TY  - JOUR
AU  - Mirković, Miljana
AU  - Bracanović, Ivan
AU  - Krstić, Aleksandar
AU  - Đukić, Dunja
AU  - Dodevski, Vladimir
AU  - Kalijadis, Ana
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12991
AB  - Octacalcium phosphate (OCP) is a material from the calcium phos-phate group with a crystal structure similar to hydroxyapatite. The removal process of lead and cadmium in aqueous solution using octacalcium phosphate material was investigated. OCP material was synthesized by the solution pre-cipitation method. The structural and phase properties of OCP before and after the removal process were determined by the X-ray diffraction (XRD) method. Microstructural and semi-quantitative analysis of the material was investigated by  scanning  electron  microscopy  and  energy  dispersive  X-ray  spectroscopy (SEM-EDS).  Characteristic  bands  and  functional  group  determination  were revealed  using  the  Fourier-transform  infrared  spectroscopy  with  attenuated total  reflection  (FTIR-ATR).  As  target  pollutants,  Cd(II)  and  Pb(II)  were chosen in adsorption experiments. Results show that OCP in the first 10 min has a very fast removal rate for Pb(II); the equilibrium state was reached after 10 min with more than 98 % adsorption efficiency. Results for Cd(II), results showed  the  same  removal  rate  but  somewhat    lower  adsorption  efficiency, amounted to approximately 63 %.
T2  - Journal of the Serbian Chemical Society
T1  - Removal of lead and cadmium from aqueous solution using octacalcium phosphate as an adsorbent
T1  - Uklanjanje olova i kadmijuma iz vodenog rastvora koristeći okrakalcijum-fosfat kao adsorbent
VL  - 89
IS  - 2
SP  - 231
EP  - 244
DO  - 10.2298/JSC230915104M
ER  - 

@article{
author = "Mirković, Miljana and Bracanović, Ivan and Krstić, Aleksandar and Đukić, Dunja and Dodevski, Vladimir and Kalijadis, Ana",
year = "2024",
abstract = "Octacalcium phosphate (OCP) is a material from the calcium phos-phate group with a crystal structure similar to hydroxyapatite. The removal process of lead and cadmium in aqueous solution using octacalcium phosphate material was investigated. OCP material was synthesized by the solution pre-cipitation method. The structural and phase properties of OCP before and after the removal process were determined by the X-ray diffraction (XRD) method. Microstructural and semi-quantitative analysis of the material was investigated by  scanning  electron  microscopy  and  energy  dispersive  X-ray  spectroscopy (SEM-EDS).  Characteristic  bands  and  functional  group  determination  were revealed  using  the  Fourier-transform  infrared  spectroscopy  with  attenuated total  reflection  (FTIR-ATR).  As  target  pollutants,  Cd(II)  and  Pb(II)  were chosen in adsorption experiments. Results show that OCP in the first 10 min has a very fast removal rate for Pb(II); the equilibrium state was reached after 10 min with more than 98 % adsorption efficiency. Results for Cd(II), results showed  the  same  removal  rate  but  somewhat    lower  adsorption  efficiency, amounted to approximately 63 %.",
journal = "Journal of the Serbian Chemical Society",
title = "Removal of lead and cadmium from aqueous solution using octacalcium phosphate as an adsorbent, Uklanjanje olova i kadmijuma iz vodenog rastvora koristeći okrakalcijum-fosfat kao adsorbent",
volume = "89",
number = "2",
pages = "231-244",
doi = "10.2298/JSC230915104M"
}

Mirković, M., Bracanović, I., Krstić, A., Đukić, D., Dodevski, V.,& Kalijadis, A.. (2024). Removal of lead and cadmium from aqueous solution using octacalcium phosphate as an adsorbent. in Journal of the Serbian Chemical Society, 89(2), 231-244.
https://doi.org/10.2298/JSC230915104M

Mirković M, Bracanović I, Krstić A, Đukić D, Dodevski V, Kalijadis A. Removal of lead and cadmium from aqueous solution using octacalcium phosphate as an adsorbent. in Journal of the Serbian Chemical Society. 2024;89(2):231-244.
doi:10.2298/JSC230915104M .

Mirković, Miljana, Bracanović, Ivan, Krstić, Aleksandar, Đukić, Dunja, Dodevski, Vladimir, Kalijadis, Ana, "Removal of lead and cadmium from aqueous solution using octacalcium phosphate as an adsorbent" in Journal of the Serbian Chemical Society, 89, no. 2 (2024):231-244,
https://doi.org/10.2298/JSC230915104M . .

TY  - JOUR
AU  - Batinić, Petar M.
AU  - Đorđević, Verica B.
AU  - Obradović, Nataša
AU  - Krstić, Aleksandar D.
AU  - Stevanović, Sanja I.
AU  - Balanč, Bojana
AU  - Marković, Smilja
AU  - Pjanović, Rada V.
AU  - Mijin, Dušan Ž.
AU  - Bugarski, Branko M.
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10851
AB  - Liposome-encapsulated folic acid is incorporated into the films made from sodium carboxymethyl cellulose (CMC) (2 mas%) and a mixture of CMC and solagum (9:1 w/w) using the film-forming cast solution method. Histidine is used to increase solubility for folic acid in liposomes (1–5 mg mL−1), and propylene glycol is used as a film plasticizer (2.6 mas%). The obtained films (50–60 µm tick) containing 3.12–20.19 mg of folic acid per gram of film are envisaged to be used as patches for transdermal delivery of folic acid. Therefore, some physical, mechanical, release and structural attributes of the films are scrutinized. Folic acid gives yellow color to the films and contributes to stronger chemical bonds which result in improved strength of the film. Liposomes prolong the release of folic acid from films to 24 h without adverse effects on mechanical properties of the films, but degrade homogeneity of the films, which can be ascribed to its agglomeration within the film matrix as revealed by atomic force microscopy. According to the release at pH 5.5, the film formulation based on a blend of CMC and solagum containing 3 mg mL−1 liposome-encapsulated folic acid is recommended. Practical Application: Folic acid is effective in reducing oxidative stress levels in the skin and neutralizing the harmful free radicals and is also essential for various metabolic reactions in the body. However, the limited solubility of folic acid linked with its poor absorption in an organism, low storage stability, short half-life upon oral consumption, specific food preferences of some people, extensive liver metabolism, and pregnancy-induced vomiting point to a large potential in transdermal usage of folic acid. This has motivated us to design new multicomponent polymer-lipid systems as an alternative solution to overcome some of these drawbacks. The results obtained for these multicomponent films pointed to their potential for prolonged release of folic acid to 24 h, which can also be useful for scientists interested in encapsulating similar poorly soluble compounds in CMC patches. The finding can be also valuable information for pharmaceutical manufacturers and scientists worldwide.
T2  - European Journal of Lipid Science and Technology
T1  - Polymer-Lipid Matrices based on Carboxymethyl Cellulose/Solagum and Liposomes for Controlled Release of Folic Acid
SP  - 2200169
DO  - 10.1002/ejlt.202200169
ER  - 

@article{
author = "Batinić, Petar M. and Đorđević, Verica B. and Obradović, Nataša and Krstić, Aleksandar D. and Stevanović, Sanja I. and Balanč, Bojana and Marković, Smilja and Pjanović, Rada V. and Mijin, Dušan Ž. and Bugarski, Branko M.",
year = "2023",
abstract = "Liposome-encapsulated folic acid is incorporated into the films made from sodium carboxymethyl cellulose (CMC) (2 mas%) and a mixture of CMC and solagum (9:1 w/w) using the film-forming cast solution method. Histidine is used to increase solubility for folic acid in liposomes (1–5 mg mL−1), and propylene glycol is used as a film plasticizer (2.6 mas%). The obtained films (50–60 µm tick) containing 3.12–20.19 mg of folic acid per gram of film are envisaged to be used as patches for transdermal delivery of folic acid. Therefore, some physical, mechanical, release and structural attributes of the films are scrutinized. Folic acid gives yellow color to the films and contributes to stronger chemical bonds which result in improved strength of the film. Liposomes prolong the release of folic acid from films to 24 h without adverse effects on mechanical properties of the films, but degrade homogeneity of the films, which can be ascribed to its agglomeration within the film matrix as revealed by atomic force microscopy. According to the release at pH 5.5, the film formulation based on a blend of CMC and solagum containing 3 mg mL−1 liposome-encapsulated folic acid is recommended. Practical Application: Folic acid is effective in reducing oxidative stress levels in the skin and neutralizing the harmful free radicals and is also essential for various metabolic reactions in the body. However, the limited solubility of folic acid linked with its poor absorption in an organism, low storage stability, short half-life upon oral consumption, specific food preferences of some people, extensive liver metabolism, and pregnancy-induced vomiting point to a large potential in transdermal usage of folic acid. This has motivated us to design new multicomponent polymer-lipid systems as an alternative solution to overcome some of these drawbacks. The results obtained for these multicomponent films pointed to their potential for prolonged release of folic acid to 24 h, which can also be useful for scientists interested in encapsulating similar poorly soluble compounds in CMC patches. The finding can be also valuable information for pharmaceutical manufacturers and scientists worldwide.",
journal = "European Journal of Lipid Science and Technology",
title = "Polymer-Lipid Matrices based on Carboxymethyl Cellulose/Solagum and Liposomes for Controlled Release of Folic Acid",
pages = "2200169",
doi = "10.1002/ejlt.202200169"
}

Batinić, P. M., Đorđević, V. B., Obradović, N., Krstić, A. D., Stevanović, S. I., Balanč, B., Marković, S., Pjanović, R. V., Mijin, D. Ž.,& Bugarski, B. M.. (2023). Polymer-Lipid Matrices based on Carboxymethyl Cellulose/Solagum and Liposomes for Controlled Release of Folic Acid. in European Journal of Lipid Science and Technology, 2200169.
https://doi.org/10.1002/ejlt.202200169

Batinić PM, Đorđević VB, Obradović N, Krstić AD, Stevanović SI, Balanč B, Marković S, Pjanović RV, Mijin DŽ, Bugarski BM. Polymer-Lipid Matrices based on Carboxymethyl Cellulose/Solagum and Liposomes for Controlled Release of Folic Acid. in European Journal of Lipid Science and Technology. 2023;:2200169.
doi:10.1002/ejlt.202200169 .

