Nastasović, Aleksandra

Link to this page

Authority KeyName Variants
150ff8ff-eea9-441c-9130-2aa7a6e68900
  • Nastasović, Aleksandra (3)
  • Nastasović, Aleksandra B. (1)
Projects

Author's Bibliography

Reductive removal of hexavalent chromium in aqueous solution by magnetic amino-functionalized polymer nanocomposite

Suručić, Ljiljana; Sandić, Zvjezdana; Stanković, Aljoša; Janjić, Goran; Tadić, Tamara; Marković, Bojana; Onjia, Antonije; Nastasović, Aleksandra

(Banja Luka : University PIM, 2023)

TY  - CONF
AU  - Suručić, Ljiljana
AU  - Sandić, Zvjezdana
AU  - Stanković, Aljoša
AU  - Janjić, Goran
AU  - Tadić, Tamara
AU  - Marković, Bojana
AU  - Onjia, Antonije
AU  - Nastasović, Aleksandra
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/7045
AB  - The contamination of water with chromium is a global issue that is especially
severe in developing countries with intensive mining and heavy industry (South
Africa, Pakistan, and India) [1,2]. Trivalent Cr(III) and hexavalent Cr(VI) are the
most common forms found in effluent water. Whereas trivalent chromium is a
micronutrient (25–35 g/day) involved in the metabolism of lipids and carbohydrates
[3,4], hexavalent chromium is exceedingly toxic, teratogenic, and mutagenic.
Particularly concerning are its high solubility in water, mobility in detritus, and
potential for bioaccumulation in living tissues. Due to these factors, hexavalent
chromium has been the subject of numerous studies, especially its removal from
effluent [5,6]. These studies have demonstrated that sorption is a highly effective and
relatively simple technique for chromium removal from wastewater. In terms of this,
magnetic heavy metals nanosorbents derived from inorganic compounds and
polymers [7-9] are incredibly intriguing, because they could have been readily
extracted from the mixture using an external magnetic field. The sorption
investigation of hexavalent chromium in aqueous solutions on the magnetic aminofunctionalized polymer nanocomposite based on glycidyl methacrylate, m-PGMA
revealed its highly selectivity and efficiency. [10,11]. The binding mechanism of hexavalent chromium ions onto m-PGMA was investigated using kinetic,
equilibrium, and thermodynamic experiments as well as molecular modeling
techniques (theoretical quantum-chemical calculations) [12-15]. It was observed that
the process occurs in two phases. In the first phase, electrostatic interactions attract
hexavalent chromium ions to the surface of the sorbent via the active sites (amino
and APTMS groups). Cr(VI) is then converted to Cr(III) ions, which can coordinate
with amino or hydroxyl groups on the surface of the sorbent [16]. The trivalent
chromium ions that persist in the solution or on the surface of the sorbent are less
hazardous than the initial hexavalent form. The application of m-PGMA sorbent
enables the transformation of the toxic form of chromium into a less hazardous form,
which is significant due to the possibility of sorbent regeneration and the subsequent
processing of the solution following sorption.
PB  - Banja Luka : University PIM
C3  - The Book of Abstracts / XII International Conference on Social and Technological Development – STED 2023, Trebinje, June, 15-18, 2023
T1  - Reductive removal of hexavalent chromium in aqueous solution by magnetic amino-functionalized polymer nanocomposite
EP  - 120
SP  - 118
UR  - https://hdl.handle.net/21.15107/rcub_technorep_7045
ER  - 
@conference{
author = "Suručić, Ljiljana and Sandić, Zvjezdana and Stanković, Aljoša and Janjić, Goran and Tadić, Tamara and Marković, Bojana and Onjia, Antonije and Nastasović, Aleksandra",
year = "2023",
abstract = "The contamination of water with chromium is a global issue that is especially
severe in developing countries with intensive mining and heavy industry (South
