity" in Ceramics International, 45, no. 17 (2019):22029-22039,
https://doi.org/10.1016/j.ceramint.2019.07.219 . .

TY  - JOUR
AU  - Kamberović, Željko
AU  - Ranitović, Milisav
AU  - Korać, Marija
AU  - Anđić, Zoran
AU  - Gajić, Nataša
AU  - Đokić, Jovana
AU  - Jevtić, Sanja
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3896
AB  - This paper presents an experimentally-proved hydrometallurgical process for selective metals recovery from the waste-printed circuit boards (WPCBs) using a combination of conventional and time-saving methods: leaching, cementation, precipitation, reduction and electrowinning. According to the results obtained in the laboratory tests, 92.4% Cu, 98.5% Pb, 96.8% Ag and over 99% Au could be selectively leached and recovered using mineral acids: sulfuric, nitric and aqua regia. Problematic tin recovery was addressed with comprehensive theoretical and experimental work, so 55.4% of Sn could be recovered through the novel physical method, which consists of two-step phase separation. Based on the results, an integral hydrometallurgical route for selective base and precious metals recovery though consecutive steps, (i) Cu, (ii) Sn, (iii) Pb and Ag, and (iv) Au, was developed. The route was tested at scaled-up laboratory level, confirming feasibility of the process and efficiencies of metals recovery. According to the obtained results, the proposed hydrometallurgical route represents an innovative and promising method for selective metals recovery from WPCBs, particularly applicable in small scale hydrometallurgical environments, focused on medium and high grade WPCBs recycling.
PB  - MDPI, Basel
T2  - Metals
T1  - Hydrometallurgical Process for Selective Metals Recovery from Waste-Printed Circuit Boards
IS  - 6
VL  - 8
DO  - 10.3390/met8060441
ER  - 

@article{
author = "Kamberović, Željko and Ranitović, Milisav and Korać, Marija and Anđić, Zoran and Gajić, Nataša and Đokić, Jovana and Jevtić, Sanja",
year = "2018",
abstract = "This paper presents an experimentally-proved hydrometallurgical process for selective metals recovery from the waste-printed circuit boards (WPCBs) using a combination of conventional and time-saving methods: leaching, cementation, precipitation, reduction and electrowinning. According to the results obtained in the laboratory tests, 92.4% Cu, 98.5% Pb, 96.8% Ag and over 99% Au could be selectively leached and recovered using mineral acids: sulfuric, nitric and aqua regia. Problematic tin recovery was addressed with comprehensive theoretical and experimental work, so 55.4% of Sn could be recovered through the novel physical method, which consists of two-step phase separation. Based on the results, an integral hydrometallurgical route for selective base and precious metals recovery though consecutive steps, (i) Cu, (ii) Sn, (iii) Pb and Ag, and (iv) Au, was developed. The route was tested at scaled-up laboratory level, confirming feasibility of the process and efficiencies of metals recovery. According to the obtained results, the proposed hydrometallurgical route represents an innovative and promising method for selective metals recovery from WPCBs, particularly applicable in small scale hydrometallurgical environments, focused on medium and high grade WPCBs recycling.",
publisher = "MDPI, Basel",
journal = "Metals",
title = "Hydrometallurgical Process for Selective Metals Recovery from Waste-Printed Circuit Boards",
number = "6",
volume = "8",
doi = "10.3390/met8060441"
}

Kamberović, Ž., Ranitović, M., Korać, M., Anđić, Z., Gajić, N., Đokić, J.,& Jevtić, S.. (2018). Hydrometallurgical Process for Selective Metals Recovery from Waste-Printed Circuit Boards. in Metals
MDPI, Basel., 8(6).
https://doi.org/10.3390/met8060441

Kamberović Ž, Ranitović M, Korać M, Anđić Z, Gajić N, Đokić J, Jevtić S. Hydrometallurgical Process for Selective Metals Recovery from Waste-Printed Circuit Boards. in Metals. 2018;8(6).
doi:10.3390/met8060441 .

Kamberović, Željko, Ranitović, Milisav, Korać, Marija, Anđić, Zoran, Gajić, Nataša, Đokić, Jovana, Jevtić, Sanja, "Hydrometallurgical Process for Selective Metals Recovery from Waste-Printed Circuit Boards" in Metals, 8, no. 6 (2018),
https://doi.org/10.3390/met8060441 . .