Batinić, Petar M., Đorđević, Verica B., Obradović, Nataša, Krstić, Aleksandar D., Stevanović, Sanja I., Balanč, Bojana, Marković, Smilja, Pjanović, Rada V., Mijin, Dušan Ž., Bugarski, Branko M., "Polymer-Lipid Matrices based on Carboxymethyl Cellulose/Solagum and Liposomes for Controlled Release of Folic Acid" in European Journal of Lipid Science and Technology (2023):2200169,
https://doi.org/10.1002/ejlt.202200169 . .

TY  - JOUR
AU  - Ječmenica Dučić, Marija
AU  - Krstić, Aleksandar D.
AU  - Zdolšek, Nikola
AU  - Aćimović, Danka
AU  - Savić, Branislava
AU  - Brdarić, Tanja
AU  - Vasić Anićijević, Dragana D.
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10619
AB  - Electrochemical removal of organic pollutants represents an attractive methodology in water depollution. The key challenges for researchers comprise finding simple, affordable electrode materials with satisfactory efficiency in all ranges of pollutant concentration. Electrochemical oxidation of a mixture of phenol-based dyes: bromocresol green (BCG), cresol red (CR), and thymol blue (TB), in sulphate medium, at total concentration not exceeding 15 ppm, has been performed using simply prepared, low-cost composite electrodes, based on graphene nanoplatelets (GNP) and metallic oxides (TiO2 and SnO2) loaded on stainless steel substrate: GNP@SS, SnO2/GNP@SS, and TiO2/GNP@SS. Electrodes were characterised by XRD, FTIR, and electrochemical techniques. The degradation kinetics of initial dyes was tracked with UPLC and GC-MS chromatography for 6 h, at a current density of 10 mA/cm2. GC-MS analysis of the degradation products revealed oxidised aromatic compounds as the main products, while TOC analysis confirmed a total mineralisation extent in the range of 30–35%. The proposed degradation mechanism involves the attack of OH-radical, as the main oxidising agent, to the hydroxyl oxygens of dye phenolic rings. Obtained results provide useful information for the further development of affordable laboratory-scale and industrial systems for the complete removal of phenol-based compounds.
T2  - Crystals
T1  - Low-Cost Graphene-Based Composite Electrodes for Electrochemical Oxidation of Phenolic Dyes
VL  - 13
IS  - 1
SP  - 125
DO  - 10.3390/cryst13010125
ER  - 

@article{
author = "Ječmenica Dučić, Marija and Krstić, Aleksandar D. and Zdolšek, Nikola and Aćimović, Danka and Savić, Branislava and Brdarić, Tanja and Vasić Anićijević, Dragana D.",
year = "2023",
abstract = "Electrochemical removal of organic pollutants represents an attractive methodology in water depollution. The key challenges for researchers comprise finding simple, affordable electrode materials with satisfactory efficiency in all ranges of pollutant concentration. Electrochemical oxidation of a mixture of phenol-based dyes: bromocresol green (BCG), cresol red (CR), and thymol blue (TB), in sulphate medium, at total concentration not exceeding 15 ppm, has been performed using simply prepared, low-cost composite electrodes, based on graphene nanoplatelets (GNP) and metallic oxides (TiO2 and SnO2) loaded on stainless steel substrate: GNP@SS, SnO2/GNP@SS, and TiO2/GNP@SS. Electrodes were characterised by XRD, FTIR, and electrochemical techniques. The degradation kinetics of initial dyes was tracked with UPLC and GC-MS chromatography for 6 h, at a current density of 10 mA/cm2. GC-MS analysis of the degradation products revealed oxidised aromatic compounds as the main products, while TOC analysis confirmed a total mineralisation extent in the range of 30–35%. The proposed degradation mechanism involves the attack of OH-radical, as the main oxidising agent, to the hydroxyl oxygens of dye phenolic rings. Obtained results provide useful information for the further development of affordable laboratory-scale and industrial systems for the complete removal of phenol-based compounds.",
journal = "Crystals",
title = "Low-Cost Graphene-Based Composite Electrodes for Electrochemical Oxidation of Phenolic Dyes",
volume = "13",
number = "1",
pages = "125",
doi = "10.3390/cryst13010125"
}

Ječmenica Dučić, M., Krstić, A. D., Zdolšek, N., Aćimović, D., Savić, B., Brdarić, T.,& Vasić Anićijević, D. D.. (2023). Low-Cost Graphene-Based Composite Electrodes for Electrochemical Oxidation of Phenolic Dyes. in Crystals, 13(1), 125.
https://doi.org/10.3390/cryst13010125

Ječmenica Dučić M, Krstić AD, Zdolšek N, Aćimović D, Savić B, Brdarić T, Vasić Anićijević DD. Low-Cost Graphene-Based Composite Electrodes for Electrochemical Oxidation of Phenolic Dyes. in Crystals. 2023;13(1):125.
doi:10.3390/cryst13010125 .

Ječmenica Dučić, Marija, Krstić, Aleksandar D., Zdolšek, Nikola, Aćimović, Danka, Savić, Branislava, Brdarić, Tanja, Vasić Anićijević, Dragana D., "Low-Cost Graphene-Based Composite Electrodes for Electrochemical Oxidation of Phenolic Dyes" in Crystals, 13, no. 1 (2023):125,
https://doi.org/10.3390/cryst13010125 . .

TY  - THES
AU  - Krstić, Aleksandar D.
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11755
AB  - У овој докторској дисертацији синтетисани су N-допирани и N, S кодопирани угљенични криогелови и испитана је њихова примена као адсорбената у процесу уклањања одабраних тешких метала (Zn, Cd, Hg) и фармацеутика (карбамазепин, напроксен, диазепам и диклофенак) из водених раствора. Резултати структурне и површинске анализе су показали да је: уградњом азота/азота-сумпора сачувана турбостратична структура угљеничног криогела, дошло до значајног повећања специфичне површине и промене у површинској хемији за допиране/кодопиране узорке. У циљу испитивања адсорпционих перформанси и оптимизације процеса урађена је серија адсорпционих експеримената. Резултати су показали да најбоље адсорпционе перформансе показују допирани/кодопирани узорци са највећом вредности специфичне површине и величином пора. Њихови адсорпциони капацитети, добијени применом Ленгмирове изотерме, су већи за уклањање и тешких метала и фармацеутика у односу на немодификовани узорак криогела. Експериментима десорпције и регенерације потврђена је задовољавајућа способност регенерације након четвртог циклуса адсорпције − десорпције и тешких метала и фармацеутика. Резултати теста на узорку речне воде са стандардним додатком смеше раствора тешких метала и фармацеутика су показали већу ефикасност адсорпције за одабране допиране/кодопиране узорке са највећом вредношћу специфичне површине и до 20-30% у односу на немодификовани криогел. Такође је запажено да присуство интерференци, јона метала, катјона, анјона, нема значајног утицаја на ефикасност адсорпције. Приказани резултати у овој докторској дисертацији показују да се допирањем/кодопирањем угљеничног криогела добијају материјали, који су се успешно могу применити као адсорбенти у процесима пречишћавања вода.
AB  - In this doctoral dissertation, N-doped and N, S co-doped carbon cryogels were synthesized, and their application as adsorbents in the removal process of selected heavy metals (Zn, Cd, Hg) and pharmaceuticals (carbamazepine, naproxen, diazepam and diclofenac) from aqueous solutions was studied. The results of structural and surface analysis showed that incorporation of nitrogen/nitrogen-sulfur preserved the turbostratic structure of the carbon cryogel, but a significant increase of the specific surface area as well as change of surface chemistry for the doped/co-doped samples were observed. In order to investigate the adsorption performance and process optimization, a series of adsorption experiments were performed. The best adsorption performances were obtained for the doped/co-doped samples with the highest specific surface area values and pores dimension. The adsorption capacities of these samples regarding the removal of heavy metals and pharmaceuticals, obtained using the Langmuir isotherm, were higher compared to the pristine carbon cryogel. Desorption and regeneration experiments confirmed the satisfactory regeneration ability after the fourth adsorption- desorption cycle of selected heavy metals and pharmaceuticals. Test results for a river water samples with a standard addition of a heavy metals and pharmaceuticals mixtures showed a higher adsorption efficiency up to 20-30% for the selected doped/co-doped samples with the highest values of the specific surface area compared to the pristine carbon cryogel. It was also noticed that the presence of interferences of metal ions, cations and anions has no significant effect on the adsorption efficiency. The results presented in this doctoral dissertation show that by carbon cryogel doping/co-doping it is possible to obtain carbon materials which can be successfully used as adsorbents in wastewater treatment processes.
PB  - Универзитет у Београду, Хемијски факултет
T2  - Универзитет у Београду
T1  - Примена угљеничних криогелова допираних азотом и сумпором за уклањање тешких метала и фармацеутика у процесу пречишћавања вода
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11755
ER  - 