Africa, Pakistan, and India) [1,2]. Trivalent Cr(III) and hexavalent Cr(VI) are the
most common forms found in effluent water. Whereas trivalent chromium is a
micronutrient (25–35 g/day) involved in the metabolism of lipids and carbohydrates
[3,4], hexavalent chromium is exceedingly toxic, teratogenic, and mutagenic.
Particularly concerning are its high solubility in water, mobility in detritus, and
potential for bioaccumulation in living tissues. Due to these factors, hexavalent
chromium has been the subject of numerous studies, especially its removal from
effluent [5,6]. These studies have demonstrated that sorption is a highly effective and
relatively simple technique for chromium removal from wastewater. In terms of this,
magnetic heavy metals nanosorbents derived from inorganic compounds and
polymers [7-9] are incredibly intriguing, because they could have been readily
extracted from the mixture using an external magnetic field. The sorption
investigation of hexavalent chromium in aqueous solutions on the magnetic aminofunctionalized polymer nanocomposite based on glycidyl methacrylate, m-PGMA
revealed its highly selectivity and efficiency. [10,11]. The binding mechanism of hexavalent chromium ions onto m-PGMA was investigated using kinetic,
equilibrium, and thermodynamic experiments as well as molecular modeling
techniques (theoretical quantum-chemical calculations) [12-15]. It was observed that
the process occurs in two phases. In the first phase, electrostatic interactions attract
hexavalent chromium ions to the surface of the sorbent via the active sites (amino
and APTMS groups). Cr(VI) is then converted to Cr(III) ions, which can coordinate
with amino or hydroxyl groups on the surface of the sorbent [16]. The trivalent
chromium ions that persist in the solution or on the surface of the sorbent are less
hazardous than the initial hexavalent form. The application of m-PGMA sorbent
enables the transformation of the toxic form of chromium into a less hazardous form,
which is significant due to the possibility of sorbent regeneration and the subsequent
processing of the solution following sorption.",
publisher = "Banja Luka : University PIM",
journal = "The Book of Abstracts / XII International Conference on Social and Technological Development – STED 2023, Trebinje, June, 15-18, 2023",
title = "Reductive removal of hexavalent chromium in aqueous solution by magnetic amino-functionalized polymer nanocomposite",
pages = "120-118",
url = "https://hdl.handle.net/21.15107/rcub_technorep_7045"
}
Suručić, L., Sandić, Z., Stanković, A., Janjić, G., Tadić, T., Marković, B., Onjia, A.,& Nastasović, A.. (2023). Reductive removal of hexavalent chromium in aqueous solution by magnetic amino-functionalized polymer nanocomposite. in The Book of Abstracts / XII International Conference on Social and Technological Development – STED 2023, Trebinje, June, 15-18, 2023
Banja Luka : University PIM., 118-120.
https://hdl.handle.net/21.15107/rcub_technorep_7045
Suručić L, Sandić Z, Stanković A, Janjić G, Tadić T, Marković B, Onjia A, Nastasović A. Reductive removal of hexavalent chromium in aqueous solution by magnetic amino-functionalized polymer nanocomposite. in The Book of Abstracts / XII International Conference on Social and Technological Development – STED 2023, Trebinje, June, 15-18, 2023. 2023;:118-120.
https://hdl.handle.net/21.15107/rcub_technorep_7045 .
Suručić, Ljiljana, Sandić, Zvjezdana, Stanković, Aljoša, Janjić, Goran, Tadić, Tamara, Marković, Bojana, Onjia, Antonije, Nastasović, Aleksandra, "Reductive removal of hexavalent chromium in aqueous solution by magnetic amino-functionalized polymer nanocomposite" in The Book of Abstracts / XII International Conference on Social and Technological Development – STED 2023, Trebinje, June, 15-18, 2023 (2023):118-120,
https://hdl.handle.net/21.15107/rcub_technorep_7045 .

