TY  - JOUR
AU  - Dimitrijević, Jelena
AU  - Jevtić, Sanja
AU  - Marinković, Aleksandar
AU  - Simić, Marija
AU  - Koprivica, Marija
AU  - Petrović, Jelena
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6463
UR  - https://ritnms.itnms.ac.rs/handle/123456789/661
AB  - In the proposed study, agro-waste biomass oat straw (OS) was considered a potential adsorbent for Cu(II), Zn(II), and Se(IV) removal from aqueous solutions. In order to obtain material with better adsorption abilities, the OS was modified by a deep eutectic solvent (DES). Structural changes caused by the applied modification route were considered by pHpzc, SEM, FTIR, and DSC/TG analysis. These methods discovered that lignocellulosic biomass degradation and material functionalization were achieved by DES treatment. Preliminary adsorption tests showed an over fourfold increase in capacity upon modification. The kinetic parameters implied that adsorption on modified material followed the pseudo-second-order kinetic model. Different isotherm models were applied to experimental data, while the Sips isotherm model best describes the equilibrium of the adsorption process on the tested modified material. According to this isotherm model, the maximum achieved adsorption capacities of Cu(II), Zn(II), and Se(IV) were 48.21, 55.06, and 87.85 mg/g, respectively. The summarized experimental results revealed that the adsorption process of selected cations on modified OS was predominantly caused by chemisorption, while, in addition to chemisorption, electrostatic forces were also responsible for Se(IV) removal. Desorption test showed that the prepared material could be reused for at least 3 cycles, with minimal efficiency loss. Briefly, this study reinforces that DES-modified agro-waste biomass could be used as a promising adsorbent for cations and oxyanions from wastewater.
PB  - MDPI
T2  - Processes
T1  - Ability of Deep Eutectic Solvent Modified Oat Straw for Cu(II), Zn(II), and Se(IV) Ions Removal
IS  - 5
SP  - 1308
VL  - 11
DO  - 10.3390/pr11051308
ER  - 

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

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

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

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

TY  - CONF
AU  - Jevtić, Sanja
AU  - Dimitrijević, Jelena
AU  - Petrović, Jelena
AU  - Dikić, Jelena
PY  - 2022
UR  - https://ritnms.itnms.ac.rs/handle/123456789/860
AB  - Natural zeolite-clinoptilolite (from Vranjska Banja deposit in Serbia) and synthetic Beta zeolite,
were amin-functionalized using (3-aminopropyl)-triethoxysilane (APTES). The results of the
Fourier transform infrared spectroscopy and thermogravimetric analysis confirmed the presence of
amino groups derived from APTES onto the modified zeolite surface. APTES-enriched zeolite was
further used as an adsorbent of silver ions from aqueous solutions. Natural zeolite-clinoptilolite
showed a higher adsorption capacity (96 mg Ag/g), compared to beta zeolite (54 mg Ag/g) which is
attributed to the presence of exchangeable cations in the structure of clinoptilolite. The kinetic data
follows the pseudo-second-order model which indicates a chemical interaction between silver ions
and functional amino groups on the surface of the zeolite. Ag-APTES and APTES-enriched zeolites
further were studied as antibacterial agents toward the pathogenic bacteria Gram-negative
Escherichia coli DSM 498 and Gram-positive Staphylococcus aureus ATCC 25923. Based on the

results, it was concluded that the APTES-zeolites do not exhibit antibacterial activity while Ag-
APTES enriched zeolites shows antibacterial effect toward both examined bacterial strains.

Antibacterial activity is attributed to the presence of silver ions.
PB  - Banja Luka : University in Banja Luka, Faculty of Technology
C3  - XIV CONFERENCE OF CHEMISTS, TECHNOLOGISTS AND ENVIRONMENTALISTS OF REPUBLIC OF SRPSKA
T1  - Antibacterial activity of surface amine-functionalized silver-enriched zeolite
EP  - 178
SP  - 178
ER  - 

@conference{
author = "Jevtić, Sanja and Dimitrijević, Jelena and Petrović, Jelena and Dikić, Jelena",
year = "2022",
abstract = "Natural zeolite-clinoptilolite (from Vranjska Banja deposit in Serbia) and synthetic Beta zeolite,
were amin-functionalized using (3-aminopropyl)-triethoxysilane (APTES). The results of the
Fourier transform infrared spectroscopy and thermogravimetric analysis confirmed the presence of
amino groups derived from APTES onto the modified zeolite surface. APTES-enriched zeolite was
further used as an adsorbent of silver ions from aqueous solutions. Natural zeolite-clinoptilolite
showed a higher adsorption capacity (96 mg Ag/g), compared to beta zeolite (54 mg Ag/g) which is
attributed to the presence of exchangeable cations in the structure of clinoptilolite. The kinetic data
follows the pseudo-second-order model which indicates a chemical interaction between silver ions
and functional amino groups on the surface of the zeolite. Ag-APTES and APTES-enriched zeolites
further were studied as antibacterial agents toward the pathogenic bacteria Gram-negative
Escherichia coli DSM 498 and Gram-positive Staphylococcus aureus ATCC 25923. Based on the

results, it was concluded that the APTES-zeolites do not exhibit antibacterial activity while Ag-
APTES enriched zeolites shows antibacterial effect toward both examined bacterial strains.

Antibacterial activity is attributed to the presence of silver ions.",
publisher = "Banja Luka : University in Banja Luka, Faculty of Technology",
journal = "XIV CONFERENCE OF CHEMISTS, TECHNOLOGISTS AND ENVIRONMENTALISTS OF REPUBLIC OF SRPSKA",
title = "Antibacterial activity of surface amine-functionalized silver-enriched zeolite",
pages = "178-178"
}

Jevtić, S., Dimitrijević, J., Petrović, J.,& Dikić, J.. (2022). Antibacterial activity of surface amine-functionalized silver-enriched zeolite. in XIV CONFERENCE OF CHEMISTS, TECHNOLOGISTS AND ENVIRONMENTALISTS OF REPUBLIC OF SRPSKA
Banja Luka : University in Banja Luka, Faculty of Technology., 178-178.

Jevtić S, Dimitrijević J, Petrović J, Dikić J. Antibacterial activity of surface amine-functionalized silver-enriched zeolite. in XIV CONFERENCE OF CHEMISTS, TECHNOLOGISTS AND ENVIRONMENTALISTS OF REPUBLIC OF SRPSKA. 2022;:178-178..

Jevtić, Sanja, Dimitrijević, Jelena, Petrović, Jelena, Dikić, Jelena, "Antibacterial activity of surface amine-functionalized silver-enriched zeolite" in XIV CONFERENCE OF CHEMISTS, TECHNOLOGISTS AND ENVIRONMENTALISTS OF REPUBLIC OF SRPSKA (2022):178-178.