TY  - CONF
AU  - Rajić, Nevenka
AU  - Milenković, J.
AU  - Pavlović, J.
AU  - Jevtić, S.
AU  - Kaplanec, I.
AU  - Rečnik, A.
AU  - Hrenović, J.
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5076
AB  - Clinoptilolite is the most abundant natural zeolite in Serbia, and the Zlatokop deposit (near Vranjska Banja) is the largest deposit. The zeolitic tuff (CT) from Zlatokop contains >70 wt. % clinoptilolite with quartz and feldspar as major mineral impurities. Considering the high clinoptilolite content in the CT, this tuff has been studied in detail as an adsorbent, catalyst carrier and antimicrobial agent.  We evaluated the cation-exchange capacity for several toxic metal cations, the sorption efficiency for several anions, the catalytic activity in the processes of valorization of biomass, and the antimicrobial activity of the CT.
PB  - Lublin University of Technology, Nadbystrzycka 40 20-618 Lublin
C3  - 10th International Conference on the Occurrence,  Properties and Utilization of Natural Zeolites (Book of Abstracts)
T1  - Adsorptive, catalytic and antimicrobial applications of Serbian natural clinoptilolite
EP  - 80
SP  - 79
UR  - https://hdl.handle.net/21.15107/rcub_technorep_5076
ER  - 

@conference{
author = "Rajić, Nevenka and Milenković, J. and Pavlović, J. and Jevtić, S. and Kaplanec, I. and Rečnik, A. and Hrenović, J.",
year = "2018",
abstract = "Clinoptilolite is the most abundant natural zeolite in Serbia, and the Zlatokop deposit (near Vranjska Banja) is the largest deposit. The zeolitic tuff (CT) from Zlatokop contains >70 wt. % clinoptilolite with quartz and feldspar as major mineral impurities. Considering the high clinoptilolite content in the CT, this tuff has been studied in detail as an adsorbent, catalyst carrier and antimicrobial agent.  We evaluated the cation-exchange capacity for several toxic metal cations, the sorption efficiency for several anions, the catalytic activity in the processes of valorization of biomass, and the antimicrobial activity of the CT.",
publisher = "Lublin University of Technology, Nadbystrzycka 40 20-618 Lublin",
journal = "10th International Conference on the Occurrence,  Properties and Utilization of Natural Zeolites (Book of Abstracts)",
title = "Adsorptive, catalytic and antimicrobial applications of Serbian natural clinoptilolite",
pages = "80-79",
url = "https://hdl.handle.net/21.15107/rcub_technorep_5076"
}

Rajić, N., Milenković, J., Pavlović, J., Jevtić, S., Kaplanec, I., Rečnik, A.,& Hrenović, J.. (2018). Adsorptive, catalytic and antimicrobial applications of Serbian natural clinoptilolite. in 10th International Conference on the Occurrence,  Properties and Utilization of Natural Zeolites (Book of Abstracts)
Lublin University of Technology, Nadbystrzycka 40 20-618 Lublin., 79-80.
https://hdl.handle.net/21.15107/rcub_technorep_5076

Rajić N, Milenković J, Pavlović J, Jevtić S, Kaplanec I, Rečnik A, Hrenović J. Adsorptive, catalytic and antimicrobial applications of Serbian natural clinoptilolite. in 10th International Conference on the Occurrence,  Properties and Utilization of Natural Zeolites (Book of Abstracts). 2018;:79-80.
https://hdl.handle.net/21.15107/rcub_technorep_5076 .

Rajić, Nevenka, Milenković, J., Pavlović, J., Jevtić, S., Kaplanec, I., Rečnik, A., Hrenović, J., "Adsorptive, catalytic and antimicrobial applications of Serbian natural clinoptilolite" in 10th International Conference on the Occurrence,  Properties and Utilization of Natural Zeolites (Book of Abstracts) (2018):79-80,
https://hdl.handle.net/21.15107/rcub_technorep_5076 .