Speciation of Hexavalent Chromium in Aqueous Solutions Using a Magnetic Silica-Coated Amino-Modified Glycidyl Methacrylate Polymer Nanocomposite

Suručić, Ljiljana; Janjić, Goran; Marković, Bojana; Tadić, Tamara; Vuković, Zorica; Nastasović, Aleksandra; Onjia, Antonije

(MDPI, 2023)

TY  - JOUR
AU  - Suručić, Ljiljana
AU  - Janjić, Goran
AU  - Marković, Bojana
AU  - Tadić, Tamara
AU  - Vuković, Zorica
AU  - Nastasović, Aleksandra
AU  - Onjia, Antonije
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6357
AB  - A new magnetic amino-functionalized polymeric sorbent based on glycidyl methacrylate was synthesized and used in the separation of chromium Cr(VI) oxyanions sorption from aqueous solutions in a static batch system. The kinetic and isothermal parameters of the sorption process were determined. The experimental data were best fitted by a pseudo-second-order model with R2 = 0.994 and χ2 = 0.004. The sorption process of Cr(VI) removal by amino-functionalized sorbent was controlled by both intraparticle diffusion and liquid film diffusion. The equilibrium results showed that the sorption process is best described by the Freundlich model, followed closely by the Sips isotherm model, with a maximum sorption capacity of 64 mg/g. Quantum chemical modeling revealed that the sorption sites on the sorbent surface are fragments with diethylenetriamine and aminopropyl silane groups that coated the magnetic nanoparticles. The calculations showed that Cr(VI) oxyanions (Cr2O72−, CrO42− and HCrO4−) bind to both sorption sites, with diethylenetriamine centers slightly favored. The X-ray photoelectron spectroscopy (XPS) spectra demonstrate that the chromium bound to the sorbent in the form of Cr(III), indicating that the Cr(VI) can be converted on the surface of the sorbent to a less harmful form Cr(III) due to the sorbent’s chemical composition.
PB  - MDPI
T2  - Materials
T1  - Speciation of Hexavalent Chromium in Aqueous Solutions Using a Magnetic Silica-Coated Amino-Modified Glycidyl Methacrylate Polymer Nanocomposite
IS  - 6
SP  - 2233
VL  - 16
DO  - 10.3390/ma16062233
ER  - 
@article{
author = "Suručić, Ljiljana and Janjić, Goran and Marković, Bojana and Tadić, Tamara and Vuković, Zorica and Nastasović, Aleksandra and Onjia, Antonije",
year = "2023",
abstract = "A new magnetic amino-functionalized polymeric sorbent based on glycidyl methacrylate was synthesized and used in the separation of chromium Cr(VI) oxyanions sorption from aqueous solutions in a static batch system. The kinetic and isothermal parameters of the sorption process were determined. The experimental data were best fitted by a pseudo-second-order model with R2 = 0.994 and χ2 = 0.004. The sorption process of Cr(VI) removal by amino-functionalized sorbent was controlled by both intraparticle diffusion and liquid film diffusion. The equilibrium results showed that the sorption process is best described by the Freundlich model, followed closely by the Sips isotherm model, with a maximum sorption capacity of 64 mg/g. Quantum chemical modeling revealed that the sorption sites on the sorbent surface are fragments with diethylenetriamine and aminopropyl silane groups that coated the magnetic nanoparticles. The calculations showed that Cr(VI) oxyanions (Cr2O72−, CrO42− and HCrO4−) bind to both sorption sites, with diethylenetriamine centers slightly favored. The X-ray photoelectron spectroscopy (XPS) spectra demonstrate that the chromium bound to the sorbent in the form of Cr(III), indicating that the Cr(VI) can be converted on the surface of the sorbent to a less harmful form Cr(III) due to the sorbent’s chemical composition.",
publisher = "MDPI",
journal = "Materials",
title = "Speciation of Hexavalent Chromium in Aqueous Solutions Using a Magnetic Silica-Coated Amino-Modified Glycidyl Methacrylate Polymer Nanocomposite",
number = "6",
pages = "2233",
volume = "16",
doi = "10.3390/ma16062233"
}
Suručić, L., Janjić, G., Marković, B., Tadić, T., Vuković, Z., Nastasović, A.,& Onjia, A.. (2023). Speciation of Hexavalent Chromium in Aqueous Solutions Using a Magnetic Silica-Coated Amino-Modified Glycidyl Methacrylate Polymer Nanocomposite. in Materials
MDPI., 16(6), 2233.
https://doi.org/10.3390/ma16062233
Suručić L, Janjić G, Marković B, Tadić T, Vuković Z, Nastasović A, Onjia A. Speciation of Hexavalent Chromium in Aqueous Solutions Using a Magnetic Silica-Coated Amino-Modified Glycidyl Methacrylate Polymer Nanocomposite. in Materials. 2023;16(6):2233.
doi:10.3390/ma16062233 .
Suručić, Ljiljana, Janjić, Goran, Marković, Bojana, Tadić, Tamara, Vuković, Zorica, Nastasović, Aleksandra, Onjia, Antonije, "Speciation of Hexavalent Chromium in Aqueous Solutions Using a Magnetic Silica-Coated Amino-Modified Glycidyl Methacrylate Polymer Nanocomposite" in Materials, 16, no. 6 (2023):2233,
https://doi.org/10.3390/ma16062233 . .
2
7
6