@phdthesis{
author = "Krstić, Aleksandar D.",
year = "2023",
abstract = "У овој докторској дисертацији синтетисани су N-допирани и N, S кодопирани угљенични криогелови и испитана је њихова примена као адсорбената у процесу уклањања одабраних тешких метала (Zn, Cd, Hg) и фармацеутика (карбамазепин, напроксен, диазепам и диклофенак) из водених раствора. Резултати структурне и површинске анализе су показали да је: уградњом азота/азота-сумпора сачувана турбостратична структура угљеничног криогела, дошло до значајног повећања специфичне површине и промене у површинској хемији за допиране/кодопиране узорке. У циљу испитивања адсорпционих перформанси и оптимизације процеса урађена је серија адсорпционих експеримената. Резултати су показали да најбоље адсорпционе перформансе показују допирани/кодопирани узорци са највећом вредности специфичне површине и величином пора. Њихови адсорпциони капацитети, добијени применом Ленгмирове изотерме, су већи за уклањање и тешких метала и фармацеутика у односу на немодификовани узорак криогела. Експериментима десорпције и регенерације потврђена је задовољавајућа способност регенерације након четвртог циклуса адсорпције − десорпције и тешких метала и фармацеутика. Резултати теста на узорку речне воде са стандардним додатком смеше раствора тешких метала и фармацеутика су показали већу ефикасност адсорпције за одабране допиране/кодопиране узорке са највећом вредношћу специфичне површине и до 20-30% у односу на немодификовани криогел. Такође је запажено да присуство интерференци, јона метала, катјона, анјона, нема значајног утицаја на ефикасност адсорпције. Приказани резултати у овој докторској дисертацији показују да се допирањем/кодопирањем угљеничног криогела добијају материјали, који су се успешно могу применити као адсорбенти у процесима пречишћавања вода., In this doctoral dissertation, N-doped and N, S co-doped carbon cryogels were synthesized, and their application as adsorbents in the removal process of selected heavy metals (Zn, Cd, Hg) and pharmaceuticals (carbamazepine, naproxen, diazepam and diclofenac) from aqueous solutions was studied. The results of structural and surface analysis showed that incorporation of nitrogen/nitrogen-sulfur preserved the turbostratic structure of the carbon cryogel, but a significant increase of the specific surface area as well as change of surface chemistry for the doped/co-doped samples were observed. In order to investigate the adsorption performance and process optimization, a series of adsorption experiments were performed. The best adsorption performances were obtained for the doped/co-doped samples with the highest specific surface area values and pores dimension. The adsorption capacities of these samples regarding the removal of heavy metals and pharmaceuticals, obtained using the Langmuir isotherm, were higher compared to the pristine carbon cryogel. Desorption and regeneration experiments confirmed the satisfactory regeneration ability after the fourth adsorption- desorption cycle of selected heavy metals and pharmaceuticals. Test results for a river water samples with a standard addition of a heavy metals and pharmaceuticals mixtures showed a higher adsorption efficiency up to 20-30% for the selected doped/co-doped samples with the highest values of the specific surface area compared to the pristine carbon cryogel. It was also noticed that the presence of interferences of metal ions, cations and anions has no significant effect on the adsorption efficiency. The results presented in this doctoral dissertation show that by carbon cryogel doping/co-doping it is possible to obtain carbon materials which can be successfully used as adsorbents in wastewater treatment processes.",
publisher = "Универзитет у Београду, Хемијски факултет",
journal = "Универзитет у Београду",
title = "Примена угљеничних криогелова допираних азотом и сумпором за уклањање тешких метала и фармацеутика у процесу пречишћавања вода",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11755"
}

Krstić, A. D.. (2023). Примена угљеничних криогелова допираних азотом и сумпором за уклањање тешких метала и фармацеутика у процесу пречишћавања вода. in Универзитет у Београду
Универзитет у Београду, Хемијски факултет..
https://hdl.handle.net/21.15107/rcub_vinar_11755

Krstić AD. Примена угљеничних криогелова допираних азотом и сумпором за уклањање тешких метала и фармацеутика у процесу пречишћавања вода. in Универзитет у Београду. 2023;.
https://hdl.handle.net/21.15107/rcub_vinar_11755 .

Krstić, Aleksandar D., "Примена угљеничних криогелова допираних азотом и сумпором за уклањање тешких метала и фармацеутика у процесу пречишћавања вода" in Универзитет у Београду (2023),
https://hdl.handle.net/21.15107/rcub_vinar_11755 .

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  - JOUR
AU  - Đukić, Dunja
AU  - Krstić, Aleksandar D.
AU  - Jakovljević, Ksenija
AU  - Butulija, Svetlana
AU  - Anđelković, Ljubica
AU  - Pavlović, Vladimir B.
AU  - Mirković, Miljana M.
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10233
AB  - Newly designed mesoporous brushite-metakaolin-based geopolymer materials were examined with an idea for using this material as a potential adsorbent for Pb(II) removal from aqueous solutions. As a starting component for geopolymer synthesis, a natural raw kaolinite clay with theaddition of 2 wt.%, 4 wt.%, 6 wt.%, 8 wt.%, and 10 wt.% of pure brushite was used. Phase, structural,morphological, and adsorption properties of newly synthesized mesoporous brushite-metakaolin geopolymer materials were examined in detail by the means of XRPD, FTIR, SEM-EDS, BET/BJH, and ICP-OES methods. The ICP-OES results showed that the synthesized material samples with 2 wt.%, 4 wt.%, and 6 wt.% of brushite possess significant adsorption properties and the mechanisms of the adsorption process can be attributed to chemisorption. The most notable result is that brushite-metakaolin-geopolymer with 2 wt.% of brushite have the best efficiency removal, more than 85% of Pb(II).
T2  - Sustainability
T1  - Brushite-Metakaolin Composite Geopolymer Material as an Effective Adsorbent for Lead Removal from Aqueous Solutions
VL  - 14
IS  - 7
SP  - 4003
DO  - 10.3390/su14074003
ER  - 

@article{
author = "Đukić, Dunja and Krstić, Aleksandar D. and Jakovljević, Ksenija and Butulija, Svetlana and Anđelković, Ljubica and Pavlović, Vladimir B. and Mirković, Miljana M.",
year = "2022",
abstract = "Newly designed mesoporous brushite-metakaolin-based geopolymer materials were examined with an idea for using this material as a potential adsorbent for Pb(II) removal from aqueous solutions. As a starting component for geopolymer synthesis, a natural raw kaolinite clay with theaddition of 2 wt.%, 4 wt.%, 6 wt.%, 8 wt.%, and 10 wt.% of pure brushite was used. Phase, structural,morphological, and adsorption properties of newly synthesized mesoporous brushite-metakaolin geopolymer materials were examined in detail by the means of XRPD, FTIR, SEM-EDS, BET/BJH, and ICP-OES methods. The ICP-OES results showed that the synthesized material samples with 2 wt.%, 4 wt.%, and 6 wt.% of brushite possess significant adsorption properties and the mechanisms of the adsorption process can be attributed to chemisorption. The most notable result is that brushite-metakaolin-geopolymer with 2 wt.% of brushite have the best efficiency removal, more than 85% of Pb(II).",
journal = "Sustainability",
title = "Brushite-Metakaolin Composite Geopolymer Material as an Effective Adsorbent for Lead Removal from Aqueous Solutions",
volume = "14",
number = "7",
pages = "4003",
doi = "10.3390/su14074003"
}

Đukić, D., Krstić, A. D., Jakovljević, K., Butulija, S., Anđelković, L., Pavlović, V. B.,& Mirković, M. M.. (2022). Brushite-Metakaolin Composite Geopolymer Material as an Effective Adsorbent for Lead Removal from Aqueous Solutions. in Sustainability, 14(7), 4003.
https://doi.org/10.3390/su14074003

Đukić D, Krstić AD, Jakovljević K, Butulija S, Anđelković L, Pavlović VB, Mirković MM. Brushite-Metakaolin Composite Geopolymer Material as an Effective Adsorbent for Lead Removal from Aqueous Solutions. in Sustainability. 2022;14(7):4003.
doi:10.3390/su14074003 .

Đukić, Dunja, Krstić, Aleksandar D., Jakovljević, Ksenija, Butulija, Svetlana, Anđelković, Ljubica, Pavlović, Vladimir B., Mirković, Miljana M., "Brushite-Metakaolin Composite Geopolymer Material as an Effective Adsorbent for Lead Removal from Aqueous Solutions" in Sustainability, 14, no. 7 (2022):4003,
https://doi.org/10.3390/su14074003 . .

TY  - JOUR
AU  - Kojić, Marija
AU  - Mihajlović, Marija
AU  - Marinović-Cincović, Milena
AU  - Petrović, Jelena
AU  - Katnić, Đurica
AU  - Krstić, Aleksandar
AU  - Butulija, Svetlana
AU  - Onjia, Antonije E.
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10272
AB  - A calcium-pyro-hydrochar (Ca-PHC) can be distinguished as a novel sorbent of Pb2+ and Cd2+ from an aqueous solution. It was obtained using hydrothermal treatment of the spent mushroom substrate (SMS), followed by a CaCl2·5H2O activation and pyrolysis. The characterisation of chars before and after modifications was done by scanning electron microscope (SEM), Brunauer–Emmett–Teller (BET) and Fourier transform infrared (FTIR). Batch experiments were performed to examine Ca-PHC’s sorption properties and binding mechanisms to selected metal ions. The maximum sorption capacities of Ca-PHC for Pb2+ and Cd2+ were 297 mg g−1, and 131 mg g−1, respectively. The obtained results demonstrated that the sorption of Pb2+ and Cd2+ by Ca-PHC follows a pseudo-second kinetic model and Freundlich isotherm. The binding of the selected metals onto Ca-PHC was enabled by the ion-exchange mechanism, surface complexation, mineral precipitation and cation–π interaction. Thermodynamic parameters indicate that metal ions binding by Ca-PHC are spontaneous and endothermic. Due to the high adsorption capacities, the obtained Ca-PHC has good potential for application in industrial wastewater treatment. In addition, the demonstrated use of SMS highlights another possibility of applying this specific biomass relevant to sustainable and economical waste management in the growing mushroom industry.
T2  - Waste Management and Research
T1  - Calcium-pyro-hydrochar derived from the spent mushroom substrate as a functional sorbent of Pb2+ and Cd2+ from aqueous solutions
DO  - 10.1177/0734242X221093951
ER  - 

@article{
author = "Kojić, Marija and Mihajlović, Marija and Marinović-Cincović, Milena and Petrović, Jelena and Katnić, Đurica and Krstić, Aleksandar and Butulija, Svetlana and Onjia, Antonije E.",
year = "2022",
abstract = "A calcium-pyro-hydrochar (Ca-PHC) can be distinguished as a novel sorbent of Pb2+ and Cd2+ from an aqueous solution. It was obtained using hydrothermal treatment of the spent mushroom substrate (SMS), followed by a CaCl2·5H2O activation and pyrolysis. The characterisation of chars before and after modifications was done by scanning electron microscope (SEM), Brunauer–Emmett–Teller (BET) and Fourier transform infrared (FTIR). Batch experiments were performed to examine Ca-PHC’s sorption properties and binding mechanisms to selected metal ions. The maximum sorption capacities of Ca-PHC for Pb2+ and Cd2+ were 297 mg g−1, and 131 mg g−1, respectively. The obtained results demonstrated that the sorption of Pb2+ and Cd2+ by Ca-PHC follows a pseudo-second kinetic model and Freundlich isotherm. The binding of the selected metals onto Ca-PHC was enabled by the ion-exchange mechanism, surface complexation, mineral precipitation and cation–π interaction. Thermodynamic parameters indicate that metal ions binding by Ca-PHC are spontaneous and endothermic. Due to the high adsorption capacities, the obtained Ca-PHC has good potential for application in industrial wastewater treatment. In addition, the demonstrated use of SMS highlights another possibility of applying this specific biomass relevant to sustainable and economical waste management in the growing mushroom industry.",
journal = "Waste Management and Research",
title = "Calcium-pyro-hydrochar derived from the spent mushroom substrate as a functional sorbent of Pb2+ and Cd2+ from aqueous solutions",
doi = "10.1177/0734242X221093951"
}

Kojić, M., Mihajlović, M., Marinović-Cincović, M., Petrović, J., Katnić, Đ., Krstić, A., Butulija, S.,& Onjia, A. E.. (2022). Calcium-pyro-hydrochar derived from the spent mushroom substrate as a functional sorbent of Pb2+ and Cd2+ from aqueous solutions. in Waste Management and Research.
https://doi.org/10.1177/0734242X221093951

Kojić M, Mihajlović M, Marinović-Cincović M, Petrović J, Katnić Đ, Krstić A, Butulija S, Onjia AE. Calcium-pyro-hydrochar derived from the spent mushroom substrate as a functional sorbent of Pb2+ and Cd2+ from aqueous solutions. in Waste Management and Research. 2022;.
doi:10.1177/0734242X221093951 .