TY  - JOUR
AU  - Ponjavić, Marijana
AU  - Nikolić, Marija
AU  - Jevtić, Sanja
AU  - Rogan, Jelena
AU  - Stevanović, Sanja
AU  - Đonlagić, Jasna
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3419
AB  - Two series, one of triblock (PCL/PEO/PCL) and the other of diblock (PCL/PEO) copolymers were prepared by ring-opening polymerization of epsilon-caprolactone catalized with tin(II) octoate and by using dihydroxy or monohydroxy poly(ethylene oxide) as the macroinitiator. The PEO block length was fixed (M-n 1,000 g/mol) and the PCL block lengths (M-n 10,000-40,000 g/mol) were tailored by changing weight ratio of epsilon-CL/PEO. The copolymers' structure was confirmed by H-1 and quantitative C-13 NMR spectroscopy while their molecular weights were determined by GPC analysis. The thermal properties and the degree of crystallinity of the copolymers were investigated and compared by using DSC and WAXS. Both types of copolymers were semicrystalline with the orthorhombic PCL crystal lattice. The surface morphology of the copolymer films was investigated by using optical microscopy and AFM analysis, which confirmed the spherulitic lamellar structure with spherulites of different diameters. Data indicated that a low content of PEO segment had an influence on thermal degradation behavior, crystallinity and morphology of copolymers. Roughness of copolymer films was affected by the content of PEO and correlated with the spherulites' diameter. The small changes in water and moisture absorption properties of copolymers compared to homopolymer PCL were observed.
PB  - Springer, Dordrecht
T2  - Macromolecular Research
T1  - Influence of a Low Content of PEO Segment on the Thermal, Surface and Morphological Properties of Triblock and Diblock PCL Copolymers
EP  - 335
IS  - 4
SP  - 323
VL  - 24
DO  - 10.1007/s13233-016-4048-y
ER  - 

@article{
author = "Ponjavić, Marijana and Nikolić, Marija and Jevtić, Sanja and Rogan, Jelena and Stevanović, Sanja and Đonlagić, Jasna",
year = "2016",
abstract = "Two series, one of triblock (PCL/PEO/PCL) and the other of diblock (PCL/PEO) copolymers were prepared by ring-opening polymerization of epsilon-caprolactone catalized with tin(II) octoate and by using dihydroxy or monohydroxy poly(ethylene oxide) as the macroinitiator. The PEO block length was fixed (M-n 1,000 g/mol) and the PCL block lengths (M-n 10,000-40,000 g/mol) were tailored by changing weight ratio of epsilon-CL/PEO. The copolymers' structure was confirmed by H-1 and quantitative C-13 NMR spectroscopy while their molecular weights were determined by GPC analysis. The thermal properties and the degree of crystallinity of the copolymers were investigated and compared by using DSC and WAXS. Both types of copolymers were semicrystalline with the orthorhombic PCL crystal lattice. The surface morphology of the copolymer films was investigated by using optical microscopy and AFM analysis, which confirmed the spherulitic lamellar structure with spherulites of different diameters. Data indicated that a low content of PEO segment had an influence on thermal degradation behavior, crystallinity and morphology of copolymers. Roughness of copolymer films was affected by the content of PEO and correlated with the spherulites' diameter. The small changes in water and moisture absorption properties of copolymers compared to homopolymer PCL were observed.",
publisher = "Springer, Dordrecht",
journal = "Macromolecular Research",
title = "Influence of a Low Content of PEO Segment on the Thermal, Surface and Morphological Properties of Triblock and Diblock PCL Copolymers",
pages = "335-323",
number = "4",
volume = "24",
doi = "10.1007/s13233-016-4048-y"
}

Ponjavić, M., Nikolić, M., Jevtić, S., Rogan, J., Stevanović, S.,& Đonlagić, J.. (2016). Influence of a Low Content of PEO Segment on the Thermal, Surface and Morphological Properties of Triblock and Diblock PCL Copolymers. in Macromolecular Research
Springer, Dordrecht., 24(4), 323-335.
https://doi.org/10.1007/s13233-016-4048-y

Ponjavić M, Nikolić M, Jevtić S, Rogan J, Stevanović S, Đonlagić J. Influence of a Low Content of PEO Segment on the Thermal, Surface and Morphological Properties of Triblock and Diblock PCL Copolymers. in Macromolecular Research. 2016;24(4):323-335.
doi:10.1007/s13233-016-4048-y .