Preparation and Characterization of Novel Glycidyl Methacrylate/Clay Nanocomposites

Stefanović, Ivan S.; Marković, Bojana M.; Nastasović, Aleksandra B.; Vuković, Zorica M.; Dapčević, Aleksandra; Pavlović, Vladimir B.

(2022)

TY  - JOUR
AU  - Stefanović, Ivan S.
AU  - Marković, Bojana M.
AU  - Nastasović, Aleksandra B.
AU  - Vuković, Zorica M.
AU  - Dapčević, Aleksandra
AU  - Pavlović, Vladimir B.
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5174
AB  - The impact of the type and amounts of nanofiller on the features of the glycidyl methacrylate-co-ethylene glycol dimethacrylate (GMA-co-EGDMA)/organomodified montmorillonite (OMt) nanocomposites that were prepared by in situ radical suspension polymerization, was examined. Cloisite 30B and Cloisite 25A were used in this study as nanofillers, in amounts of 2 and 10 wt.%. The structure, morphology, thermal stability and porosity of the initial GMA-co-EGDMA copolymer and their nanocomposites were examined by ATR-FTIR analysis, wide angle X-ray diffraction (XRD), scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDS), transmission electron microscopy (TEM), thermogravimetric analysis (TG) and mercury porosimetry. It has been established that both clay nanofillers were successfully incorporated into the structure of the initial copolymer, simultaneously on their surface and also on cross-sectional area. Prepared samples with 2 wt.% have predominantly exfoliated, while samples with 10 wt.% have some tactoids-aggregates structure of the OMt layers. Thermogravimetric analysis revealed that after ~ 30 % of degradation, all nanocomposites become more thermal stable than the initial copolymer. The obtained results indicate that porosity parameters can be easily modified with the addition of clay nanofillers and thus prepared nanocomposites adjusted to specific purposes. © 2022 Authors. Published by association for ETRAN Society.
T2  - Science of Sintering
T2  - Science of Sintering
T1  - Preparation and Characterization of Novel Glycidyl Methacrylate/Clay Nanocomposites
EP  - 200
IS  - 2
SP  - 189
VL  - 54
DO  - 10.2298/SOS2202189S
ER  - 
@article{
author = "Stefanović, Ivan S. and Marković, Bojana M. and Nastasović, Aleksandra B. and Vuković, Zorica M. and Dapčević, Aleksandra and Pavlović, Vladimir B.",
year = "2022",
