TY  - JOUR
AU  - Abduarahman, Muna Abdualatif
AU  - Vuksanović, Marija M.
AU  - Milošević, Milena
AU  - Egelja, Adela
AU  - Savić, Andrija B.
AU  - Veličković, Zlate
AU  - Marinković, Aleksandar
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12866
AB  - This study aimed to investigate the adsorption of As(V), phosphate, and textile dye Acid Green 25 (AG-25) on layered double hydroxides Mn-Fe_LDH and corresponding membranes (wCell/Mn-Fe_LDH). The wCell membrane, derived from waste tobacco boxes, was formed by cross-linking of epoxy and amino modified cellulose fibers with epoxy modified Mn-Fe_LDH and lysine as cross-linker. Structural and morphological analyses were conducted for Mn-Fe_LDH and wCell/Mn-Fe_LDH. The batch system explored pH, contact time, temperature, and initial concentration effects on wCell/Mn-Fe_LDH adsorption efficiency. Adsorption capacities of 82.71, 106.9, and 130.3 mg g−1 were achieved for As(V), phosphate, and AG-25, respectively, indicating effective anionic species removal. Kinetic analysis suggested intraparticle diffusion as the rate-limiting step. Thermodynamic parameters and ionic strength effects indicated a physisorption mechanism for AG-25 and surface complexation for As(V) and phosphate. Biodegradation experiments after five adsorption/desorption cycles revealed the membrane’s decomposition, with phosphate’s strong bonding releasing essential elements valuable for soil fertilization. Effluent wastewater treatment demonstrated low environmental impact through the formation of insoluble As(V) salts and photocatalytic dye degradation.
T2  - Journal of Polymers and the Environment
T1  - Mn-Fe Layered Double Hydroxide Modified Cellulose-Based Membrane for Sustainable Anionic Pollutant Removal
IS  - InPress
DO  - 10.1007/s10924-024-03192-x
ER  - 

@article{
author = "Abduarahman, Muna Abdualatif and Vuksanović, Marija M. and Milošević, Milena and Egelja, Adela and Savić, Andrija B. and Veličković, Zlate and Marinković, Aleksandar",
year = "2024",
abstract = "This study aimed to investigate the adsorption of As(V), phosphate, and textile dye Acid Green 25 (AG-25) on layered double hydroxides Mn-Fe_LDH and corresponding membranes (wCell/Mn-Fe_LDH). The wCell membrane, derived from waste tobacco boxes, was formed by cross-linking of epoxy and amino modified cellulose fibers with epoxy modified Mn-Fe_LDH and lysine as cross-linker. Structural and morphological analyses were conducted for Mn-Fe_LDH and wCell/Mn-Fe_LDH. The batch system explored pH, contact time, temperature, and initial concentration effects on wCell/Mn-Fe_LDH adsorption efficiency. Adsorption capacities of 82.71, 106.9, and 130.3 mg g−1 were achieved for As(V), phosphate, and AG-25, respectively, indicating effective anionic species removal. Kinetic analysis suggested intraparticle diffusion as the rate-limiting step. Thermodynamic parameters and ionic strength effects indicated a physisorption mechanism for AG-25 and surface complexation for As(V) and phosphate. Biodegradation experiments after five adsorption/desorption cycles revealed the membrane’s decomposition, with phosphate’s strong bonding releasing essential elements valuable for soil fertilization. Effluent wastewater treatment demonstrated low environmental impact through the formation of insoluble As(V) salts and photocatalytic dye degradation.",
journal = "Journal of Polymers and the Environment",
title = "Mn-Fe Layered Double Hydroxide Modified Cellulose-Based Membrane for Sustainable Anionic Pollutant Removal",
number = "InPress",
doi = "10.1007/s10924-024-03192-x"
}

Abduarahman, M. A., Vuksanović, M. M., Milošević, M., Egelja, A., Savić, A. B., Veličković, Z.,& Marinković, A.. (2024). Mn-Fe Layered Double Hydroxide Modified Cellulose-Based Membrane for Sustainable Anionic Pollutant Removal. in Journal of Polymers and the Environment(InPress).
https://doi.org/10.1007/s10924-024-03192-x

Abduarahman MA, Vuksanović MM, Milošević M, Egelja A, Savić AB, Veličković Z, Marinković A. Mn-Fe Layered Double Hydroxide Modified Cellulose-Based Membrane for Sustainable Anionic Pollutant Removal. in Journal of Polymers and the Environment. 2024;(InPress).
doi:10.1007/s10924-024-03192-x .

Abduarahman, Muna Abdualatif, Vuksanović, Marija M., Milošević, Milena, Egelja, Adela, Savić, Andrija B., Veličković, Zlate, Marinković, Aleksandar, "Mn-Fe Layered Double Hydroxide Modified Cellulose-Based Membrane for Sustainable Anionic Pollutant Removal" in Journal of Polymers and the Environment, no. InPress (2024),
https://doi.org/10.1007/s10924-024-03192-x . .

TY  - JOUR
AU  - Vuksanović, Marija M.
AU  - Mladenović, Ivana
AU  - Radovanović, Željko
AU  - Živković, Predrag
AU  - Savić, Andrija B.
AU  - Marinković, Aleksandar
AU  - Jančić-Heinemann, Radmila
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12952
AB  - Polimerne smole na bazi akrilata dobijene iz Bis-GMA (Bisfenol A glicidmetakrilat), koji je pogodan za fotopolimerizaciju, koriste se u stomatologiji za različite namene zbog lakoće nanošenja i mogućnosti da se utiče na njihova svojstva dodavanjem ojačanja različitog oblika i hemijskog sastava. Sintetisano je ojačanje u formi čestica na bazi dvostrukih slojevitih hidroksida magnezijuma i aluminijuma (MgAlLDH-Layered Double Hidroxides) nataloženih na silicijum dioksidu dobijenom iz ljuski pirinča. Kao podloge korišćene su metalna legura na bazi hroma i molibdena za primenu u stomatologiji i staklo u formi podloga za mikroskopske preparate. Adhezivna svojstva kompozita su bitna sa aspekta njihove primene. Adhezivna svojstva materijala su određena na osnovu merenja mikrotvrdoće kompozita i to primenom različitih opterećenja kako bi se procenio parametar adhezije koji pokazuje uticaj prevlake na podlogu. Upoređeno je kako se vezuje čista matrica od fotopolimerizujućeg akrilata sa podlogom od stomatološke legure sa vezivanjem za staklenu podlogu. Potom je upoređeno kako se vezuju kompozitni materijali na obe podloge. Adhezija je određena i na osnovu promene ugla kvašenja između kompozita i rezultati su upoređeni sa rezultatima mikroindentacije. Pokazalo se da dodatak kompozitnih čestica kao ojačanja u matricu od akrilata povećava adhezivna svojstva kompozita u odnosu na čistu matricu i da se ostvaruje bolja adhezija između kompozita i metalne podloge nego između kompozita i staklene podloge.
AB  - Polymer resins based on acrylates obtained from Bis-GMA (Bisphenol A glycide methacrylate), which is suitable for photopolymerization, are used in dentistry for various purposes due to the ease of application and the possibility to influence their properties by adding reinforcements of different shapes, crystal structure and chemical compositions. Reinforcement in the form of particles based on MgAlLDH (layered double hydroxide) deposited on silica obtained from rice husks on two substrates. A metal base and glass were used. The adhesive properties are important in order to see the possibility of using these materials in applications. In order to measure the adhesive properties of the material, the composite microhardness measurement method is used by applying different loads in order to evaluate the adhesion parameter that shows the effect of the coating on the substrate. It was compared to how a pure photopolymerizing acrylate matrix bonds with a chromium-based dental alloy substrate that is used in the production of different parts of dentures by bonding to a glass substrate. Then, it was compared how composite materials are bonded to both substrates. Adhesion was monitored through the change in wetting angle between the composites, and the results were compared with the results of microindentation. It was shown that the addition of composite particles increases the adhesive properties of the composite compared to the pure matrix and that better adhesion is achieved between the composite and the metal substrate than between the composite and the glass substrate.
T2  - Tehnika
T1  - Ispitivanje prianjanja fotopolimerizujućih akrilata ojačanih česticama MgAlLDH@SiO2 na stomatološkoj hromiranoj leguri i na staklu
T1  - Adhesion testing of photopolymerizing acrylates reinforced with MgAlLDH@SiO2 particles on dental chromium alloy and on glass
VL  - 79
IS  - 1
SP  - 9
EP  - 13
DO  - 10.5937/tehnika2401009V
ER  - 