Ponjavić, Marijana, Nikolić, Marija, Jevtić, Sanja, Rogan, Jelena, Stevanović, Sanja, Đonlagić, Jasna, "Influence of a Low Content of PEO Segment on the Thermal, Surface and Morphological Properties of Triblock and Diblock PCL Copolymers" in Macromolecular Research, 24, no. 4 (2016):323-335,
https://doi.org/10.1007/s13233-016-4048-y . .

TY  - JOUR
AU  - Jevtić, Sanja
AU  - Jevtić, Bojan
AU  - Rajić, Nevenka
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5084
AB  - U radu su ispitana adsorpciona svojstva letećeg pepela sa deponije termoelektrane „Moravaˮ, u 
odnosu na fosfat-jone prisutne u vodenoj sredini. Pepeo iz ove termoelektrane pokazuje dobra 
adsorpciona svojstva i mogao bi da se primeni za uklanjanje fosfata. Efikasnost adsorpcije raste sa povećanjem početne koncentracije fosfata, temperature i vremena kontakta. Adsorpcija se odigrava po principu hemisorpcije pri čemu dolazi do obrazovanja kalcijum-hidrogenfosfata-dihidrata za koji je rendgenskom difrakcijom praha utvrđeno da odgovara brušitu. Kinetika adsorpcije prati Lagergrenov model pseudo-drugog reda. Kiselo-bazna obrada pepela dovodi do promene fizičko-hemijskih svojstava što ima za posledicu smanjenje adsorpcionog kapaciteta pepela.
AB  - The paper studied the adsorption properties of the fly ash from the landfill of thermal power plant 
“Morava” towards phosphate ions present in aqueous medium. The ash shows good adsorption properties and could be used for removal of phosphate ions. Adsorption efficiency increases with increasing initial phosphate concentration, temperature and contact time. Adsorption takes place by chemisorption and formation of calcium hydrogen phosphate dihydrate for which a powder X-ray diffraction analysis shows that it belongs to brushite. Adsorption kinetics follows the Lagergren's pseudo-second order kinetic model. An acid-base treatment of the ash leads to changes of physical-chemical properties resulting in a decrease of the adsorption capacity of the ash.
PB  - Naučno-stručno društvo za zaštitu životne sredine Srbije
T2  - Ecologica
T1  - Ispitivanje adsorpcionih svojstava elektrofilterskog pepela sa deponije termoelektrane „Moravaˮ u odnosu na fosfat-jone prisutne u vodenom rastvoru
EP  - 559
SP  - 555
VL  - 83
UR  - https://hdl.handle.net/21.15107/rcub_technorep_5084
ER  - 

@article{
author = "Jevtić, Sanja and Jevtić, Bojan and Rajić, Nevenka",
year = "2016",
abstract = "U radu su ispitana adsorpciona svojstva letećeg pepela sa deponije termoelektrane „Moravaˮ, u 
odnosu na fosfat-jone prisutne u vodenoj sredini. Pepeo iz ove termoelektrane pokazuje dobra 
adsorpciona svojstva i mogao bi da se primeni za uklanjanje fosfata. Efikasnost adsorpcije raste sa povećanjem početne koncentracije fosfata, temperature i vremena kontakta. Adsorpcija se odigrava po principu hemisorpcije pri čemu dolazi do obrazovanja kalcijum-hidrogenfosfata-dihidrata za koji je rendgenskom difrakcijom praha utvrđeno da odgovara brušitu. Kinetika adsorpcije prati Lagergrenov model pseudo-drugog reda. Kiselo-bazna obrada pepela dovodi do promene fizičko-hemijskih svojstava što ima za posledicu smanjenje adsorpcionog kapaciteta pepela., The paper studied the adsorption properties of the fly ash from the landfill of thermal power plant 
“Morava” towards phosphate ions present in aqueous medium. The ash shows good adsorption properties and could be used for removal of phosphate ions. Adsorption efficiency increases with increasing initial phosphate concentration, temperature and contact time. Adsorption takes place by chemisorption and formation of calcium hydrogen phosphate dihydrate for which a powder X-ray diffraction analysis shows that it belongs to brushite. Adsorption kinetics follows the Lagergren's pseudo-second order kinetic model. An acid-base treatment of the ash leads to changes of physical-chemical properties resulting in a decrease of the adsorption capacity of the ash.",
publisher = "Naučno-stručno društvo za zaštitu životne sredine Srbije",
journal = "Ecologica",
title = "Ispitivanje adsorpcionih svojstava elektrofilterskog pepela sa deponije termoelektrane „Moravaˮ u odnosu na fosfat-jone prisutne u vodenom rastvoru",
pages = "559-555",
volume = "83",
url = "https://hdl.handle.net/21.15107/rcub_technorep_5084"
}