abstract = "The impact of the type and amounts of nanofiller on the features of the glycidyl methacrylate-co-ethylene glycol dimethacrylate (GMA-co-EGDMA)/organomodified montmorillonite (OMt) nanocomposites that were prepared by in situ radical suspension polymerization, was examined. Cloisite 30B and Cloisite 25A were used in this study as nanofillers, in amounts of 2 and 10 wt.%. The structure, morphology, thermal stability and porosity of the initial GMA-co-EGDMA copolymer and their nanocomposites were examined by ATR-FTIR analysis, wide angle X-ray diffraction (XRD), scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDS), transmission electron microscopy (TEM), thermogravimetric analysis (TG) and mercury porosimetry. It has been established that both clay nanofillers were successfully incorporated into the structure of the initial copolymer, simultaneously on their surface and also on cross-sectional area. Prepared samples with 2 wt.% have predominantly exfoliated, while samples with 10 wt.% have some tactoids-aggregates structure of the OMt layers. Thermogravimetric analysis revealed that after ~ 30 % of degradation, all nanocomposites become more thermal stable than the initial copolymer. The obtained results indicate that porosity parameters can be easily modified with the addition of clay nanofillers and thus prepared nanocomposites adjusted to specific purposes. © 2022 Authors. Published by association for ETRAN Society.",
journal = "Science of Sintering, Science of Sintering",
title = "Preparation and Characterization of Novel Glycidyl Methacrylate/Clay Nanocomposites",
pages = "200-189",
number = "2",
volume = "54",
doi = "10.2298/SOS2202189S"
}
Stefanović, I. S., Marković, B. M., Nastasović, A. B., Vuković, Z. M., Dapčević, A.,& Pavlović, V. B.. (2022). Preparation and Characterization of Novel Glycidyl Methacrylate/Clay Nanocomposites. in Science of Sintering, 54(2), 189-200.
https://doi.org/10.2298/SOS2202189S
Stefanović IS, Marković BM, Nastasović AB, Vuković ZM, Dapčević A, Pavlović VB. Preparation and Characterization of Novel Glycidyl Methacrylate/Clay Nanocomposites. in Science of Sintering. 2022;54(2):189-200.
doi:10.2298/SOS2202189S .
Stefanović, Ivan S., Marković, Bojana M., Nastasović, Aleksandra B., Vuković, Zorica M., Dapčević, Aleksandra, Pavlović, Vladimir B., "Preparation and Characterization of Novel Glycidyl Methacrylate/Clay Nanocomposites" in Science of Sintering, 54, no. 2 (2022):189-200,
https://doi.org/10.2298/SOS2202189S . .

Sorption of different phenol derivatives on a functionalized macroporous nanocomposite of poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate) and acid modified bentonite

Marinović, Sanja; Milutinović Nikolić, Aleksandra; Nastasović, Aleksandra; Žunić, Marija; Vuković, Zorica; Antonovic, Dusan G; Jovanović, Dušan M.

(Serbian Chemical Society, 2014)