Kojić, Marija, Mihajlović, Marija, Marinović-Cincović, Milena, Petrović, Jelena, Katnić, Đurica, Krstić, Aleksandar, Butulija, Svetlana, Onjia, Antonije E., "Calcium-pyro-hydrochar derived from the spent mushroom substrate as a functional sorbent of Pb2+ and Cd2+ from aqueous solutions" in Waste Management and Research (2022),
https://doi.org/10.1177/0734242X221093951 . .

TY  - CONF
AU  - Katnić, Đurica
AU  - Vujčić, Ivica
AU  - Kojić, Marija
AU  - Krstić, Aleksandar D.
AU  - Marinović-Cincović, Milena
AU  - Porobić, Slavica
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11110
AB  - Fig (Ficus carica L.) is a fruit of the Moraceae family, which is mostly grown in subtropical regions, but also grows in Serbia. Fig trees are usually grown in warm and dry climates. According to the FAO world production of figs is stable, with a decade-long average of about 1.1 million tons a year. Fig pomace are formed after fermentation of this fruit which is used for the preparation of brandy. The brandy industry generates huge amounts of pomace as industrial waste, so pyrolysis as thermochemical technologies was used for organic agro-industrial waste treatment. Biochar produced by pyrolysis of fig pomace at 500 °C were characterized and investigated as adsorbents for the removal of Pb2+ ions from aqueous solution. Fig pomace before and after pyrolysis was characterized using proximate, inorganic and elemental analysis, Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), X-ray diffraction (XRD), thermogravimetric analysis (TGA) and differential thermal analysis (DTA). Biochar has a carbon matrix with a high degree of porosity and large surface area, suggesting that it can be used as a surface adsorbent and thus have a significant role in controlling environmental contaminants. The surface modification by gamma irradiation was done to enhance the adsorption capacity of biochar. The Pb2+ ions contents in aqueous solution were analyzed using ICP-OES. The adsorption capacity was estimated using the Freundlich and Langmuir model. The results of this work suggest that pyrolysis and irradiation of biomass is a promising way to produce efficient heavy metal sorbents for waste-water treatment.
PB  - RAD Centre, Niš, Serbia
C3  - RAD 2022 : 10th Jubilee International Conference on Radiation in Various Fields of Research : book of abstracts; June 13-17; Herceg Novi, Montenegro
T1  - Fig pomace biochar modified using gamma irradiation
for Pb2+ ions adsorption from aqueous solution
SP  - 43
DO  - 10.21175/rad.spr.abstr.book.2022.11.3
ER  - 

@conference{
author = "Katnić, Đurica and Vujčić, Ivica and Kojić, Marija and Krstić, Aleksandar D. and Marinović-Cincović, Milena and Porobić, Slavica",
year = "2022",
abstract = "Fig (Ficus carica L.) is a fruit of the Moraceae family, which is mostly grown in subtropical regions, but also grows in Serbia. Fig trees are usually grown in warm and dry climates. According to the FAO world production of figs is stable, with a decade-long average of about 1.1 million tons a year. Fig pomace are formed after fermentation of this fruit which is used for the preparation of brandy. The brandy industry generates huge amounts of pomace as industrial waste, so pyrolysis as thermochemical technologies was used for organic agro-industrial waste treatment. Biochar produced by pyrolysis of fig pomace at 500 °C were characterized and investigated as adsorbents for the removal of Pb2+ ions from aqueous solution. Fig pomace before and after pyrolysis was characterized using proximate, inorganic and elemental analysis, Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), X-ray diffraction (XRD), thermogravimetric analysis (TGA) and differential thermal analysis (DTA). Biochar has a carbon matrix with a high degree of porosity and large surface area, suggesting that it can be used as a surface adsorbent and thus have a significant role in controlling environmental contaminants. The surface modification by gamma irradiation was done to enhance the adsorption capacity of biochar. The Pb2+ ions contents in aqueous solution were analyzed using ICP-OES. The adsorption capacity was estimated using the Freundlich and Langmuir model. The results of this work suggest that pyrolysis and irradiation of biomass is a promising way to produce efficient heavy metal sorbents for waste-water treatment.",
publisher = "RAD Centre, Niš, Serbia",
journal = "RAD 2022 : 10th Jubilee International Conference on Radiation in Various Fields of Research : book of abstracts; June 13-17; Herceg Novi, Montenegro",
title = "Fig pomace biochar modified using gamma irradiation
for Pb2+ ions adsorption from aqueous solution",
pages = "43",
doi = "10.21175/rad.spr.abstr.book.2022.11.3"
}

Katnić, Đ., Vujčić, I., Kojić, M., Krstić, A. D., Marinović-Cincović, M.,& Porobić, S.. (2022). Fig pomace biochar modified using gamma irradiation
for Pb2+ ions adsorption from aqueous solution. in RAD 2022 : 10th Jubilee International Conference on Radiation in Various Fields of Research : book of abstracts; June 13-17; Herceg Novi, Montenegro
RAD Centre, Niš, Serbia., 43.
https://doi.org/10.21175/rad.spr.abstr.book.2022.11.3

Katnić Đ, Vujčić I, Kojić M, Krstić AD, Marinović-Cincović M, Porobić S. Fig pomace biochar modified using gamma irradiation
for Pb2+ ions adsorption from aqueous solution. in RAD 2022 : 10th Jubilee International Conference on Radiation in Various Fields of Research : book of abstracts; June 13-17; Herceg Novi, Montenegro. 2022;:43.
doi:10.21175/rad.spr.abstr.book.2022.11.3 .

Katnić, Đurica, Vujčić, Ivica, Kojić, Marija, Krstić, Aleksandar D., Marinović-Cincović, Milena, Porobić, Slavica, "Fig pomace biochar modified using gamma irradiation
for Pb2+ ions adsorption from aqueous solution" in RAD 2022 : 10th Jubilee International Conference on Radiation in Various Fields of Research : book of abstracts; June 13-17; Herceg Novi, Montenegro (2022):43,
https://doi.org/10.21175/rad.spr.abstr.book.2022.11.3 . .

TY  - JOUR
AU  - Marinković, Jelena
AU  - Marković, Tatjana
AU  - Nikolić, Biljana
AU  - Ćirić, Ana
AU  - Mitić-Ćulafić, Dragana
AU  - Dukanović, Stefana
AU  - Krstić, Aleksandar D.
AU  - Pavlica, Dušan
AU  - Vlajić, Tamara
AU  - Marković, Dejan
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10224
AB  - The aim of the study was to investigate the potency of Cinnamomum camphora cineoliferum and Melaleuca ericifolia essential oils (EOs) against facultative and obligate anaerobes isolated from teeth’ infected root canals. Biocompatibility of the EOs was also in the study focus. Chemical composition of the EOs was determined by GC/MS analysis. Their antibacterial potential and cytotoxicity were evaluated by microdilution and MTT assays, respectively. Statistical analysis was performed by Student’s t-test and one way ANOVA. Two the most abundant constituents of C. camphora cineoliferum EO were 1,8-cineole and sabinene, while in M. ericifolia EO the dominant were linalool and 1,8-cineole. MICs achieved against all tested strains were in the ranges 0.95±0.50 - 22.50±0.00 mg/mL and 0.65±0.00 - 23.35±7.80 mg/mL for the C. camphora cioneoliferum and M. ericifolia EOs, respectively. Statistical analysis showed that response to both oils has not differed between facultative and obligate anaerobes. Sensitivity pattern of the tested strains was different for the EOs and the positive control triple antibiotic paste (TAP): while E. faecalis and certain strains of S. salivarius were among the most sensitive to the oils, they were the least susceptible to the conventional antimicrobial TAP. Although the observed cytotoxicity of the EOs after 30 min of cell exposition was high (50.78-66.35% and up to 70% for C. camphora cioneoliferum and M. ericifolia EOs, respectively) it was lower than that of positive control (1.5% NaOCl, p<0.05). To conclude, both EOs showed promising antibacterial potential and achieved at least the same or even better biocompatibility than the conventional intracanal antimicrobials. Obtained results strongly encourage future research with an aim to formulate C. camphora cioneoliferum and M. ericifolia EO- based irrigants and medicaments, that could be used in endodontic practice.
T2  - Journal of Essential Oil-Bearing Plants
T1  - Biocompatibility and Antibacterial Potential of the Cinnamomum camphora cineoliferum (L.) J. Presl. and Melaleuca ericifolia Sm. Essential Oils Against Facultative and Obligate Endodontic Anaerobes
VL  - 25
IS  - 1
SP  - 111
EP  - 125
DO  - 10.1080/0972060X.2022.2040386
ER  - 