@article{
author = "Vuksanović, Marija M. and Mladenović, Ivana and Radovanović, Željko and Živković, Predrag and Savić, Andrija B. and Marinković, Aleksandar and Jančić-Heinemann, Radmila",
year = "2024",
abstract = "Polimerne smole na bazi akrilata dobijene iz Bis-GMA (Bisfenol A glicidmetakrilat), koji je pogodan za fotopolimerizaciju, koriste se u stomatologiji za različite namene zbog lakoće nanošenja i mogućnosti da se utiče na njihova svojstva dodavanjem ojačanja različitog oblika i hemijskog sastava. Sintetisano je ojačanje u formi čestica na bazi dvostrukih slojevitih hidroksida magnezijuma i aluminijuma (MgAlLDH-Layered Double Hidroxides) nataloženih na silicijum dioksidu dobijenom iz ljuski pirinča. Kao podloge korišćene su metalna legura na bazi hroma i molibdena za primenu u stomatologiji i staklo u formi podloga za mikroskopske preparate. Adhezivna svojstva kompozita su bitna sa aspekta njihove primene. Adhezivna svojstva materijala su određena na osnovu merenja mikrotvrdoće kompozita i to primenom različitih opterećenja kako bi se procenio parametar adhezije koji pokazuje uticaj prevlake na podlogu. Upoređeno je kako se vezuje čista matrica od fotopolimerizujućeg akrilata sa podlogom od stomatološke legure sa vezivanjem za staklenu podlogu. Potom je upoređeno kako se vezuju kompozitni materijali na obe podloge. Adhezija je određena i na osnovu promene ugla kvašenja između kompozita i rezultati su upoređeni sa rezultatima mikroindentacije. Pokazalo se da dodatak kompozitnih čestica kao ojačanja u matricu od akrilata povećava adhezivna svojstva kompozita u odnosu na čistu matricu i da se ostvaruje bolja adhezija između kompozita i metalne podloge nego između kompozita i staklene podloge., Polymer resins based on acrylates obtained from Bis-GMA (Bisphenol A glycide methacrylate), which is suitable for photopolymerization, are used in dentistry for various purposes due to the ease of application and the possibility to influence their properties by adding reinforcements of different shapes, crystal structure and chemical compositions. Reinforcement in the form of particles based on MgAlLDH (layered double hydroxide) deposited on silica obtained from rice husks on two substrates. A metal base and glass were used. The adhesive properties are important in order to see the possibility of using these materials in applications. In order to measure the adhesive properties of the material, the composite microhardness measurement method is used by applying different loads in order to evaluate the adhesion parameter that shows the effect of the coating on the substrate. It was compared to how a pure photopolymerizing acrylate matrix bonds with a chromium-based dental alloy substrate that is used in the production of different parts of dentures by bonding to a glass substrate. Then, it was compared how composite materials are bonded to both substrates. Adhesion was monitored through the change in wetting angle between the composites, and the results were compared with the results of microindentation. It was shown that the addition of composite particles increases the adhesive properties of the composite compared to the pure matrix and that better adhesion is achieved between the composite and the metal substrate than between the composite and the glass substrate.",
journal = "Tehnika",
title = "Ispitivanje prianjanja fotopolimerizujućih akrilata ojačanih česticama MgAlLDH@SiO2 na stomatološkoj hromiranoj leguri i na staklu, Adhesion testing of photopolymerizing acrylates reinforced with MgAlLDH@SiO2 particles on dental chromium alloy and on glass",
volume = "79",
number = "1",
pages = "9-13",
doi = "10.5937/tehnika2401009V"
}

Vuksanović, M. M., Mladenović, I., Radovanović, Ž., Živković, P., Savić, A. B., Marinković, A.,& Jančić-Heinemann, R.. (2024). Ispitivanje prianjanja fotopolimerizujućih akrilata ojačanih česticama MgAlLDH@SiO2 na stomatološkoj hromiranoj leguri i na staklu. in Tehnika, 79(1), 9-13.
https://doi.org/10.5937/tehnika2401009V

Vuksanović MM, Mladenović I, Radovanović Ž, Živković P, Savić AB, Marinković A, Jančić-Heinemann R. Ispitivanje prianjanja fotopolimerizujućih akrilata ojačanih česticama MgAlLDH@SiO2 na stomatološkoj hromiranoj leguri i na staklu. in Tehnika. 2024;79(1):9-13.
doi:10.5937/tehnika2401009V .

Vuksanović, Marija M., Mladenović, Ivana, Radovanović, Željko, Živković, Predrag, Savić, Andrija B., Marinković, Aleksandar, Jančić-Heinemann, Radmila, "Ispitivanje prianjanja fotopolimerizujućih akrilata ojačanih česticama MgAlLDH@SiO2 na stomatološkoj hromiranoj leguri i na staklu" in Tehnika, 79, no. 1 (2024):9-13,
https://doi.org/10.5937/tehnika2401009V . .

TY  - JOUR
AU  - Buha-Marković, Jovana
AU  - Marinković, Ana
AU  - Savić, Jasmina
AU  - Krstić, Aleksandar
AU  - Savić, Andrija
AU  - Ristic, Mirjana
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12283
AB  - Lignite and coal waste used as feed fuels in thermal power plants (TPPs) and semi-industrial fluidized bed boiler (FBB), as well as their representative fly ashes (FAs), were examined. Fly ashes were compared employing anions and cations content in correspondent water extracts, trace elements and polycyclic aromatic hydrocarbon concentrations, as well as health risk assessments of substances known to be of concern for public health. Fluoride and sulfate contents in water extracted FAs are far below the legislation limits for waste, classifying all investigated FAs as non-hazardous. Among investigated trace elements, Cd content is the lowest, while Mn content is the highest. The highest enrichment ratios are noticed for As, Pb, Hg, Cu, V and Cr. The results indicate that total PAHs content is elevated in FA from the combustion of coal waste (AFB), with fluoranthene prevailing. The cancer risk of As and the non-cancer risk of As and Ni in some FAs surpass their respective permissible limits. The incremental lifetime cancer risk of an adult population indicates a potential PAHs risk in AFB, whereas all other fly ashes are within safe limits.
AB  - У овом раду, испитивана су горива (лигнит и отпадни угаљ) која се користе у термоелектранама и полуиндустријском постројењу са флуидизованим слојем, као и летећи пепели добијени њиховим сагоревањем. Летећи пепели су упоређени на основу: садржаја анјона и катјона у њиховим воденим екстрактима, концентрације елемената у траговима и полицикличних ароматичних угљоводоника (PAH), као и процене здравственог ризика који потиче од претходно поменутих потенцијално опасних супстанци. Садржај флуорида и сулфата у воденим екстрактима летећих пепела далеко је испод законски дозвољених граница за отпад, на основу чега се могу сврстати у безопасне. Од испитиваних елемената у траговима, садржај Cd је најнижи, док је концентрација Mn највиша. Највеће обогаћење пепела у односу на одговарајући угаљ, примећено је за As, Pb, Hg, Cu, V и Cr. На основу добијених резултата показано је да је укупни садржај PAH највећи за летећи пепео добијен сагоревањем отпадног угља. Међу испитиваним PAH, највишу концентрацију има флуорантен. Ризици који потичу од арсена (међу канцерогеним елементима), као и арсена и никла (међу неканцерогеним елементима), премашују дозвољене граничне вредности. Вредност процењеног ризика од рака код одрасле популације у случају PAH, показује да за летећи пепео добијен сагоревањем отпадног угља постоји потенцијални ризик, док су вредности за остале пепеле унутар дозвољених граница.
T2  - Journal of the Serbian Chemical Society
T1  - Health risk assessment of potentially harmful substances from fly ashes generated by coal and coal waste combustion
T1  - Процена ризика за потенцијално опасне супстанце из летећих пепела добијених сагоревањем угља и отпадног угља
VL  - 88
IS  - 11
SP  - 1161
EP  - 1173
DO  - 10.2298/JSC220130048M
ER  - 