TY  - JOUR
AU  - Marinović, Sanja
AU  - Milutinović Nikolić, Aleksandra
AU  - Nastasović, Aleksandra
AU  - Žunić, Marija
AU  - Vuković, Zorica
AU  - Antonovic, Dusan G
AU  - Jovanović, Dušan M.
PY  - 2014
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5796
AB  - Macroporous nanocomposite of poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate) and acid modified bentonite was prepared by radical suspension copolymerization. Nanocomposite was functionalized with diethylenetriamine (DETA), by ring-opening reaction of the pendant epoxy groups. Functionalization was performed in order to enable phenol derivatives sorption. This new, not sufficiently investigated material, with developed porous structure was denoted CP-S-A-DETA. In this study, the influence of temperature on 4-nitrophenol (4NP) sorption on CP-S-A-DETA was investigated. The chemisorption was estimated as dominant process since activation energy of sorption of 4NP of 54.8 kJ mol(-1) was obtained. After determining the optimal sorption conditions for 4NP, the sorption of 2-nitrophenol (2NP) and 2-chloro-4-nitrophenol (2Cl4NP) on CP-S-A-DETA was investigated with respect to pH, initial concentration and contact time. The 2NP sorption was seldom tested, while according to our knowledge, the 2Cl4NP sorption was not investigated. The isotherm data were best fitted with Langmuir model, while the sorption dynamics obeyed the pseudo-second-order kinetic model for all derivatives.
PB  - Serbian Chemical Society
T2  - Journal of the Serbian Chemical Society
T1  - Sorption of different phenol derivatives on a functionalized macroporous nanocomposite of poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate) and acid modified bentonite
EP  - 1261
IS  - 10
SP  - 1249
VL  - 79
DO  - 10.2298/JSC140206043M
ER  - 
@article{
author = "Marinović, Sanja and Milutinović Nikolić, Aleksandra and Nastasović, Aleksandra and Žunić, Marija and Vuković, Zorica and Antonovic, Dusan G and Jovanović, Dušan M.",
year = "2014",
abstract = "Macroporous nanocomposite of poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate) and acid modified bentonite was prepared by radical suspension copolymerization. Nanocomposite was functionalized with diethylenetriamine (DETA), by ring-opening reaction of the pendant epoxy groups. Functionalization was performed in order to enable phenol derivatives sorption. This new, not sufficiently investigated material, with developed porous structure was denoted CP-S-A-DETA. In this study, the influence of temperature on 4-nitrophenol (4NP) sorption on CP-S-A-DETA was investigated. The chemisorption was estimated as dominant process since activation energy of sorption of 4NP of 54.8 kJ mol(-1) was obtained. After determining the optimal sorption conditions for 4NP, the sorption of 2-nitrophenol (2NP) and 2-chloro-4-nitrophenol (2Cl4NP) on CP-S-A-DETA was investigated with respect to pH, initial concentration and contact time. The 2NP sorption was seldom tested, while according to our knowledge, the 2Cl4NP sorption was not investigated. The isotherm data were best fitted with Langmuir model, while the sorption dynamics obeyed the pseudo-second-order kinetic model for all derivatives.",
publisher = "Serbian Chemical Society",
journal = "Journal of the Serbian Chemical Society",
title = "Sorption of different phenol derivatives on a functionalized macroporous nanocomposite of poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate) and acid modified bentonite",
pages = "1261-1249",
number = "10",
volume = "79",
doi = "10.2298/JSC140206043M"
}
Marinović, S., Milutinović Nikolić, A., Nastasović, A., Žunić, M., Vuković, Z., Antonovic, D. G.,& Jovanović, D. M.. (2014). Sorption of different phenol derivatives on a functionalized macroporous nanocomposite of poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate) and acid modified bentonite. in Journal of the Serbian Chemical Society
Serbian Chemical Society., 79(10), 1249-1261.
https://doi.org/10.2298/JSC140206043M
Marinović S, Milutinović Nikolić A, Nastasović A, Žunić M, Vuković Z, Antonovic DG, Jovanović DM. Sorption of different phenol derivatives on a functionalized macroporous nanocomposite of poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate) and acid modified bentonite. in Journal of the Serbian Chemical Society. 2014;79(10):1249-1261.
doi:10.2298/JSC140206043M .
Marinović, Sanja, Milutinović Nikolić, Aleksandra, Nastasović, Aleksandra, Žunić, Marija, Vuković, Zorica, Antonovic, Dusan G, Jovanović, Dušan M., "Sorption of different phenol derivatives on a functionalized macroporous nanocomposite of poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate) and acid modified bentonite" in Journal of the Serbian Chemical Society, 79, no. 10 (2014):1249-1261,
https://doi.org/10.2298/JSC140206043M . .
3
2
2