@article{
author = "Marinković, Jelena and Marković, Tatjana and Nikolić, Biljana and Ćirić, Ana and Mitić-Ćulafić, Dragana and Dukanović, Stefana and Krstić, Aleksandar D. and Pavlica, Dušan and Vlajić, Tamara and Marković, Dejan",
year = "2022",
abstract = "The aim of the study was to investigate the potency of Cinnamomum camphora cineoliferum and Melaleuca ericifolia essential oils (EOs) against facultative and obligate anaerobes isolated from teeth’ infected root canals. Biocompatibility of the EOs was also in the study focus. Chemical composition of the EOs was determined by GC/MS analysis. Their antibacterial potential and cytotoxicity were evaluated by microdilution and MTT assays, respectively. Statistical analysis was performed by Student’s t-test and one way ANOVA. Two the most abundant constituents of C. camphora cineoliferum EO were 1,8-cineole and sabinene, while in M. ericifolia EO the dominant were linalool and 1,8-cineole. MICs achieved against all tested strains were in the ranges 0.95±0.50 - 22.50±0.00 mg/mL and 0.65±0.00 - 23.35±7.80 mg/mL for the C. camphora cioneoliferum and M. ericifolia EOs, respectively. Statistical analysis showed that response to both oils has not differed between facultative and obligate anaerobes. Sensitivity pattern of the tested strains was different for the EOs and the positive control triple antibiotic paste (TAP): while E. faecalis and certain strains of S. salivarius were among the most sensitive to the oils, they were the least susceptible to the conventional antimicrobial TAP. Although the observed cytotoxicity of the EOs after 30 min of cell exposition was high (50.78-66.35% and up to 70% for C. camphora cioneoliferum and M. ericifolia EOs, respectively) it was lower than that of positive control (1.5% NaOCl, p<0.05). To conclude, both EOs showed promising antibacterial potential and achieved at least the same or even better biocompatibility than the conventional intracanal antimicrobials. Obtained results strongly encourage future research with an aim to formulate C. camphora cioneoliferum and M. ericifolia EO- based irrigants and medicaments, that could be used in endodontic practice.",
journal = "Journal of Essential Oil-Bearing Plants",
title = "Biocompatibility and Antibacterial Potential of the Cinnamomum camphora cineoliferum (L.) J. Presl. and Melaleuca ericifolia Sm. Essential Oils Against Facultative and Obligate Endodontic Anaerobes",
volume = "25",
number = "1",
pages = "111-125",
doi = "10.1080/0972060X.2022.2040386"
}

Marinković, J., Marković, T., Nikolić, B., Ćirić, A., Mitić-Ćulafić, D., Dukanović, S., Krstić, A. D., Pavlica, D., Vlajić, T.,& Marković, D.. (2022). Biocompatibility and Antibacterial Potential of the Cinnamomum camphora cineoliferum (L.) J. Presl. and Melaleuca ericifolia Sm. Essential Oils Against Facultative and Obligate Endodontic Anaerobes. in Journal of Essential Oil-Bearing Plants, 25(1), 111-125.
https://doi.org/10.1080/0972060X.2022.2040386

Marinković J, Marković T, Nikolić B, Ćirić A, Mitić-Ćulafić D, Dukanović S, Krstić AD, Pavlica D, Vlajić T, Marković D. Biocompatibility and Antibacterial Potential of the Cinnamomum camphora cineoliferum (L.) J. Presl. and Melaleuca ericifolia Sm. Essential Oils Against Facultative and Obligate Endodontic Anaerobes. in Journal of Essential Oil-Bearing Plants. 2022;25(1):111-125.
doi:10.1080/0972060X.2022.2040386 .

Marinković, Jelena, Marković, Tatjana, Nikolić, Biljana, Ćirić, Ana, Mitić-Ćulafić, Dragana, Dukanović, Stefana, Krstić, Aleksandar D., Pavlica, Dušan, Vlajić, Tamara, Marković, Dejan, "Biocompatibility and Antibacterial Potential of the Cinnamomum camphora cineoliferum (L.) J. Presl. and Melaleuca ericifolia Sm. Essential Oils Against Facultative and Obligate Endodontic Anaerobes" in Journal of Essential Oil-Bearing Plants, 25, no. 1 (2022):111-125,
https://doi.org/10.1080/0972060X.2022.2040386 . .

TY  - JOUR
AU  - Pijović, Milena
AU  - Manić, Nebojša G.
AU  - Vasić Anićijević, Dragana D.
AU  - Krstić, Aleksandar
AU  - Mitrić, Miodrag
AU  - Matić, Tamara
AU  - Janković, Bojan Ž.
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10077
AB  - Pyrolytic tire (PT) chars were first produced from waste car tires (WCT) through carbonization process at 800 °C, for different retention times. Then, best PT-char sample by its physicochemical properties (WCT 800(1 h)) was further tested for its ability to adsorb Rhodamine B (RhB) dye from aqueous solutions. Structural characterization of synthesized material showed existence of graphene-based material, with average pore diameter of 22.8 nm and specific surface area of 55.8 m2·g−1. Obtained carbon material meets specifications of commercial carbon black (CB). The yield of 33.6% of CB recovered has been achieved. Under the optimal conditions, 99.57% of RhB was removed. Adsorption of RhB obeys pseudo second-order model and Langmuir isotherm model. DFT (the density functional theory) was revealed that effective bonding of RhB onto WCT 800 originates from π-electron interactions with aromatic moieties and chemical (or at least the electrostatic) interactions, between positive nitrogen and electron-rich surface groups.
T2  - Diamond and Related Materials
T1  - Simple and effective one-step production of high-quality mesoporous pyrolytic char from waste tires: Rhodamine B adsorption kinetics and density functional theory (DFT) study
VL  - 121
SP  - 108768
DO  - 10.1016/j.diamond.2021.108768
ER  - 

@article{
author = "Pijović, Milena and Manić, Nebojša G. and Vasić Anićijević, Dragana D. and Krstić, Aleksandar and Mitrić, Miodrag and Matić, Tamara and Janković, Bojan Ž.",
year = "2022",
abstract = "Pyrolytic tire (PT) chars were first produced from waste car tires (WCT) through carbonization process at 800 °C, for different retention times. Then, best PT-char sample by its physicochemical properties (WCT 800(1 h)) was further tested for its ability to adsorb Rhodamine B (RhB) dye from aqueous solutions. Structural characterization of synthesized material showed existence of graphene-based material, with average pore diameter of 22.8 nm and specific surface area of 55.8 m2·g−1. Obtained carbon material meets specifications of commercial carbon black (CB). The yield of 33.6% of CB recovered has been achieved. Under the optimal conditions, 99.57% of RhB was removed. Adsorption of RhB obeys pseudo second-order model and Langmuir isotherm model. DFT (the density functional theory) was revealed that effective bonding of RhB onto WCT 800 originates from π-electron interactions with aromatic moieties and chemical (or at least the electrostatic) interactions, between positive nitrogen and electron-rich surface groups.",
journal = "Diamond and Related Materials",
title = "Simple and effective one-step production of high-quality mesoporous pyrolytic char from waste tires: Rhodamine B adsorption kinetics and density functional theory (DFT) study",
volume = "121",
pages = "108768",
doi = "10.1016/j.diamond.2021.108768"
}

Pijović, M., Manić, N. G., Vasić Anićijević, D. D., Krstić, A., Mitrić, M., Matić, T.,& Janković, B. Ž.. (2022). Simple and effective one-step production of high-quality mesoporous pyrolytic char from waste tires: Rhodamine B adsorption kinetics and density functional theory (DFT) study. in Diamond and Related Materials, 121, 108768.
https://doi.org/10.1016/j.diamond.2021.108768

Pijović M, Manić NG, Vasić Anićijević DD, Krstić A, Mitrić M, Matić T, Janković BŽ. Simple and effective one-step production of high-quality mesoporous pyrolytic char from waste tires: Rhodamine B adsorption kinetics and density functional theory (DFT) study. in Diamond and Related Materials. 2022;121:108768.
doi:10.1016/j.diamond.2021.108768 .

Pijović, Milena, Manić, Nebojša G., Vasić Anićijević, Dragana D., Krstić, Aleksandar, Mitrić, Miodrag, Matić, Tamara, Janković, Bojan Ž., "Simple and effective one-step production of high-quality mesoporous pyrolytic char from waste tires: Rhodamine B adsorption kinetics and density functional theory (DFT) study" in Diamond and Related Materials, 121 (2022):108768,
https://doi.org/10.1016/j.diamond.2021.108768 . .

TY  - JOUR
AU  - Krstić, Aleksandar D.
AU  - Lolić, Aleksandar
AU  - Mirković, Miljana M.
AU  - Kovač, Janez
AU  - Minović-Arsić, Tamara
AU  - Babić, Biljana
AU  - Kalijadis, Ana
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10552
AB  - In this study carbon cryogel, cryogel doped with nitrogen, and both nitrogen and sulfur co-doped carbon cryogels (nominal concentration of nitrogen was in the range 2–10 wt%) were synthesized and used as an adsorbent for the removal of carbamazepine, naproxen, diazepam and diclofenac from water. A batch adsorption kinetics study was performed by determination of contact time influence, the effect of pH, and adsorption isotherms. Structural and morphological analysis showed that there are no changes in turbostratic carbon structure induced by doping/co-doping, but noticeable morphology changes were observed. The presence of both nitrogen and nitrogen/sulfur were confirmed and results showed low content on the surface, especially for sulfur. Obtained high values of the specific surface area for co-doped samples (up to 1530 m2/g) can be caused by sulfur atoms burning or leaving the material during carbonization. The results of the adsorption kinetics study showed that the adsorption of all pharmaceuticals on all tested samples followed the pseudo-second-order kinetic model. The maximum adsorption capacity obtained from the Langmuir isotherm model is higher for doped (91.28–168.92 mg/g) and co-doped (152.97–488.06 mg/g) samples than for pristine sample (59.75–266.28 mg/g). Calculated adsorption energy values from the Dubinin-Radushkevich model indicate that the possible mechanism was physisorption. Desorption tests that were carried out showed satisfactory reusability for all samples. The favorable adsorption characteristics for the co-doped sample with a higher nominal concentration of nitrogen and sulfur qualifies as a potentially good adsorbent for the removal of pharmaceuticals from water.
T2  - Journal of Environmental Chemical Engineering
T1  - Synthesis of nitrogen doped and nitrogen and sulfur co-doped carbon cryogels and their application for pharmaceuticals removal from water
VL  - 10
IS  - 6
SP  - 108998
DO  - 10.1016/j.jece.2022.108998
ER  - 