@article{
author = "Buha-Marković, Jovana and Marinković, Ana and Savić, Jasmina and Krstić, Aleksandar and Savić, Andrija and Ristic, Mirjana",
year = "2023",
abstract = "Lignite and coal waste used as feed fuels in thermal power plants (TPPs) and semi-industrial fluidized bed boiler (FBB), as well as their representative fly ashes (FAs), were examined. Fly ashes were compared employing anions and cations content in correspondent water extracts, trace elements and polycyclic aromatic hydrocarbon concentrations, as well as health risk assessments of substances known to be of concern for public health. Fluoride and sulfate contents in water extracted FAs are far below the legislation limits for waste, classifying all investigated FAs as non-hazardous. Among investigated trace elements, Cd content is the lowest, while Mn content is the highest. The highest enrichment ratios are noticed for As, Pb, Hg, Cu, V and Cr. The results indicate that total PAHs content is elevated in FA from the combustion of coal waste (AFB), with fluoranthene prevailing. The cancer risk of As and the non-cancer risk of As and Ni in some FAs surpass their respective permissible limits. The incremental lifetime cancer risk of an adult population indicates a potential PAHs risk in AFB, whereas all other fly ashes are within safe limits., У овом раду, испитивана су горива (лигнит и отпадни угаљ) која се користе у термоелектранама и полуиндустријском постројењу са флуидизованим слојем, као и летећи пепели добијени њиховим сагоревањем. Летећи пепели су упоређени на основу: садржаја анјона и катјона у њиховим воденим екстрактима, концентрације елемената у траговима и полицикличних ароматичних угљоводоника (PAH), као и процене здравственог ризика који потиче од претходно поменутих потенцијално опасних супстанци. Садржај флуорида и сулфата у воденим екстрактима летећих пепела далеко је испод законски дозвољених граница за отпад, на основу чега се могу сврстати у безопасне. Од испитиваних елемената у траговима, садржај Cd је најнижи, док је концентрација Mn највиша. Највеће обогаћење пепела у односу на одговарајући угаљ, примећено је за As, Pb, Hg, Cu, V и Cr. На основу добијених резултата показано је да је укупни садржај PAH највећи за летећи пепео добијен сагоревањем отпадног угља. Међу испитиваним PAH, највишу концентрацију има флуорантен. Ризици који потичу од арсена (међу канцерогеним елементима), као и арсена и никла (међу неканцерогеним елементима), премашују дозвољене граничне вредности. Вредност процењеног ризика од рака код одрасле популације у случају PAH, показује да за летећи пепео добијен сагоревањем отпадног угља постоји потенцијални ризик, док су вредности за остале пепеле унутар дозвољених граница.",
journal = "Journal of the Serbian Chemical Society",
title = "Health risk assessment of potentially harmful substances from fly ashes generated by coal and coal waste combustion, Процена ризика за потенцијално опасне супстанце из летећих пепела добијених сагоревањем угља и отпадног угља",
volume = "88",
number = "11",
pages = "1161-1173",
doi = "10.2298/JSC220130048M"
}

Buha-Marković, J., Marinković, A., Savić, J., Krstić, A., Savić, A.,& Ristic, M.. (2023). Health risk assessment of potentially harmful substances from fly ashes generated by coal and coal waste combustion. in Journal of the Serbian Chemical Society, 88(11), 1161-1173.
https://doi.org/10.2298/JSC220130048M

Buha-Marković J, Marinković A, Savić J, Krstić A, Savić A, Ristic M. Health risk assessment of potentially harmful substances from fly ashes generated by coal and coal waste combustion. in Journal of the Serbian Chemical Society. 2023;88(11):1161-1173.
doi:10.2298/JSC220130048M .

Buha-Marković, Jovana, Marinković, Ana, Savić, Jasmina, Krstić, Aleksandar, Savić, Andrija, Ristic, Mirjana, "Health risk assessment of potentially harmful substances from fly ashes generated by coal and coal waste combustion" in Journal of the Serbian Chemical Society, 88, no. 11 (2023):1161-1173,
https://doi.org/10.2298/JSC220130048M . .

TY  - CONF
AU  - Egelja, Adela
AU  - Savić, Andrija
AU  - Šaponjić, Aleksandra
AU  - Kokunešoski, Maja
AU  - Ilić, Svetlana
AU  - Vuksanović, Marija M.
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10662
AB  - In present study FEAL-LDH@SIO2 were Used for removing phosphate from aqueous solutions. FeAl-LDH with molar ratio Fe/Al = 3/1 was synthesized by co- precipitation from aqueous solutions in the present of SIO2 PARTICLES. Silica obtained from rice husks were used as a substrate for the deposition of LDH particles. The prepared material was characterized by scanning electron microscope (FE-SEM), X-ray diffraction (XRD), N2 adsorption/desorption isotherms (BET method) and Fourier transform infrared spectroscopy (FTIR). XRD analysis showed that Fe-Al had formed LDH structure. SEM analysis revealed deposition of LDH particles on SIO2 SUBSTRATE. The adsorption characteristics for phosphate uptake of the obtained material were performed. Adsorption experiments were carried out as a function of LDHs dosage with three different mass ratios of LDH/silica = 1/1, 2/1, and 3/1 and different phosphate concentration AT INITIAL PH 4. Phosphate concentrations were determined using spectrophotometer. The results showed that the maximum sorption capacities of phosphates calculated based on Langmuir equation was 52.68 mg g-1.
PB  - Banja Luka : University PIM
C3  - XI International conference on social and technological development - STED 2022 : book of abstracts, Trebinje, June 2-5, 2022
T1  - Application of FeAl-LDH@SiO2 for Phosphate Removal from Water
SP  - 91
UR  - https://hdl.handle.net/21.15107/rcub_vinar_10662
ER  - 

@conference{
author = "Egelja, Adela and Savić, Andrija and Šaponjić, Aleksandra and Kokunešoski, Maja and Ilić, Svetlana and Vuksanović, Marija M.",
year = "2022",
abstract = "In present study FEAL-LDH@SIO2 were Used for removing phosphate from aqueous solutions. FeAl-LDH with molar ratio Fe/Al = 3/1 was synthesized by co- precipitation from aqueous solutions in the present of SIO2 PARTICLES. Silica obtained from rice husks were used as a substrate for the deposition of LDH particles. The prepared material was characterized by scanning electron microscope (FE-SEM), X-ray diffraction (XRD), N2 adsorption/desorption isotherms (BET method) and Fourier transform infrared spectroscopy (FTIR). XRD analysis showed that Fe-Al had formed LDH structure. SEM analysis revealed deposition of LDH particles on SIO2 SUBSTRATE. The adsorption characteristics for phosphate uptake of the obtained material were performed. Adsorption experiments were carried out as a function of LDHs dosage with three different mass ratios of LDH/silica = 1/1, 2/1, and 3/1 and different phosphate concentration AT INITIAL PH 4. Phosphate concentrations were determined using spectrophotometer. The results showed that the maximum sorption capacities of phosphates calculated based on Langmuir equation was 52.68 mg g-1.",
publisher = "Banja Luka : University PIM",
journal = "XI International conference on social and technological development - STED 2022 : book of abstracts, Trebinje, June 2-5, 2022",
title = "Application of FeAl-LDH@SiO2 for Phosphate Removal from Water",
pages = "91",
url = "https://hdl.handle.net/21.15107/rcub_vinar_10662"
}

Egelja, A., Savić, A., Šaponjić, A., Kokunešoski, M., Ilić, S.,& Vuksanović, M. M.. (2022). Application of FeAl-LDH@SiO2 for Phosphate Removal from Water. in XI International conference on social and technological development - STED 2022 : book of abstracts, Trebinje, June 2-5, 2022
Banja Luka : University PIM., 91.
https://hdl.handle.net/21.15107/rcub_vinar_10662

Egelja A, Savić A, Šaponjić A, Kokunešoski M, Ilić S, Vuksanović MM. Application of FeAl-LDH@SiO2 for Phosphate Removal from Water. in XI International conference on social and technological development - STED 2022 : book of abstracts, Trebinje, June 2-5, 2022. 2022;:91.
https://hdl.handle.net/21.15107/rcub_vinar_10662 .