Jevtić, S., Jevtić, B.,& Rajić, N.. (2016). Ispitivanje adsorpcionih svojstava elektrofilterskog pepela sa deponije termoelektrane „Moravaˮ u odnosu na fosfat-jone prisutne u vodenom rastvoru. in Ecologica
Naučno-stručno društvo za zaštitu životne sredine Srbije., 83, 555-559.
https://hdl.handle.net/21.15107/rcub_technorep_5084

Jevtić S, Jevtić B, Rajić N. Ispitivanje adsorpcionih svojstava elektrofilterskog pepela sa deponije termoelektrane „Moravaˮ u odnosu na fosfat-jone prisutne u vodenom rastvoru. in Ecologica. 2016;83:555-559.
https://hdl.handle.net/21.15107/rcub_technorep_5084 .

Jevtić, Sanja, Jevtić, Bojan, Rajić, Nevenka, "Ispitivanje adsorpcionih svojstava elektrofilterskog pepela sa deponije termoelektrane „Moravaˮ u odnosu na fosfat-jone prisutne u vodenom rastvoru" in Ecologica, 83 (2016):555-559,
https://hdl.handle.net/21.15107/rcub_technorep_5084 .

TY  - THES
AU  - Jevtić, Sanja
PY  - 2015
UR  - http://eteze.bg.ac.rs/application/showtheses?thesesId=3283
UR  - https://fedorabg.bg.ac.rs/fedora/get/o:11710/bdef:Content/download
UR  - http://vbs.rs/scripts/cobiss?command=DISPLAY&base=70036&RID=47512591
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4623
AB  - In the first part of the dissertation, the possibility of modifying the zeolitic tuff from the mine Zlatokop (near Vranjska Banja) was investigated in order to obtain new adsorbents. The second part presents the possibility of synthesize of new phosphate‐based microporous materials with structural properties of zeolites. The zeolitic tuff modified with benzalkonium chloride (BC) was tested as an adsorbent for the salicylate‐anions (SA). SA‐enriched zeolite was further studied as a model system for the controlled release of the pharmacologically active substance as well as a disinfectant toward the pathogenic bacteria: Gram‐negative Escherichia coli and Gram‐positive Staphylococcus aureus. It was found that about 80% of the adsorbed salicylate is delivered into solution during 5 hours. The release profile of SA from BC‐modified zeolite into solution is in a good agreement with the Korsmeyer‐Peppas kinetic model, which is usually used for description of the release kinetics of the pharmacologically active substances from different substrates. The zeolitic tuff modified with hydrated iron(III) oxide was investigated as an adsorbent for selenite and selenate ions. The adsorbent binds the anions through formation of Se‐O‐Fe and Se‐O‐Si bonds and oxo‐complexes. The spent adsorbent was tested as a supplement for the cultivation of mushroom Pleurotus ostreatus. The mushrooms grown on the substrate show possibility to adopt selenium from the surface and transfer it into selenoproteins. Structural role