@article{
author = "Krstić, Aleksandar D. and Lolić, Aleksandar and Mirković, Miljana M. and Kovač, Janez and Minović-Arsić, Tamara and Babić, Biljana and Kalijadis, Ana",
year = "2022",
abstract = "In this study carbon cryogel, cryogel doped with nitrogen, and both nitrogen and sulfur co-doped carbon cryogels (nominal concentration of nitrogen was in the range 2–10 wt%) were synthesized and used as an adsorbent for the removal of carbamazepine, naproxen, diazepam and diclofenac from water. A batch adsorption kinetics study was performed by determination of contact time influence, the effect of pH, and adsorption isotherms. Structural and morphological analysis showed that there are no changes in turbostratic carbon structure induced by doping/co-doping, but noticeable morphology changes were observed. The presence of both nitrogen and nitrogen/sulfur were confirmed and results showed low content on the surface, especially for sulfur. Obtained high values of the specific surface area for co-doped samples (up to 1530 m2/g) can be caused by sulfur atoms burning or leaving the material during carbonization. The results of the adsorption kinetics study showed that the adsorption of all pharmaceuticals on all tested samples followed the pseudo-second-order kinetic model. The maximum adsorption capacity obtained from the Langmuir isotherm model is higher for doped (91.28–168.92 mg/g) and co-doped (152.97–488.06 mg/g) samples than for pristine sample (59.75–266.28 mg/g). Calculated adsorption energy values from the Dubinin-Radushkevich model indicate that the possible mechanism was physisorption. Desorption tests that were carried out showed satisfactory reusability for all samples. The favorable adsorption characteristics for the co-doped sample with a higher nominal concentration of nitrogen and sulfur qualifies as a potentially good adsorbent for the removal of pharmaceuticals from water.",
journal = "Journal of Environmental Chemical Engineering",
title = "Synthesis of nitrogen doped and nitrogen and sulfur co-doped carbon cryogels and their application for pharmaceuticals removal from water",
volume = "10",
number = "6",
pages = "108998",
doi = "10.1016/j.jece.2022.108998"
}

Krstić, A. D., Lolić, A., Mirković, M. M., Kovač, J., Minović-Arsić, T., Babić, B.,& Kalijadis, A.. (2022). Synthesis of nitrogen doped and nitrogen and sulfur co-doped carbon cryogels and their application for pharmaceuticals removal from water. in Journal of Environmental Chemical Engineering, 10(6), 108998.
https://doi.org/10.1016/j.jece.2022.108998

Krstić AD, Lolić A, Mirković MM, Kovač J, Minović-Arsić T, Babić B, Kalijadis A. Synthesis of nitrogen doped and nitrogen and sulfur co-doped carbon cryogels and their application for pharmaceuticals removal from water. in Journal of Environmental Chemical Engineering. 2022;10(6):108998.
doi:10.1016/j.jece.2022.108998 .

Krstić, Aleksandar D., Lolić, Aleksandar, Mirković, Miljana M., Kovač, Janez, Minović-Arsić, Tamara, Babić, Biljana, Kalijadis, Ana, "Synthesis of nitrogen doped and nitrogen and sulfur co-doped carbon cryogels and their application for pharmaceuticals removal from water" in Journal of Environmental Chemical Engineering, 10, no. 6 (2022):108998,
https://doi.org/10.1016/j.jece.2022.108998 . .

TY  - CONF
AU  - Katnić, Đurica
AU  - Kojić, Marija
AU  - Tadić, Julijana
AU  - Vasiljević, Bojana
AU  - Marinović-Cincović, Milena
AU  - Krstić, Aleksandar
AU  - Porobić, Slavica
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11420
AB  - Removal of heavy metals is important because of their toxic effects on living organisms and unwanted anthropogenic effects. Biochar is suitable as an adsorbent of heavy metals due to its advantages such as various sources of biomass, a large number of microporous channels and surface functional groups, as well as due to its economic viability. There is no data about the plum pomace biochar usage as adsorbent for lead removal. In this study, the plum pomace biochar modified with gamma irradiation (IrPP) is used for the removal of Pb2+ ions from the aqueous solution. The SEM micrographs revealed that surface morphology of plum pomace is suitable for metal adsorption. The results of adsorption kinetics demonstrated that the removal process of Pb2+ ions onto IrPP follows a pseudo-second kinetic model, which is confirmed by a better agreement between qe,cal=227 mg g–1 and qe,exp=224 mg g–1. Therefore, based on preliminary research, it can be concluded that IrPP originating from biowaste is a promising, eco-friendly sorbent of heavy metal from wastewater.
PB  - Szeged : University of Szeged
C3  - 27th International Symposium on Analytical and Environmental Problems : Proceedings; November 22-23, 2021; Szeged, Hungary
T1  - Adsorption of Pb2+ Ions on Gamma Irradiated Plum Pomace Biochar
SP  - 155
EP  - 158
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11420
ER  - 

@conference{
author = "Katnić, Đurica and Kojić, Marija and Tadić, Julijana and Vasiljević, Bojana and Marinović-Cincović, Milena and Krstić, Aleksandar and Porobić, Slavica",
year = "2021",
abstract = "Removal of heavy metals is important because of their toxic effects on living organisms and unwanted anthropogenic effects. Biochar is suitable as an adsorbent of heavy metals due to its advantages such as various sources of biomass, a large number of microporous channels and surface functional groups, as well as due to its economic viability. There is no data about the plum pomace biochar usage as adsorbent for lead removal. In this study, the plum pomace biochar modified with gamma irradiation (IrPP) is used for the removal of Pb2+ ions from the aqueous solution. The SEM micrographs revealed that surface morphology of plum pomace is suitable for metal adsorption. The results of adsorption kinetics demonstrated that the removal process of Pb2+ ions onto IrPP follows a pseudo-second kinetic model, which is confirmed by a better agreement between qe,cal=227 mg g–1 and qe,exp=224 mg g–1. Therefore, based on preliminary research, it can be concluded that IrPP originating from biowaste is a promising, eco-friendly sorbent of heavy metal from wastewater.",
publisher = "Szeged : University of Szeged",
journal = "27th International Symposium on Analytical and Environmental Problems : Proceedings; November 22-23, 2021; Szeged, Hungary",
title = "Adsorption of Pb2+ Ions on Gamma Irradiated Plum Pomace Biochar",
pages = "155-158",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11420"
}

Katnić, Đ., Kojić, M., Tadić, J., Vasiljević, B., Marinović-Cincović, M., Krstić, A.,& Porobić, S.. (2021). Adsorption of Pb2+ Ions on Gamma Irradiated Plum Pomace Biochar. in 27th International Symposium on Analytical and Environmental Problems : Proceedings; November 22-23, 2021; Szeged, Hungary
Szeged : University of Szeged., 155-158.
https://hdl.handle.net/21.15107/rcub_vinar_11420

Katnić Đ, Kojić M, Tadić J, Vasiljević B, Marinović-Cincović M, Krstić A, Porobić S. Adsorption of Pb2+ Ions on Gamma Irradiated Plum Pomace Biochar. in 27th International Symposium on Analytical and Environmental Problems : Proceedings; November 22-23, 2021; Szeged, Hungary. 2021;:155-158.
https://hdl.handle.net/21.15107/rcub_vinar_11420 .

Katnić, Đurica, Kojić, Marija, Tadić, Julijana, Vasiljević, Bojana, Marinović-Cincović, Milena, Krstić, Aleksandar, Porobić, Slavica, "Adsorption of Pb2+ Ions on Gamma Irradiated Plum Pomace Biochar" in 27th International Symposium on Analytical and Environmental Problems : Proceedings; November 22-23, 2021; Szeged, Hungary (2021):155-158,
https://hdl.handle.net/21.15107/rcub_vinar_11420 .

TY  - CONF
AU  - Katnić, Đurica
AU  - Porobić, Slavica
AU  - Krstić, Aleksandar
AU  - Petrović, Jelena D.
AU  - Kojić, Marija
AU  - Živojinović, Dragana
AU  - Marinović-Cincović, Milena
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12760
AB  - Biochar produced by pyrolysis of plum and fig pomace at 500 C were characterized and investigated as adsorbents for the removal of heavy metal ions from aqueous solution. Plum and fig pomace are formed after fermentation of this fruit which is used for the preparation of brandy. The brandy industry generates huge amounts of pomace as industrial waste, so pyrolysis as thermochemical technologies was used for organic agro-industrial waste treatment. Plum and fig pomace before and after pyrolysis was characterized using proximate, inorganic and elemental analysis, Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), X-ray diffraction (XRD), thermogravimetric analysis (TGA) and differential thermal analysis (DTA). Biochar has a carbon matrix with a high degree of porosity and large surface area, suggesting that it can be used as a surface adsorbent and thus have a significant role in controlling environmental contaminants. The surface modification by gamma irradiation was done to enhance the adsorption capacity of biochar. The heavy metals contents in aqueous solution were analyzed using ICP-OES. The adsorption capacity was estimated using the Langmuir and Freundlich model. The results of this work suggest that pyrolysis and irradiation of biomass is a promising way to produce efficient heavy metal sorbents for waste-water treatment.
PB  - Banja Luka : University PIM
C3  - X International Conference on Social and Technological Development STED 2021 : Book of abstracts
T1  - Irradiation Modified Biochar for Heavy Metal Adsorption in Aqueous Solution
SP  - 101
EP  - 101
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12760
ER  - 

@conference{
author = "Katnić, Đurica and Porobić, Slavica and Krstić, Aleksandar and Petrović, Jelena D. and Kojić, Marija and Živojinović, Dragana and Marinović-Cincović, Milena",
year = "2021",
abstract = "Biochar produced by pyrolysis of plum and fig pomace at 500 C were characterized and investigated as adsorbents for the removal of heavy metal ions from aqueous solution. Plum and fig pomace are formed after fermentation of this fruit which is used for the preparation of brandy. The brandy industry generates huge amounts of pomace as industrial waste, so pyrolysis as thermochemical technologies was used for organic agro-industrial waste treatment. Plum and fig pomace before and after pyrolysis was characterized using proximate, inorganic and elemental analysis, Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), X-ray diffraction (XRD), thermogravimetric analysis (TGA) and differential thermal analysis (DTA). Biochar has a carbon matrix with a high degree of porosity and large surface area, suggesting that it can be used as a surface adsorbent and thus have a significant role in controlling environmental contaminants. The surface modification by gamma irradiation was done to enhance the adsorption capacity of biochar. The heavy metals contents in aqueous solution were analyzed using ICP-OES. The adsorption capacity was estimated using the Langmuir and Freundlich model. The results of this work suggest that pyrolysis and irradiation of biomass is a promising way to produce efficient heavy metal sorbents for waste-water treatment.",
publisher = "Banja Luka : University PIM",
journal = "X International Conference on Social and Technological Development STED 2021 : Book of abstracts",
title = "Irradiation Modified Biochar for Heavy Metal Adsorption in Aqueous Solution",
pages = "101-101",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12760"
}

Katnić, Đ., Porobić, S., Krstić, A., Petrović, J. D., Kojić, M., Živojinović, D.,& Marinović-Cincović, M.. (2021). Irradiation Modified Biochar for Heavy Metal Adsorption in Aqueous Solution. in X International Conference on Social and Technological Development STED 2021 : Book of abstracts
Banja Luka : University PIM., 101-101.
https://hdl.handle.net/21.15107/rcub_vinar_12760

Katnić Đ, Porobić S, Krstić A, Petrović JD, Kojić M, Živojinović D, Marinović-Cincović M. Irradiation Modified Biochar for Heavy Metal Adsorption in Aqueous Solution. in X International Conference on Social and Technological Development STED 2021 : Book of abstracts. 2021;:101-101.
https://hdl.handle.net/21.15107/rcub_vinar_12760 .