Egelja, Adela, Savić, Andrija, Šaponjić, Aleksandra, Kokunešoski, Maja, Ilić, Svetlana, Vuksanović, Marija M., "Application of FeAl-LDH@SiO2 for Phosphate Removal from Water" in XI International conference on social and technological development - STED 2022 : book of abstracts, Trebinje, June 2-5, 2022 (2022):91,
https://hdl.handle.net/21.15107/rcub_vinar_10662 .

TY  - CONF
AU  - Vuksanović, Marija M.
AU  - Egelja, Adela
AU  - Savić, Andrija
AU  - Milošević, Milena
AU  - Mladenović, Ivana
AU  - Marinković, Aleksandar D.
AU  - Jančić Heinemann, Radmila M.
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10663
AB  - Silica particles were produced form rice husk and used as reinforcement in the polymer matrix. The obtained silica particles' surfaces were modified with layered double hydroxides, which enabled better reinforcement in the PMMA matrix. Coprecipitation was used to synthetize Fe Al layered double hydroxides (LDH) with a Fe:Al cation content of 3:1 and an FeAl-LDH: silica ratio of 1:1. X-ray diffraction, Fourier transform infrared spectroscopy (FTIR), and scanning electron microscopy with EDS were used to characterize the synthesized particles. The prepared particle amounts in the PMMA matrix were 1, 3, and 5 wt. %. The purpose of this study was to see if the obtained SiO2 particles, as well as their modification with FeAl-LDH, had any effect on the mechanical properties of polymer composite materials. The mechanical characterization of obtained composites was done using Vickers microindentation tests and impact testing. The Vickers micro-hardness test showed that the addition of reinforcement increases the hardness of the composite. When compared to the matrix, the toughness of the composite material with a higher content of particles (5 wt. %) in the energy absorbed in this impact test was three times higher.
PB  - Banja Luka : University PIM
C3  - XI International conference on social and technological development - STED 2022 : book of abstracts, Trebinje, June 2-5, 2022
T1  - Mechanical Properties of Composite Material Reinforced With Silica Particles Obtained from Biomass Modified With Double-Layered Hydroxides
SP  - 108
UR  - https://hdl.handle.net/21.15107/rcub_vinar_10663
ER  - 

@conference{
author = "Vuksanović, Marija M. and Egelja, Adela and Savić, Andrija and Milošević, Milena and Mladenović, Ivana and Marinković, Aleksandar D. and Jančić Heinemann, Radmila M.",
year = "2022",
abstract = "Silica particles were produced form rice husk and used as reinforcement in the polymer matrix. The obtained silica particles' surfaces were modified with layered double hydroxides, which enabled better reinforcement in the PMMA matrix. Coprecipitation was used to synthetize Fe Al layered double hydroxides (LDH) with a Fe:Al cation content of 3:1 and an FeAl-LDH: silica ratio of 1:1. X-ray diffraction, Fourier transform infrared spectroscopy (FTIR), and scanning electron microscopy with EDS were used to characterize the synthesized particles. The prepared particle amounts in the PMMA matrix were 1, 3, and 5 wt. %. The purpose of this study was to see if the obtained SiO2 particles, as well as their modification with FeAl-LDH, had any effect on the mechanical properties of polymer composite materials. The mechanical characterization of obtained composites was done using Vickers microindentation tests and impact testing. The Vickers micro-hardness test showed that the addition of reinforcement increases the hardness of the composite. When compared to the matrix, the toughness of the composite material with a higher content of particles (5 wt. %) in the energy absorbed in this impact test was three times higher.",
publisher = "Banja Luka : University PIM",
journal = "XI International conference on social and technological development - STED 2022 : book of abstracts, Trebinje, June 2-5, 2022",
title = "Mechanical Properties of Composite Material Reinforced With Silica Particles Obtained from Biomass Modified With Double-Layered Hydroxides",
pages = "108",
url = "https://hdl.handle.net/21.15107/rcub_vinar_10663"
}

Vuksanović, M. M., Egelja, A., Savić, A., Milošević, M., Mladenović, I., Marinković, A. D.,& Jančić Heinemann, R. M.. (2022). Mechanical Properties of Composite Material Reinforced With Silica Particles Obtained from Biomass Modified With Double-Layered Hydroxides. in XI International conference on social and technological development - STED 2022 : book of abstracts, Trebinje, June 2-5, 2022
Banja Luka : University PIM., 108.
https://hdl.handle.net/21.15107/rcub_vinar_10663

Vuksanović MM, Egelja A, Savić A, Milošević M, Mladenović I, Marinković AD, Jančić Heinemann RM. Mechanical Properties of Composite Material Reinforced With Silica Particles Obtained from Biomass Modified With Double-Layered Hydroxides. in XI International conference on social and technological development - STED 2022 : book of abstracts, Trebinje, June 2-5, 2022. 2022;:108.
https://hdl.handle.net/21.15107/rcub_vinar_10663 .

Vuksanović, Marija M., Egelja, Adela, Savić, Andrija, Milošević, Milena, Mladenović, Ivana, Marinković, Aleksandar D., Jančić Heinemann, Radmila M., "Mechanical Properties of Composite Material Reinforced With Silica Particles Obtained from Biomass Modified With Double-Layered Hydroxides" in XI International conference on social and technological development - STED 2022 : book of abstracts, Trebinje, June 2-5, 2022 (2022):108,
https://hdl.handle.net/21.15107/rcub_vinar_10663 .

TY  - CONF
AU  - Živković, Ljiljana
AU  - Savić, Andrija
AU  - Castvan-Janković, Ivona
AU  - Lazarević, Slavica
AU  - Rogan, Jelena
AU  - Babić, Biljana
AU  - Petrović, Rada
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10664
AB  - Carbon cryogel (CC) was impregnated with magnetite to produce a multifunctional magnetic adsorbent capable of removing phenoles and phosphates from water. Adsorbents were prepared via co-precipitation of Fe2+ and Fe3+ ions in aqueous solution in the presence of CC. Non-treated or acid-activated CC was used. The CC: Fe3O4 ratios of 1:1 and 3:1 were applied. The addition of HCl in the synthesis process was also investigated. XRD confirmed the formation of nanocrystalline magnetite. BET analysis showed that the pre-treatment diminished the CC porous structure, reducing also specific surface area (Sp). Formation of magnetite decreases Sp and total volume of micro and meso pores, but their distribution remained unchanged. FTIR spectra revealed that magnetite was attached to the surface of the acid activated CC via C═O bond. DTA-TGA and SEM indicated that acid treatment and presence of HCl were beneficial for homogeneous nucleation and distribution of magnetite, increasing adsorption properties of composite. Batch adsorption proved that the maximum adsorption capacity for phenoles was accomplished with 3:1 ratio with non-treated CC. Samples synthesized with pre- treated CC, under 1:1 ratio, gave the best results for phosphate removal. The CC/magnetite composite was found as promising adsorbent for the simultaneous removal of both polutants.
PB  - Banja Luka : University PIM
C3  - XI International conference on social and technological development - STED 2022 : book of abstracts, Trebinje, June 2-5, 2022
T1  - Carbon Cryogel Magnetite Composites-Effective Adsorbents for the Phosphate and Phenol Removal from Water
SP  - 92
UR  - https://hdl.handle.net/21.15107/rcub_vinar_10664
ER  - 