of 3‐methylaminopropylamine (MPA) in the synthesis of the porous inorganic phosphate‐based polymers was tested in the second part of thesis. The influence of temperature and time, the mole ratio of reactants and the presence of fluoride ions on the crystallization of aluminophosphates, metalsubstituted aluminophosphates and zincophosphates was investigated. Some of the obtained crystalline products are isostructural with the known alumo‐ and galophosphates, while others are new crystalline products.
AB  - U prvom delu disertacije ispitana je mogućnost modifikacije zeolitskog tufa iz rudnika Zlatokop (okolina Vranjske Banje) u cilju dobijanja novih adsorbenata, dok je u drugom delu opisana mogućnost sintetisanja novih mikroporoznih jedinjenja sa strukturnim svojstvima zeolita, na bazi fosfata. Zeolitski tuf modifikovan benzalkonijum‐hloridom (BC) ispitan je kao adsorbent salicilata (SA). SA‐obogaćeni zeolit je dalje ispitan kao model sistem za kontrolisano otpuštanje farmakološki aktivne supstance i kao dezinficijens u odnosu na bakterije: Gram‐negativnu Escherichia coli i Gram‐pozitivnu Staphylococcus aureus. Utvrđeno je da oko 80% salicilata pređe u rastvor sa adsorbenta tokom 5 sati. Kinetika desorpcije prati Korsmajer‐Pepasov kinetički model koji najčešće opisuje kinetiku otpuštanja farmakološki aktivnih supstanci sa različitih podloga. Zeolitski tuf modifikovan hidratisanim gvožđe(III)‐oksidom ispitan je kao adsorbent selenit‐ i selenat‐jona. Ovaj adsorbent vezuje ispitivane anjone tako što na površini adsorbenta dolazi do obrazovanja oksokompleksa i Se‐O‐Fe i Se‐O‐Si veza. Ovaj adsorbent ispitan je i kao supstrat u uzgoju medicinski značajne gljive Pleurotus ostreatus (bukovače). Gljive uzgajane na ovom supstratu usvajaju selen sa površine adsorbenta i prevode ga u selenoproteine. U drugom delu teze ispitana je strukturna uloga 3‐metilaminopropilamina (MPA) u sintezi poroznih neorganskih polimera na bazi fosfata. Praćen je uticaj temperature i vremena, molskog odnosa reaktanata i prisustva fluorid‐jona na kristalizaciju alumofosfata, metal‐supstituisanih alumofosfata i cinkfosfata. Dobijeni su različiti kristalni proizvodi od kojih su neki izostrukturni sa već poznatim alumo‐ i galofosfatima, a neki su novi kristalni proizvodi.
PB  - Univerzitet u Beogradu, Tehnološko-metalurški fakultet
T1  - Synthesis and characterization of materials obtained by modification of natural zeolite (clinoptilolite) and phosphate based microporous materials with zeolitic structure
T1  - Sinteza i karakterizacija materijala nastalih modifikacijom zeolita (klinoptilolita) i mikroporoznih fosfata sa strukturom zeolita
UR  - https://hdl.handle.net/21.15107/rcub_technorep_4623
ER  - 