Katnić, Đurica, Porobić, Slavica, Krstić, Aleksandar, Petrović, Jelena D., Kojić, Marija, Živojinović, Dragana, Marinović-Cincović, Milena, "Irradiation Modified Biochar for Heavy Metal Adsorption in Aqueous Solution" in X International Conference on Social and Technological Development STED 2021 : Book of abstracts (2021):101-101,
https://hdl.handle.net/21.15107/rcub_vinar_12760 .

TY  - JOUR
AU  - Marić, Slađana
AU  - Jocić, Ana
AU  - Krstić, Aleksandar
AU  - Momčilović, Miloš
AU  - Ignjatović, Ljubiša M.
AU  - Dimitrijević, Aleksandra
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9845
AB  - Unused/expired pharmaceuticals can be regarded as a source of valuable compounds. Valorization of active pharmaceutical ingredients (APIs) from pharmaceutical waste, as an alternative to widely adopted treatment by incineration, is a big challenge in terms of designing green, efficient, scalable and sustainable separation methods. Concerning these demands, this work aimed to investigate and propose new integrated extraction technology based on aqueous biphasic systems (ABS) with eco-friendly components namely, poloxamer (Pluronic PE 6200) and one of two salts (sodium citrate, cholinium dihydrogenphosphate) or ionic liquid (1-butyl-3-methylimidazolium chloride). Liquid-liquid equilibria of each ABS were determined at room temperature followed by partition experiments in the biphasic medium to evaluate the most favorable systems for APIs extraction (acetaminophen and caffeine from one commercial product, and theophylline from the other). The finely designed ABSs were then employed to separate APIs from pharmaceutical solids and fractionate them. The results show that citrate-based ABS induces the strongest salting-out effect leading to extraction of all APIs to the Pluronic-rich phase with high recovery efficiencies between 79.4 and 97.90%; insoluble compounds were removed as residues while hydrophilic excipients remained in the citrate-rich aqueous phase. Ionic liquid/PL6200-based ABS was further applied to fractionate acetaminophen and caffeine toward opposite phases. These results underpin the viability and adjustability of PL6200-based ABSs within an integrated process, by a deftly selected salting-out agent, as a sustainable and efficient alternative platform with the great potential to be implemented on a larger scale.
T2  - Separation and Purification Technology
T1  - Poloxamer-based aqueous biphasic systems in designing an integrated extraction platform for the valorization of pharmaceutical waste
VL  - 275
SP  - 119101
DO  - 10.1016/j.seppur.2021.119101
ER  - 

@article{
author = "Marić, Slađana and Jocić, Ana and Krstić, Aleksandar and Momčilović, Miloš and Ignjatović, Ljubiša M. and Dimitrijević, Aleksandra",
year = "2021",
abstract = "Unused/expired pharmaceuticals can be regarded as a source of valuable compounds. Valorization of active pharmaceutical ingredients (APIs) from pharmaceutical waste, as an alternative to widely adopted treatment by incineration, is a big challenge in terms of designing green, efficient, scalable and sustainable separation methods. Concerning these demands, this work aimed to investigate and propose new integrated extraction technology based on aqueous biphasic systems (ABS) with eco-friendly components namely, poloxamer (Pluronic PE 6200) and one of two salts (sodium citrate, cholinium dihydrogenphosphate) or ionic liquid (1-butyl-3-methylimidazolium chloride). Liquid-liquid equilibria of each ABS were determined at room temperature followed by partition experiments in the biphasic medium to evaluate the most favorable systems for APIs extraction (acetaminophen and caffeine from one commercial product, and theophylline from the other). The finely designed ABSs were then employed to separate APIs from pharmaceutical solids and fractionate them. The results show that citrate-based ABS induces the strongest salting-out effect leading to extraction of all APIs to the Pluronic-rich phase with high recovery efficiencies between 79.4 and 97.90%; insoluble compounds were removed as residues while hydrophilic excipients remained in the citrate-rich aqueous phase. Ionic liquid/PL6200-based ABS was further applied to fractionate acetaminophen and caffeine toward opposite phases. These results underpin the viability and adjustability of PL6200-based ABSs within an integrated process, by a deftly selected salting-out agent, as a sustainable and efficient alternative platform with the great potential to be implemented on a larger scale.",
journal = "Separation and Purification Technology",
title = "Poloxamer-based aqueous biphasic systems in designing an integrated extraction platform for the valorization of pharmaceutical waste",
volume = "275",
pages = "119101",
doi = "10.1016/j.seppur.2021.119101"
}

Marić, S., Jocić, A., Krstić, A., Momčilović, M., Ignjatović, L. M.,& Dimitrijević, A.. (2021). Poloxamer-based aqueous biphasic systems in designing an integrated extraction platform for the valorization of pharmaceutical waste. in Separation and Purification Technology, 275, 119101.
https://doi.org/10.1016/j.seppur.2021.119101

Marić S, Jocić A, Krstić A, Momčilović M, Ignjatović LM, Dimitrijević A. Poloxamer-based aqueous biphasic systems in designing an integrated extraction platform for the valorization of pharmaceutical waste. in Separation and Purification Technology. 2021;275:119101.
doi:10.1016/j.seppur.2021.119101 .

Marić, Slađana, Jocić, Ana, Krstić, Aleksandar, Momčilović, Miloš, Ignjatović, Ljubiša M., Dimitrijević, Aleksandra, "Poloxamer-based aqueous biphasic systems in designing an integrated extraction platform for the valorization of pharmaceutical waste" in Separation and Purification Technology, 275 (2021):119101,
https://doi.org/10.1016/j.seppur.2021.119101 . .

TY  - JOUR
AU  - Kalijadis, Ana
AU  - Gavrilov, Nemanja M.
AU  - Jokić, Bojan M.
AU  - Gilić, Martina
AU  - Krstić, Aleksandar D.
AU  - Pašti, Igor A.
AU  - Babić, Biljana M.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8495
AB  - Resorcinol–formaldehyde (RF) cryogels were synthesized by sol–gel polycondensation of resorcinol with formaldehyde and freeze-drying was carried out with t-butanol. Carbon cryogel (CC) was obtained by pyrolyzing RF cryogels in an inert atmosphere to 950 °C. Nitrogen doped CCs (CCN) were synthesized by introducing melamine into RF precursor mixture solution to obtain nitrogen concentration 2, 6 and 10 wt.%. Material was characterized by elemental analysis, nitrogen adsorption– desorption measurements, scanning electron microscopy (SEM), Raman spectroscopy, FT-IR Spectroscopy. Cyclic voltammetry (CV) was used to investigate capacitive and electrocatalytic properties. Conductivity measurement was also performed. Elemental analysis results confirmed presence of nitrogen in CCN samples in the range from 0.45 to 1.15 wt.%. Raman spectroscopy of the samples showed increase of D and G peak integrated intensity ratio (ID/IG) with nitrogen doping suggesting that the structural disorder as well as edge plane density increase, but according to similar ID/IG values for CCN samples, their share is not directly related to the amount of incorporated N. Characterization by nitrogen adsorption showed that overall specific surface and maximum mesopores are achieved in CCN sample with medium nitrogen concentration. Results of cyclic voltammetry experiments demonstrated maximum capacitance for CCN sample with smallest N wt.% indicating that narrow pore size distribution and high specific surface area are dominant factors to achieve good capacitive behavior. The relatively low doping level of nitrogen reached in CCN samples may be the reason for the incomplete reduction of oxygen to hydroxide and furthermore it turned out that presence of N in the structure of CC had a negligible effect on the otherwise relatively high conductivity of CC. © 2019 Elsevier B.V.
T2  - Materials Chemistry and Physics
T1  - Composition, structure and potential energy application of nitrogen doped carbon cryogels
VL  - 239
SP  - 122120
DO  - 10.1016/j.matchemphys.2019.122120
ER  - 

@article{
author = "Kalijadis, Ana and Gavrilov, Nemanja M. and Jokić, Bojan M. and Gilić, Martina and Krstić, Aleksandar D. and Pašti, Igor A. and Babić, Biljana M.",
year = "2020",
abstract = "Resorcinol–formaldehyde (RF) cryogels were synthesized by sol–gel polycondensation of resorcinol with formaldehyde and freeze-drying was carried out with t-butanol. Carbon cryogel (CC) was obtained by pyrolyzing RF cryogels in an inert atmosphere to 950 °C. Nitrogen doped CCs (CCN) were synthesized by introducing melamine into RF precursor mixture solution to obtain nitrogen concentration 2, 6 and 10 wt.%. Material was characterized by elemental analysis, nitrogen adsorption– desorption measurements, scanning electron microscopy (SEM), Raman spectroscopy, FT-IR Spectroscopy. Cyclic voltammetry (CV) was used to investigate capacitive and electrocatalytic properties. Conductivity measurement was also performed. Elemental analysis results confirmed presence of nitrogen in CCN samples in the range from 0.45 to 1.15 wt.%. Raman spectroscopy of the samples showed increase of D and G peak integrated intensity ratio (ID/IG) with nitrogen doping suggesting that the structural disorder as well as edge plane density increase, but according to similar ID/IG values for CCN samples, their share is not directly related to the amount of incorporated N. Characterization by nitrogen adsorption showed that overall specific surface and maximum mesopores are achieved in CCN sample with medium nitrogen concentration. Results of cyclic voltammetry experiments demonstrated maximum capacitance for CCN sample with smallest N wt.% indicating that narrow pore size distribution and high specific surface area are dominant factors to achieve good capacitive behavior. The relatively low doping level of nitrogen reached in CCN samples may be the reason for the incomplete reduction of oxygen to hydroxide and furthermore it turned out that presence of N in the structure of CC had a negligible effect on the otherwise relatively high conductivity of CC. © 2019 Elsevier B.V.",
journal = "Materials Chemistry and Physics",
title = "Composition, structure and potential energy application of nitrogen doped carbon cryogels",
volume = "239",
pages = "122120",
doi = "10.1016/j.matchemphys.2019.122120"
}

Kalijadis, A., Gavrilov, N. M., Jokić, B. M., Gilić, M., Krstić, A. D., Pašti, I. A.,& Babić, B. M.. (2020). Composition, structure and potential energy application of nitrogen doped carbon cryogels. in Materials Chemistry and Physics, 239, 122120.
https://doi.org/10.1016/j.matchemphys.2019.122120

Kalijadis A, Gavrilov NM, Jokić BM, Gilić M, Krstić AD, Pašti IA, Babić BM. Composition, structure and potential energy application of nitrogen doped carbon cryogels. in Materials Chemistry and Physics. 2020;239:122120.
doi:10.1016/j.matchemphys.2019.122120 .