@conference{
author = "Živković, Ljiljana and Savić, Andrija and Castvan-Janković, Ivona and Lazarević, Slavica and Rogan, Jelena and Babić, Biljana and Petrović, Rada",
year = "2022",
abstract = "Carbon cryogel (CC) was impregnated with magnetite to produce a multifunctional magnetic adsorbent capable of removing phenoles and phosphates from water. Adsorbents were prepared via co-precipitation of Fe2+ and Fe3+ ions in aqueous solution in the presence of CC. Non-treated or acid-activated CC was used. The CC: Fe3O4 ratios of 1:1 and 3:1 were applied. The addition of HCl in the synthesis process was also investigated. XRD confirmed the formation of nanocrystalline magnetite. BET analysis showed that the pre-treatment diminished the CC porous structure, reducing also specific surface area (Sp). Formation of magnetite decreases Sp and total volume of micro and meso pores, but their distribution remained unchanged. FTIR spectra revealed that magnetite was attached to the surface of the acid activated CC via C═O bond. DTA-TGA and SEM indicated that acid treatment and presence of HCl were beneficial for homogeneous nucleation and distribution of magnetite, increasing adsorption properties of composite. Batch adsorption proved that the maximum adsorption capacity for phenoles was accomplished with 3:1 ratio with non-treated CC. Samples synthesized with pre- treated CC, under 1:1 ratio, gave the best results for phosphate removal. The CC/magnetite composite was found as promising adsorbent for the simultaneous removal of both polutants.",
publisher = "Banja Luka : University PIM",
journal = "XI International conference on social and technological development - STED 2022 : book of abstracts, Trebinje, June 2-5, 2022",
title = "Carbon Cryogel Magnetite Composites-Effective Adsorbents for the Phosphate and Phenol Removal from Water",
pages = "92",
url = "https://hdl.handle.net/21.15107/rcub_vinar_10664"
}

Živković, L., Savić, A., Castvan-Janković, I., Lazarević, S., Rogan, J., Babić, B.,& Petrović, R.. (2022). Carbon Cryogel Magnetite Composites-Effective Adsorbents for the Phosphate and Phenol Removal from Water. in XI International conference on social and technological development - STED 2022 : book of abstracts, Trebinje, June 2-5, 2022
Banja Luka : University PIM., 92.
https://hdl.handle.net/21.15107/rcub_vinar_10664

Živković L, Savić A, Castvan-Janković I, Lazarević S, Rogan J, Babić B, Petrović R. Carbon Cryogel Magnetite Composites-Effective Adsorbents for the Phosphate and Phenol Removal from Water. in XI International conference on social and technological development - STED 2022 : book of abstracts, Trebinje, June 2-5, 2022. 2022;:92.
https://hdl.handle.net/21.15107/rcub_vinar_10664 .

Živković, Ljiljana, Savić, Andrija, Castvan-Janković, Ivona, Lazarević, Slavica, Rogan, Jelena, Babić, Biljana, Petrović, Rada, "Carbon Cryogel Magnetite Composites-Effective Adsorbents for the Phosphate and Phenol Removal from Water" in XI International conference on social and technological development - STED 2022 : book of abstracts, Trebinje, June 2-5, 2022 (2022):92,
https://hdl.handle.net/21.15107/rcub_vinar_10664 .

TY  - JOUR
AU  - Omerašević, Mia
AU  - Lukić, Miodrag
AU  - Savić-Biserčić, Marjetka
AU  - Savić, Andrija B.
AU  - Matović, Ljiljana
AU  - Baščarević, Zvezdana D.
AU  - Bučevac, Dušan
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8563
AB  - A promising method for removal of Cs ions from water and their incorporation into stable crystal structure ready for safe and permanent disposal was described. Cs-exchanged X zeolite was hot-pressed at temperature ranging from 800 to 950 °C to fabricate dense pollucite ceramics. It was found that the application of external pressure reduced the pollucite formation temperature. The effect of sintering temperature on density, phase composition and mechanical properties was investigated. The highest density of 92.5 %TD and the highest compressive strength of 79 MPa were measured in pollucite hot-pressed at 950 °C for 3 h. Heterogeneity of samples obtained at 950 °C was determined using scanning electron microscopy. The pollucite hot-pressed at 950 °C had low linear thermal expansion coefficient of ∼4.67 × 10−6 K−1 in the temperature range from 100 to 1000 °C. © 2019
T2  - Nuclear Engineering and Technology
T1  - Permanent disposal of Cs ions in the form of dense pollucite ceramics having low thermal expansion coefficient
VL  - 52
IS  - 1
SP  - 115
EP  - 122
DO  - 10.1016/j.net.2019.07.001
ER  - 

@article{
author = "Omerašević, Mia and Lukić, Miodrag and Savić-Biserčić, Marjetka and Savić, Andrija B. and Matović, Ljiljana and Baščarević, Zvezdana D. and Bučevac, Dušan",
year = "2020",
abstract = "A promising method for removal of Cs ions from water and their incorporation into stable crystal structure ready for safe and permanent disposal was described. Cs-exchanged X zeolite was hot-pressed at temperature ranging from 800 to 950 °C to fabricate dense pollucite ceramics. It was found that the application of external pressure reduced the pollucite formation temperature. The effect of sintering temperature on density, phase composition and mechanical properties was investigated. The highest density of 92.5 %TD and the highest compressive strength of 79 MPa were measured in pollucite hot-pressed at 950 °C for 3 h. Heterogeneity of samples obtained at 950 °C was determined using scanning electron microscopy. The pollucite hot-pressed at 950 °C had low linear thermal expansion coefficient of ∼4.67 × 10−6 K−1 in the temperature range from 100 to 1000 °C. © 2019",
journal = "Nuclear Engineering and Technology",
title = "Permanent disposal of Cs ions in the form of dense pollucite ceramics having low thermal expansion coefficient",
volume = "52",
number = "1",
pages = "115-122",
doi = "10.1016/j.net.2019.07.001"
}

Omerašević, M., Lukić, M., Savić-Biserčić, M., Savić, A. B., Matović, L., Baščarević, Z. D.,& Bučevac, D.. (2020). Permanent disposal of Cs ions in the form of dense pollucite ceramics having low thermal expansion coefficient. in Nuclear Engineering and Technology, 52(1), 115-122.
https://doi.org/10.1016/j.net.2019.07.001

Omerašević M, Lukić M, Savić-Biserčić M, Savić AB, Matović L, Baščarević ZD, Bučevac D. Permanent disposal of Cs ions in the form of dense pollucite ceramics having low thermal expansion coefficient. in Nuclear Engineering and Technology. 2020;52(1):115-122.
doi:10.1016/j.net.2019.07.001 .

Omerašević, Mia, Lukić, Miodrag, Savić-Biserčić, Marjetka, Savić, Andrija B., Matović, Ljiljana, Baščarević, Zvezdana D., Bučevac, Dušan, "Permanent disposal of Cs ions in the form of dense pollucite ceramics having low thermal expansion coefficient" in Nuclear Engineering and Technology, 52, no. 1 (2020):115-122,
https://doi.org/10.1016/j.net.2019.07.001 . .

TY  - JOUR
AU  - Savić, Andrija B.
AU  - Čokeša, Đuro
AU  - Savić-Biserčić, Marjetka
AU  - Janković-Častvan, Ivona
AU  - Petrović, Rada
AU  - Živković, Ljiljana
PY  - 2019
UR  - https://linkinghub.elsevier.com/retrieve/pii/S0921883119301529
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8221
AB  - Natural filtration material tuff (T) was modified by coating with nano-sized magnetite. The grain fraction of 0.6–1.9 mm was submitted to hydrothermal synthesis of magnetite. Thus formed magnetite modified tuff (MMT) was characterized in terms of Fe-content, N2 adsorption- desorption isotherm, SEM, zeta potential-pH analyses and adsorption behavior towards phosphates/arsenates in batch and column conditions. Elemental analysis showed that 36.54 mg g−1 of magnetite was attached to the porous tuff grains. This modification changed pore structure and specific surface area. An increase of cca 35% in Sp value was obtained. Batch experiments proved that MMT was 4-5 times more efficient in removal of phosphates/arsenates than non-modified T. The maximum sorption capacities of phosphates calculated based on Langmuir equation were 0.45 and 1.91 mg g−1, while those for arsenate were 0.551 m g−1 and 2.36 mg g−1 for T and MMT, respectively. The intra-particle diffusion model was the most suited for describing the adsorption process of phosphate and arsenate onto MMT. Fixed-bed column data corroborated batch results, i.e. MMT was 6 times superior in contaminant adsorption than T. Modification with magnetite improved T potential for usage in water treatment applications: its filtration ability remained unchanged, while adsorption capacity for phosphates/arsenates removal was improved. © 2019 The Society of Powder Technology Japan
T2  - Advanced Powder Technology
T1  - Multifunctional use of magnetite-coated tuff grains in water treatment: Removal of arsenates and phosphates
VL  - 30
IS  - 8
SP  - 1687
EP  - 1695
DO  - 10.1016/j.apt.2019.05.020
ER  - 