@phdthesis{
author = "Jevtić, Sanja",
year = "2015",
abstract = "In the first part of the dissertation, the possibility of modifying the zeolitic tuff from the mine Zlatokop (near Vranjska Banja) was investigated in order to obtain new adsorbents. The second part presents the possibility of synthesize of new phosphate‐based microporous materials with structural properties of zeolites. The zeolitic tuff modified with benzalkonium chloride (BC) was tested as an adsorbent for the salicylate‐anions (SA). SA‐enriched zeolite was further studied as a model system for the controlled release of the pharmacologically active substance as well as a disinfectant toward the pathogenic bacteria: Gram‐negative Escherichia coli and Gram‐positive Staphylococcus aureus. It was found that about 80% of the adsorbed salicylate is delivered into solution during 5 hours. The release profile of SA from BC‐modified zeolite into solution is in a good agreement with the Korsmeyer‐Peppas kinetic model, which is usually used for description of the release kinetics of the pharmacologically active substances from different substrates. The zeolitic tuff modified with hydrated iron(III) oxide was investigated as an adsorbent for selenite and selenate ions. The adsorbent binds the anions through formation of Se‐O‐Fe and Se‐O‐Si bonds and oxo‐complexes. The spent adsorbent was tested as a supplement for the cultivation of mushroom Pleurotus ostreatus. The mushrooms grown on the substrate show possibility to adopt selenium from the surface and transfer it into selenoproteins. Structural role of 3‐methylaminopropylamine (MPA) in the synthesis of the porous inorganic phosphate‐based polymers was tested in the second part of thesis. The influence of temperature and time, the mole ratio of reactants and the presence of fluoride ions on the crystallization of aluminophosphates, metalsubstituted aluminophosphates and zincophosphates was investigated. Some of the obtained crystalline products are isostructural with the known alumo‐ and galophosphates, while others are new crystalline products., U prvom delu disertacije ispitana je mogućnost modifikacije zeolitskog tufa iz rudnika Zlatokop (okolina Vranjske Banje) u cilju dobijanja novih adsorbenata, dok je u drugom delu opisana mogućnost sintetisanja novih mikroporoznih jedinjenja sa strukturnim svojstvima zeolita, na bazi fosfata. Zeolitski tuf modifikovan benzalkonijum‐hloridom (BC) ispitan je kao adsorbent salicilata (SA). SA‐obogaćeni zeolit je dalje ispitan kao model sistem za kontrolisano otpuštanje farmakološki aktivne supstance i kao dezinficijens u odnosu na bakterije: Gram‐negativnu Escherichia coli i Gram‐pozitivnu Staphylococcus aureus. Utvrđeno je da oko 80% salicilata pređe u rastvor sa adsorbenta tokom 5 sati. Kinetika desorpcije prati Korsmajer‐Pepasov kinetički model koji najčešće opisuje kinetiku otpuštanja farmakološki aktivnih supstanci sa različitih podloga. Zeolitski tuf modifikovan hidratisanim gvožđe(III)‐oksidom ispitan je kao adsorbent selenit‐ i selenat‐jona. Ovaj adsorbent vezuje ispitivane anjone tako što na površini adsorbenta dolazi do obrazovanja oksokompleksa i Se‐O‐Fe i Se‐O‐Si veza. Ovaj adsorbent ispitan je i kao supstrat u uzgoju medicinski značajne gljive Pleurotus ostreatus (bukovače). Gljive uzgajane na ovom supstratu usvajaju selen sa površine adsorbenta i prevode ga u selenoproteine. U drugom delu teze ispitana je strukturna uloga 3‐metilaminopropilamina (MPA) u sintezi poroznih neorganskih polimera na bazi fosfata. Praćen je uticaj temperature i vremena, molskog odnosa reaktanata i prisustva fluorid‐jona na kristalizaciju alumofosfata, metal‐supstituisanih alumofosfata i cinkfosfata. Dobijeni su različiti kristalni proizvodi od kojih su neki izostrukturni sa već poznatim alumo‐ i galofosfatima, a neki su novi kristalni proizvodi.",
publisher = "Univerzitet u Beogradu, Tehnološko-metalurški fakultet",
title = "Synthesis and characterization of materials obtained by modification of natural zeolite (clinoptilolite) and phosphate based microporous materials with zeolitic structure, Sinteza i karakterizacija materijala nastalih modifikacijom zeolita (klinoptilolita) i mikroporoznih fosfata sa strukturom zeolita",
url = "https://hdl.handle.net/21.15107/rcub_technorep_4623"
}

Jevtić, S.. (2015). Synthesis and characterization of materials obtained by modification of natural zeolite (clinoptilolite) and phosphate based microporous materials with zeolitic structure. 
Univerzitet u Beogradu, Tehnološko-metalurški fakultet..
https://hdl.handle.net/21.15107/rcub_technorep_4623

Jevtić S. Synthesis and characterization of materials obtained by modification of natural zeolite (clinoptilolite) and phosphate based microporous materials with zeolitic structure. 2015;.
https://hdl.handle.net/21.15107/rcub_technorep_4623 .

Jevtić, Sanja, "Synthesis and characterization of materials obtained by modification of natural zeolite (clinoptilolite) and phosphate based microporous materials with zeolitic structure" (2015),
https://hdl.handle.net/21.15107/rcub_technorep_4623 .