Kalijadis, Ana, Gavrilov, Nemanja M., Jokić, Bojan M., Gilić, Martina, Krstić, Aleksandar D., Pašti, Igor A., Babić, Biljana M., "Composition, structure and potential energy application of nitrogen doped carbon cryogels" in Materials Chemistry and Physics, 239 (2020):122120,
https://doi.org/10.1016/j.matchemphys.2019.122120 . .

TY  - JOUR
AU  - Porobić, Slavica
AU  - Krstić, Aleksandar D.
AU  - Jovanović, Dragana J.
AU  - Lađarević, Jelena M.
AU  - Katnić, Đurica B.
AU  - Mijin, Dušan Ž.
AU  - Marinović-Cincović, Milena
PY  - 2019
UR  - https://linkinghub.elsevier.com/retrieve/pii/S0143720819310551
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8228
AB  - Thermal degradation properties of 5-(4-substitutedphenylazo)-3-amido-6-hydroxy-4-methyl-2-pyridones and 5-(4-substitutedphenylazo)-3-cyano-6-hydroxy-4-methyl-2-pyridones dyes, differing in electron withdrawing and electron donating substituents in para-position of diazo components were examined. The structure of the synthesized compounds has been confirmed by 1H NMR,13C NMR, FTIR, UV–Vis and XRD analysis techniques. The results obtained with thermogravimetric analysis (TGA) – derivative thermogravimetry (DTG) and differential thermal analysis (DTA) were combined with GC-mass spectral fragmentation to obtain thermal decomposition mechanism. Non-isothermal kinetics were monitored by application of TGA-DTG-DTA. For Kinetic behavior of the investigated dyes during their degradation in an inert atmosphere, Kissinger, Ozawa, Flynn-Wall-Ozawa (FWO) and Kissinger-Akahira-Sunose (KAS) isoconversional (model-free) methods were applied. It was found that different thermal stabilities of investigated dyes are the consequence of their different chemical structures, including diverse substituents. © 2019
T2  - Dyes and Pigments
T1  - Synthesis and thermal properties of arylazo pyridone dyes
VL  - 170
SP  - 107602
DO  - 10.1016/j.dyepig.2019.107602
ER  - 

@article{
author = "Porobić, Slavica and Krstić, Aleksandar D. and Jovanović, Dragana J. and Lađarević, Jelena M. and Katnić, Đurica B. and Mijin, Dušan Ž. and Marinović-Cincović, Milena",
year = "2019",
abstract = "Thermal degradation properties of 5-(4-substitutedphenylazo)-3-amido-6-hydroxy-4-methyl-2-pyridones and 5-(4-substitutedphenylazo)-3-cyano-6-hydroxy-4-methyl-2-pyridones dyes, differing in electron withdrawing and electron donating substituents in para-position of diazo components were examined. The structure of the synthesized compounds has been confirmed by 1H NMR,13C NMR, FTIR, UV–Vis and XRD analysis techniques. The results obtained with thermogravimetric analysis (TGA) – derivative thermogravimetry (DTG) and differential thermal analysis (DTA) were combined with GC-mass spectral fragmentation to obtain thermal decomposition mechanism. Non-isothermal kinetics were monitored by application of TGA-DTG-DTA. For Kinetic behavior of the investigated dyes during their degradation in an inert atmosphere, Kissinger, Ozawa, Flynn-Wall-Ozawa (FWO) and Kissinger-Akahira-Sunose (KAS) isoconversional (model-free) methods were applied. It was found that different thermal stabilities of investigated dyes are the consequence of their different chemical structures, including diverse substituents. © 2019",
journal = "Dyes and Pigments",
title = "Synthesis and thermal properties of arylazo pyridone dyes",
volume = "170",
pages = "107602",
doi = "10.1016/j.dyepig.2019.107602"
}

Porobić, S., Krstić, A. D., Jovanović, D. J., Lađarević, J. M., Katnić, Đ. B., Mijin, D. Ž.,& Marinović-Cincović, M.. (2019). Synthesis and thermal properties of arylazo pyridone dyes. in Dyes and Pigments, 170, 107602.
https://doi.org/10.1016/j.dyepig.2019.107602

Porobić S, Krstić AD, Jovanović DJ, Lađarević JM, Katnić ĐB, Mijin DŽ, Marinović-Cincović M. Synthesis and thermal properties of arylazo pyridone dyes. in Dyes and Pigments. 2019;170:107602.
doi:10.1016/j.dyepig.2019.107602 .

Porobić, Slavica, Krstić, Aleksandar D., Jovanović, Dragana J., Lađarević, Jelena M., Katnić, Đurica B., Mijin, Dušan Ž., Marinović-Cincović, Milena, "Synthesis and thermal properties of arylazo pyridone dyes" in Dyes and Pigments, 170 (2019):107602,
https://doi.org/10.1016/j.dyepig.2019.107602 . .

TY  - CONF
AU  - Krstić, Aleksandar D.
AU  - Ječmenica Dučić, Marija
AU  - Seović, Mina
AU  - Katnić, Đurica
AU  - Pijović, Milena
AU  - Šutulović, Adrijana
AU  - Tasić, Gvozden
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12643
AB  - Polychlorinated biphenyls (PCBs) are the most highly toxic species of POPs. More than 200 PCB congeners exist in nature. [1] PCBs are highly toxic for humans. They enter the human body via inhalation, ingestion or sorption through the skin and the bloodstream transports them to the organs, muscles and adipose tissues, where they are accumulated. This study presents the validation of analytical method for determination of 7 PCBs congeners in soil: PCB 28, PCB 52, PCB 101, PCB 118, PCB 153, and PCB 180. The method is based on solid- liquid extraction with cyclohexane and the analysis by gas chromatography with mass spectrometric detection (GC-MS). [2] Samples were analyzed in SIM mode, and the analytes qualitative confirmation was performed comparing the mass spectra of analytical standards of PCB congeners with the NIST data base. The method developed can be applied in range from 0,005 to 10 mg/kg with the appropriate parameters of precision, accuracy, repeatability and linearity and can be used for simultaneous determination of low PCBs concentrations in different types of soil (agricultural, contaminated soil, etc.).
PB  - Szeged : University of Szeged
C3  - 25th International Symposium on Analytical and Environmental Problems : proceedings
T1  - Validation method for determination od PCB congeners in soil using GC-MS
SP  - 175
EP  - 177
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12643
ER  - 

@conference{
author = "Krstić, Aleksandar D. and Ječmenica Dučić, Marija and Seović, Mina and Katnić, Đurica and Pijović, Milena and Šutulović, Adrijana and Tasić, Gvozden",
year = "2019",
abstract = "Polychlorinated biphenyls (PCBs) are the most highly toxic species of POPs. More than 200 PCB congeners exist in nature. [1] PCBs are highly toxic for humans. They enter the human body via inhalation, ingestion or sorption through the skin and the bloodstream transports them to the organs, muscles and adipose tissues, where they are accumulated. This study presents the validation of analytical method for determination of 7 PCBs congeners in soil: PCB 28, PCB 52, PCB 101, PCB 118, PCB 153, and PCB 180. The method is based on solid- liquid extraction with cyclohexane and the analysis by gas chromatography with mass spectrometric detection (GC-MS). [2] Samples were analyzed in SIM mode, and the analytes qualitative confirmation was performed comparing the mass spectra of analytical standards of PCB congeners with the NIST data base. The method developed can be applied in range from 0,005 to 10 mg/kg with the appropriate parameters of precision, accuracy, repeatability and linearity and can be used for simultaneous determination of low PCBs concentrations in different types of soil (agricultural, contaminated soil, etc.).",
publisher = "Szeged : University of Szeged",
journal = "25th International Symposium on Analytical and Environmental Problems : proceedings",
title = "Validation method for determination od PCB congeners in soil using GC-MS",
pages = "175-177",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12643"
}

Krstić, A. D., Ječmenica Dučić, M., Seović, M., Katnić, Đ., Pijović, M., Šutulović, A.,& Tasić, G.. (2019). Validation method for determination od PCB congeners in soil using GC-MS. in 25th International Symposium on Analytical and Environmental Problems : proceedings
Szeged : University of Szeged., 175-177.
https://hdl.handle.net/21.15107/rcub_vinar_12643

Krstić AD, Ječmenica Dučić M, Seović M, Katnić Đ, Pijović M, Šutulović A, Tasić G. Validation method for determination od PCB congeners in soil using GC-MS. in 25th International Symposium on Analytical and Environmental Problems : proceedings. 2019;:175-177.
https://hdl.handle.net/21.15107/rcub_vinar_12643 .

Krstić, Aleksandar D., Ječmenica Dučić, Marija, Seović, Mina, Katnić, Đurica, Pijović, Milena, Šutulović, Adrijana, Tasić, Gvozden, "Validation method for determination od PCB congeners in soil using GC-MS" in 25th International Symposium on Analytical and Environmental Problems : proceedings (2019):175-177,
https://hdl.handle.net/21.15107/rcub_vinar_12643 .