@article{
author = "Savić, Andrija B. and Čokeša, Đuro and Savić-Biserčić, Marjetka and Janković-Častvan, Ivona and Petrović, Rada and Živković, Ljiljana",
year = "2019",
abstract = "Natural filtration material tuff (T) was modified by coating with nano-sized magnetite. The grain fraction of 0.6–1.9 mm was submitted to hydrothermal synthesis of magnetite. Thus formed magnetite modified tuff (MMT) was characterized in terms of Fe-content, N2 adsorption- desorption isotherm, SEM, zeta potential-pH analyses and adsorption behavior towards phosphates/arsenates in batch and column conditions. Elemental analysis showed that 36.54 mg g−1 of magnetite was attached to the porous tuff grains. This modification changed pore structure and specific surface area. An increase of cca 35% in Sp value was obtained. Batch experiments proved that MMT was 4-5 times more efficient in removal of phosphates/arsenates than non-modified T. The maximum sorption capacities of phosphates calculated based on Langmuir equation were 0.45 and 1.91 mg g−1, while those for arsenate were 0.551 m g−1 and 2.36 mg g−1 for T and MMT, respectively. The intra-particle diffusion model was the most suited for describing the adsorption process of phosphate and arsenate onto MMT. Fixed-bed column data corroborated batch results, i.e. MMT was 6 times superior in contaminant adsorption than T. Modification with magnetite improved T potential for usage in water treatment applications: its filtration ability remained unchanged, while adsorption capacity for phosphates/arsenates removal was improved. © 2019 The Society of Powder Technology Japan",
journal = "Advanced Powder Technology",
title = "Multifunctional use of magnetite-coated tuff grains in water treatment: Removal of arsenates and phosphates",
volume = "30",
number = "8",
pages = "1687-1695",
doi = "10.1016/j.apt.2019.05.020"
}

Savić, A. B., Čokeša, Đ., Savić-Biserčić, M., Janković-Častvan, I., Petrović, R.,& Živković, L.. (2019). Multifunctional use of magnetite-coated tuff grains in water treatment: Removal of arsenates and phosphates. in Advanced Powder Technology, 30(8), 1687-1695.
https://doi.org/10.1016/j.apt.2019.05.020

Savić AB, Čokeša Đ, Savić-Biserčić M, Janković-Častvan I, Petrović R, Živković L. Multifunctional use of magnetite-coated tuff grains in water treatment: Removal of arsenates and phosphates. in Advanced Powder Technology. 2019;30(8):1687-1695.
doi:10.1016/j.apt.2019.05.020 .

Savić, Andrija B., Čokeša, Đuro, Savić-Biserčić, Marjetka, Janković-Častvan, Ivona, Petrović, Rada, Živković, Ljiljana, "Multifunctional use of magnetite-coated tuff grains in water treatment: Removal of arsenates and phosphates" in Advanced Powder Technology, 30, no. 8 (2019):1687-1695,
https://doi.org/10.1016/j.apt.2019.05.020 . .

TY  - JOUR
AU  - Savić-Biserčić, Marjetka
AU  - Pezo, Lato
AU  - Ignjatović, Ivana Sredović
AU  - Ignjatović, Ljubiša M.
AU  - Savić, Andrija B.
AU  - Jovanović, Uroš D.
AU  - Andrić, Velibor
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1220
AB  - Two mechanical extraction techniques were used for the extraction of environmentaly interesting components of coal fly ash: shaking, during which the extraction process lasted from 6 up to 24 h, and sonication that lasted from 15 up to 60 min, using water as extractant. The concentration of anions in fly ash extracts was determined by ion chromatography, while atomic absorption spectrometry was used for determination of: As, Pb, Cd, Ni, Cr, Zn, Cu, Fe, Mn and Al. The ultrasonication yielded slightly higher amounts of extracted anions as well as Pb, Al, Mn and Fe cations, while shaking-assisted extraction was more efficient for the Cr, As, Zn and Ni ions. The changes in pH value, particle size distribution within colloid solution, zeta potential and conductivity during ultrasound-assisted extraction were measured in order to explain changes that occur on the surface of fly ash particles contacting water and different processes (adsorption, ion exchange and flocculation) that develop under natural conditions. Principal Component Analysis was used for assessing the effect of observed process parameters. It is essential to evaluate quantity of these elements leachable from coal fly ash into the surface waters in natural conditions in order to prevent contamination of the environment.
T2  - Journal of the Serbian Chemical Society
T1  - Ultrasound and shacking-assisted water-leaching of anions and cations from fly ash
VL  - 81
IS  - 7
SP  - 813
EP  - 827
DO  - 10.2298/JSC151222027B
ER  - 

@article{
author = "Savić-Biserčić, Marjetka and Pezo, Lato and Ignjatović, Ivana Sredović and Ignjatović, Ljubiša M. and Savić, Andrija B. and Jovanović, Uroš D. and Andrić, Velibor",
year = "2016",
abstract = "Two mechanical extraction techniques were used for the extraction of environmentaly interesting components of coal fly ash: shaking, during which the extraction process lasted from 6 up to 24 h, and sonication that lasted from 15 up to 60 min, using water as extractant. The concentration of anions in fly ash extracts was determined by ion chromatography, while atomic absorption spectrometry was used for determination of: As, Pb, Cd, Ni, Cr, Zn, Cu, Fe, Mn and Al. The ultrasonication yielded slightly higher amounts of extracted anions as well as Pb, Al, Mn and Fe cations, while shaking-assisted extraction was more efficient for the Cr, As, Zn and Ni ions. The changes in pH value, particle size distribution within colloid solution, zeta potential and conductivity during ultrasound-assisted extraction were measured in order to explain changes that occur on the surface of fly ash particles contacting water and different processes (adsorption, ion exchange and flocculation) that develop under natural conditions. Principal Component Analysis was used for assessing the effect of observed process parameters. It is essential to evaluate quantity of these elements leachable from coal fly ash into the surface waters in natural conditions in order to prevent contamination of the environment.",
journal = "Journal of the Serbian Chemical Society",
title = "Ultrasound and shacking-assisted water-leaching of anions and cations from fly ash",
volume = "81",
number = "7",
pages = "813-827",
doi = "10.2298/JSC151222027B"
}

Savić-Biserčić, M., Pezo, L., Ignjatović, I. S., Ignjatović, L. M., Savić, A. B., Jovanović, U. D.,& Andrić, V.. (2016). Ultrasound and shacking-assisted water-leaching of anions and cations from fly ash. in Journal of the Serbian Chemical Society, 81(7), 813-827.
https://doi.org/10.2298/JSC151222027B

Savić-Biserčić M, Pezo L, Ignjatović IS, Ignjatović LM, Savić AB, Jovanović UD, Andrić V. Ultrasound and shacking-assisted water-leaching of anions and cations from fly ash. in Journal of the Serbian Chemical Society. 2016;81(7):813-827.
doi:10.2298/JSC151222027B .

Savić-Biserčić, Marjetka, Pezo, Lato, Ignjatović, Ivana Sredović, Ignjatović, Ljubiša M., Savić, Andrija B., Jovanović, Uroš D., Andrić, Velibor, "Ultrasound and shacking-assisted water-leaching of anions and cations from fly ash" in Journal of the Serbian Chemical Society, 81, no. 7 (2016):813-827,
https://doi.org/10.2298/JSC151222027B . .