TY  - JOUR
AU  - Jevtić, Sanja
AU  - Arcon, Iztok
AU  - Recnik, Aleksander
AU  - Babić, Biljana M.
AU  - Mazaj, Matjaz
AU  - Pavlović, Jelena
AU  - Matijasević, Danka
AU  - Nikšić, Miomir
AU  - Rajić, Nevenka
PY  - 2014
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2662
AB  - Se(IV) and Se(VI) anions are the dominant species of Se existing in aqueous systems. In this study, the iron(III)-modified natural zeolitic tuff (Fe-CLI) from the Serbian deposit Zlatokop has been investigated as an adsorbent for the Se oxyanions. Fe-CLI shows adsorption activity for both Se(IV) and Se(VI) which decreases with increasing pH. The adsorption capacity of Fe-CLI is found to be higher for Se(IV) than for Se(VI). Kinetics data follow the pseudo-second-order model and the obtained parameters k indicate that the rates of adsorption and desorption are higher for Se(VI). Extended X-ray absorption fine structure (EXAFS) and X-ray absorption near edge structure (XANES) analyses reveal that Se is bound at the zeolite surface forming not only the Se-O-Fe but also Se-O-Si bonds. The adsorption mechanism depends of the type of oxo ions. Samples of zeolitic tuff which contain Se were tested as soil supplements for the cultivation of Pleurotus ostreatus mushrooms. The fungus adsorbed the inorganic Se from zeolitic tuff transforming it to a more valuable organically bound form.
PB  - Elsevier, Amsterdam
T2  - Microporous and Mesoporous Materials
T1  - The iron(III)-modified natural zeolitic tuff as an adsorbent and carrier for selenium oxyanions
EP  - 100
SP  - 92
VL  - 197
DO  - 10.1016/j.micromeso.2014.06.008
ER  - 

@article{
author = "Jevtić, Sanja and Arcon, Iztok and Recnik, Aleksander and Babić, Biljana M. and Mazaj, Matjaz and Pavlović, Jelena and Matijasević, Danka and Nikšić, Miomir and Rajić, Nevenka",
year = "2014",
abstract = "Se(IV) and Se(VI) anions are the dominant species of Se existing in aqueous systems. In this study, the iron(III)-modified natural zeolitic tuff (Fe-CLI) from the Serbian deposit Zlatokop has been investigated as an adsorbent for the Se oxyanions. Fe-CLI shows adsorption activity for both Se(IV) and Se(VI) which decreases with increasing pH. The adsorption capacity of Fe-CLI is found to be higher for Se(IV) than for Se(VI). Kinetics data follow the pseudo-second-order model and the obtained parameters k indicate that the rates of adsorption and desorption are higher for Se(VI). Extended X-ray absorption fine structure (EXAFS) and X-ray absorption near edge structure (XANES) analyses reveal that Se is bound at the zeolite surface forming not only the Se-O-Fe but also Se-O-Si bonds. The adsorption mechanism depends of the type of oxo ions. Samples of zeolitic tuff which contain Se were tested as soil supplements for the cultivation of Pleurotus ostreatus mushrooms. The fungus adsorbed the inorganic Se from zeolitic tuff transforming it to a more valuable organically bound form.",
publisher = "Elsevier, Amsterdam",
journal = "Microporous and Mesoporous Materials",
title = "The iron(III)-modified natural zeolitic tuff as an adsorbent and carrier for selenium oxyanions",
pages = "100-92",
volume = "197",
doi = "10.1016/j.micromeso.2014.06.008"
}

Jevtić, S., Arcon, I., Recnik, A., Babić, B. M., Mazaj, M., Pavlović, J., Matijasević, D., Nikšić, M.,& Rajić, N.. (2014). The iron(III)-modified natural zeolitic tuff as an adsorbent and carrier for selenium oxyanions. in Microporous and Mesoporous Materials
Elsevier, Amsterdam., 197, 92-100.
https://doi.org/10.1016/j.micromeso.2014.06.008

Jevtić S, Arcon I, Recnik A, Babić BM, Mazaj M, Pavlović J, Matijasević D, Nikšić M, Rajić N. The iron(III)-modified natural zeolitic tuff as an adsorbent and carrier for selenium oxyanions. in Microporous and Mesoporous Materials. 2014;197:92-100.
doi:10.1016/j.micromeso.2014.06.008 .

Jevtić, Sanja, Arcon, Iztok, Recnik, Aleksander, Babić, Biljana M., Mazaj, Matjaz, Pavlović, Jelena, Matijasević, Danka, Nikšić, Miomir, Rajić, Nevenka, "The iron(III)-modified natural zeolitic tuff as an adsorbent and carrier for selenium oxyanions" in Microporous and Mesoporous Materials, 197 (2014):92-100,
https://doi.org/10.1016/j.micromeso.2014.06.008 . .