TY  - JOUR
AU  - Savić, Andrija B.
AU  - Čokeša, Đuro
AU  - Lazarevic, Slavica
AU  - Jokić, Bojan M.
AU  - Janaćković, Đorđe T.
AU  - Petrović, Rada
AU  - Živković, Ljiljana
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1262
AB  - This study demonstrates that PEG-assisted hydrothermal synthesis provides a convenient and eco-friendly route to fabrication of mesoporous magnetite with enhanced capacity for phosphate removal, excellent potential for magnetic separation and good reusability. Adsorption of phosphate onto 4 laboratory prepared magnetite powders was investigated in a systematic manner. Powders were synthesized in poly(ethylene) glycol-free or assisted conditions (PEGs 400 and 20,000 at varied PEG/water ratio), and characterized in terms of crystalline structure, and magnetic, morphological, textural, and acid-base properties. PEG acted as a powerful pore forming agent, the PEG/water ratio being the key factor in developing the surface area and mesoporosity of magnetite. Uptake capacity for phosphates increased with an increase in surface area and pore volume. PEG 20,000 at a ratio of 3:1 gave the best result. This mesoporous (D-max = 11 nm), nano-scale ( LT 10 nm) magnetite was ca. 9 times more efficient than nonporous micrometric powder derived from PEG-free synthesis (Langmuir maximum capacity, q(m) = 26.2 vs. 3.0 mg g(-1)). The adsorption was pH-dependent, in accord with variations in zeta potential of magnetite. Opposite shifts of isoelectric point and point of zero charge confirmed specific adsorption of phosphates at water/magnetite interface which proceeded via replacement of surface hydroxyls and sulfates. (C) 2016 Elsevier B.V. All rights reserved.
T2  - Powder Technology
T1  - Tailoring of magnetite powder properties for enhanced phosphate removal: Effect of PEG addition in the synthesis process
VL  - 301
SP  - 511
EP  - 519
DO  - 10.1016/j.powtec.2016.06.028
ER  - 

@article{
author = "Savić, Andrija B. and Čokeša, Đuro and Lazarevic, Slavica and Jokić, Bojan M. and Janaćković, Đorđe T. and Petrović, Rada and Živković, Ljiljana",
year = "2016",
abstract = "This study demonstrates that PEG-assisted hydrothermal synthesis provides a convenient and eco-friendly route to fabrication of mesoporous magnetite with enhanced capacity for phosphate removal, excellent potential for magnetic separation and good reusability. Adsorption of phosphate onto 4 laboratory prepared magnetite powders was investigated in a systematic manner. Powders were synthesized in poly(ethylene) glycol-free or assisted conditions (PEGs 400 and 20,000 at varied PEG/water ratio), and characterized in terms of crystalline structure, and magnetic, morphological, textural, and acid-base properties. PEG acted as a powerful pore forming agent, the PEG/water ratio being the key factor in developing the surface area and mesoporosity of magnetite. Uptake capacity for phosphates increased with an increase in surface area and pore volume. PEG 20,000 at a ratio of 3:1 gave the best result. This mesoporous (D-max = 11 nm), nano-scale ( LT 10 nm) magnetite was ca. 9 times more efficient than nonporous micrometric powder derived from PEG-free synthesis (Langmuir maximum capacity, q(m) = 26.2 vs. 3.0 mg g(-1)). The adsorption was pH-dependent, in accord with variations in zeta potential of magnetite. Opposite shifts of isoelectric point and point of zero charge confirmed specific adsorption of phosphates at water/magnetite interface which proceeded via replacement of surface hydroxyls and sulfates. (C) 2016 Elsevier B.V. All rights reserved.",
journal = "Powder Technology",
title = "Tailoring of magnetite powder properties for enhanced phosphate removal: Effect of PEG addition in the synthesis process",
volume = "301",
pages = "511-519",
doi = "10.1016/j.powtec.2016.06.028"
}

Savić, A. B., Čokeša, Đ., Lazarevic, S., Jokić, B. M., Janaćković, Đ. T., Petrović, R.,& Živković, L.. (2016). Tailoring of magnetite powder properties for enhanced phosphate removal: Effect of PEG addition in the synthesis process. in Powder Technology, 301, 511-519.
https://doi.org/10.1016/j.powtec.2016.06.028

Savić AB, Čokeša Đ, Lazarevic S, Jokić BM, Janaćković ĐT, Petrović R, Živković L. Tailoring of magnetite powder properties for enhanced phosphate removal: Effect of PEG addition in the synthesis process. in Powder Technology. 2016;301:511-519.
doi:10.1016/j.powtec.2016.06.028 .

Savić, Andrija B., Čokeša, Đuro, Lazarevic, Slavica, Jokić, Bojan M., Janaćković, Đorđe T., Petrović, Rada, Živković, Ljiljana, "Tailoring of magnetite powder properties for enhanced phosphate removal: Effect of PEG addition in the synthesis process" in Powder Technology, 301 (2016):511-519,
https://doi.org/10.1016/j.powtec.2016.06.028 . .

TY  - JOUR
AU  - Izrael-Živković, Lidija T.
AU  - Živković, Ljiljana
AU  - Jokić, Bojan M.
AU  - Savić, Andrija B.
AU  - Karadzic, Ivanka M.
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/796
AB  - The impact of the surface charge of alumina supports on the adsorption of Candida rugosa lipase was investigated in terms of the zeta potentials of the adsorption partners. The lipase adhered onto alumina with similar efficiency under both repulsive and attractive electrostatic conditions, shifting the zeta potential of the support towards that of the enzyme. The behavior was explained by a heterogeneous distribution of the surface charge of the lipase molecule. Special emphasis in this study was placed on the effect of immobilization on the enzyme kinetics and principal reasons for enzyme immobilization: improvement in stability and potential for reuse. The enzyme affinity was not altered by its adsorption onto alumina, while the Vmax value of the lipase decreased. The thermostability of the adsorbed lipase was improved. A significant potential for reuse was found.
T2  - Journal of the Serbian Chemical Society
T1  - Adsorption of Candida rugosa lipase onto alumina: effect of surface charge
VL  - 80
IS  - 9
SP  - 1113
EP  - 1125
DO  - 10.2298/JSC150222035I
ER  - 

@article{
author = "Izrael-Živković, Lidija T. and Živković, Ljiljana and Jokić, Bojan M. and Savić, Andrija B. and Karadzic, Ivanka M.",
year = "2015",
abstract = "The impact of the surface charge of alumina supports on the adsorption of Candida rugosa lipase was investigated in terms of the zeta potentials of the adsorption partners. The lipase adhered onto alumina with similar efficiency under both repulsive and attractive electrostatic conditions, shifting the zeta potential of the support towards that of the enzyme. The behavior was explained by a heterogeneous distribution of the surface charge of the lipase molecule. Special emphasis in this study was placed on the effect of immobilization on the enzyme kinetics and principal reasons for enzyme immobilization: improvement in stability and potential for reuse. The enzyme affinity was not altered by its adsorption onto alumina, while the Vmax value of the lipase decreased. The thermostability of the adsorbed lipase was improved. A significant potential for reuse was found.",
journal = "Journal of the Serbian Chemical Society",
title = "Adsorption of Candida rugosa lipase onto alumina: effect of surface charge",
volume = "80",
number = "9",
pages = "1113-1125",
doi = "10.2298/JSC150222035I"
}

Izrael-Živković, L. T., Živković, L., Jokić, B. M., Savić, A. B.,& Karadzic, I. M.. (2015). Adsorption of Candida rugosa lipase onto alumina: effect of surface charge. in Journal of the Serbian Chemical Society, 80(9), 1113-1125.
https://doi.org/10.2298/JSC150222035I

Izrael-Živković LT, Živković L, Jokić BM, Savić AB, Karadzic IM. Adsorption of Candida rugosa lipase onto alumina: effect of surface charge. in Journal of the Serbian Chemical Society. 2015;80(9):1113-1125.
doi:10.2298/JSC150222035I .

Izrael-Živković, Lidija T., Živković, Ljiljana, Jokić, Bojan M., Savić, Andrija B., Karadzic, Ivanka M., "Adsorption of Candida rugosa lipase onto alumina: effect of surface charge" in Journal of the Serbian Chemical Society, 80, no. 9 (2015):1113-1125,
https://doi.org/10.2298/JSC150222035I . .

TY  - CONF
AU  - Omerašević, Mia
AU  - Čebela, Maria
AU  - Savić, Andrija B.
AU  -  Nenadović, Snežana
AU  -  Mentus, Slavko V.
AU  - Radosavljević-Mihajlović, Ana
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11529
AB  - Cesium aluminosilicate phases are of great interest as possible hosts for 137Cs immobilization in radioactive waste management. Cs+ exchanged forms of two synthetic zeolites (4A and 3A) were prepared by standard procedure, and content of exchanged ions was determined by ion chromatography. Obtained samples were investigated by differential thermal gravimetry TG/(DTG) and SEM/EDS analysis. All samples were annealed in the range of 600–1500 °C. High temperature phase transformations of Cs+ exchanged zeolites (LTA) were investigated. Based on data obtained by XRD analysis of the samples, it was concluded that above 1000 °C Cs-LTA (4A and 3A) frameworks recrystallized in a pollucite phase.
PB  - University of Novi Sad : Faculty of Technology
C3  - 10th Conference for Young Scientists in Ceramics (The Tenth Students' Meeting - SM-2013, and The Third ESR Workshop, COST MP0904) : programme and the book of abstracts; November 6-9, Novi Sad
T1  - Thermal Induced Phase Transformation of Cs-Exchanged LTA framework zeolite
SP  - 97
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11529
ER  - 

@conference{
author = "Omerašević, Mia and Čebela, Maria and Savić, Andrija B. and  Nenadović, Snežana and  Mentus, Slavko V. and Radosavljević-Mihajlović, Ana",
year = "2013",
abstract = "Cesium aluminosilicate phases are of great interest as possible hosts for 137Cs immobilization in radioactive waste management. Cs+ exchanged forms of two synthetic zeolites (4A and 3A) were prepared by standard procedure, and content of exchanged ions was determined by ion chromatography. Obtained samples were investigated by differential thermal gravimetry TG/(DTG) and SEM/EDS analysis. All samples were annealed in the range of 600–1500 °C. High temperature phase transformations of Cs+ exchanged zeolites (LTA) were investigated. Based on data obtained by XRD analysis of the samples, it was concluded that above 1000 °C Cs-LTA (4A and 3A) frameworks recrystallized in a pollucite phase.",
publisher = "University of Novi Sad : Faculty of Technology",
journal = "10th Conference for Young Scientists in Ceramics (The Tenth Students' Meeting - SM-2013, and The Third ESR Workshop, COST MP0904) : programme and the book of abstracts; November 6-9, Novi Sad",
title = "Thermal Induced Phase Transformation of Cs-Exchanged LTA framework zeolite",
pages = "97",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11529"
}

Omerašević, M., Čebela, M., Savić, A. B.,  Nenadović, S.,  Mentus, S. V.,& Radosavljević-Mihajlović, A.. (2013). Thermal Induced Phase Transformation of Cs-Exchanged LTA framework zeolite. in 10th Conference for Young Scientists in Ceramics (The Tenth Students' Meeting - SM-2013, and The Third ESR Workshop, COST MP0904) : programme and the book of abstracts; November 6-9, Novi Sad
University of Novi Sad : Faculty of Technology., 97.
https://hdl.handle.net/21.15107/rcub_vinar_11529

Omerašević M, Čebela M, Savić AB,  Nenadović S,  Mentus SV, Radosavljević-Mihajlović A. Thermal Induced Phase Transformation of Cs-Exchanged LTA framework zeolite. in 10th Conference for Young Scientists in Ceramics (The Tenth Students' Meeting - SM-2013, and The Third ESR Workshop, COST MP0904) : programme and the book of abstracts; November 6-9, Novi Sad. 2013;:97.
https://hdl.handle.net/21.15107/rcub_vinar_11529 .

Omerašević, Mia, Čebela, Maria, Savić, Andrija B.,  Nenadović, Snežana,  Mentus, Slavko V., Radosavljević-Mihajlović, Ana, "Thermal Induced Phase Transformation of Cs-Exchanged LTA framework zeolite" in 10th Conference for Young Scientists in Ceramics (The Tenth Students' Meeting - SM-2013, and The Third ESR Workshop, COST MP0904) : programme and the book of abstracts; November 6-9, Novi Sad (2013):97,
https://hdl.handle.net/21.15107/rcub_vinar_11529 .

TY  - CONF
AU  - Omerašević, Mia
AU  - Čebela, Maria
AU  - Savić, Andrija B.
AU  - Maksimović, Vesna
AU  - Vuković, Nikola
AU  - Mentus, Slavko
AU  - Radosavljević-Mihajlović, Ana
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11532
AB  - 137Cesium is considered as one of the most hazardous radiotoxic elements for the environment. The aim of this study is to find out the best method to remove radio-active cesium from nuclear waste streams and safely store in non-leaching solids. Cs + exchanged forms of two synthetic zeolites (4A and 5A) were prepared by standard procedure and investigated by SEM/EDS analysis. Thermal-transformations of Cs + exchanged zeolites (LTA) have been studied by means of differential thermal analysis (DTA), thermo-gravimetric analyis (TGA) and x-ray powder diffraction. Based on obtained data, it was concluded that above 1000 0C Cs-LTA (4A and 5A) frameworks recrystallized in a stabile pollucite phase.
C3  - 12th Young Researchers' Conference Materials Sciences and Engineering, December 11-13, 2013, Belgrade, Serbia
T1  - Comparation of mechanical behaviour of SiC sintered specimen to analysis of surface defects
SP  - 9
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11532
ER  - 

@conference{
author = "Omerašević, Mia and Čebela, Maria and Savić, Andrija B. and Maksimović, Vesna and Vuković, Nikola and Mentus, Slavko and Radosavljević-Mihajlović, Ana",
year = "2013",
abstract = "137Cesium is considered as one of the most hazardous radiotoxic elements for the environment. The aim of this study is to find out the best method to remove radio-active cesium from nuclear waste streams and safely store in non-leaching solids. Cs + exchanged forms of two synthetic zeolites (4A and 5A) were prepared by standard procedure and investigated by SEM/EDS analysis. Thermal-transformations of Cs + exchanged zeolites (LTA) have been studied by means of differential thermal analysis (DTA), thermo-gravimetric analyis (TGA) and x-ray powder diffraction. Based on obtained data, it was concluded that above 1000 0C Cs-LTA (4A and 5A) frameworks recrystallized in a stabile pollucite phase.",
journal = "12th Young Researchers' Conference Materials Sciences and Engineering, December 11-13, 2013, Belgrade, Serbia",
title = "Comparation of mechanical behaviour of SiC sintered specimen to analysis of surface defects",
pages = "9",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11532"
}

Omerašević, M., Čebela, M., Savić, A. B., Maksimović, V., Vuković, N., Mentus, S.,& Radosavljević-Mihajlović, A.. (2013). Comparation of mechanical behaviour of SiC sintered specimen to analysis of surface defects. in 12th Young Researchers' Conference Materials Sciences and Engineering, December 11-13, 2013, Belgrade, Serbia, 9.
https://hdl.handle.net/21.15107/rcub_vinar_11532

Omerašević M, Čebela M, Savić AB, Maksimović V, Vuković N, Mentus S, Radosavljević-Mihajlović A. Comparation of mechanical behaviour of SiC sintered specimen to analysis of surface defects. in 12th Young Researchers' Conference Materials Sciences and Engineering, December 11-13, 2013, Belgrade, Serbia. 2013;:9.
https://hdl.handle.net/21.15107/rcub_vinar_11532 .

Omerašević, Mia, Čebela, Maria, Savić, Andrija B., Maksimović, Vesna, Vuković, Nikola, Mentus, Slavko, Radosavljević-Mihajlović, Ana, "Comparation of mechanical behaviour of SiC sintered specimen to analysis of surface defects" in 12th Young Researchers' Conference Materials Sciences and Engineering, December 11-13, 2013, Belgrade, Serbia (2013):9,
https://hdl.handle.net/21.15107/rcub_vinar_11532 .