TY  - JOUR
AU  - Gržetić, Jelena D.
AU  - Mijatov, Slavko
AU  - Fidanovski, Bojana
AU  - Kovačević, Tihomir
AU  - Pavlović, Vladimir B.
AU  - Brzić, Saša
AU  - Bajić, Danica
PY  - 2023
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/6479
AB  - Thermal decomposition of ammonium perchlorate (AP), as a high energy oxidizer in composite solid rocket propellants (CSRP), greatly affects the burning rate of the propellant. This paper summarizes the results of a study of the synergistic catalytic activity of nano-CuO/Fe2O3 nanoparticles on thermal decomposition of AP. AP micro-particles are efficiently encapsulated with 1 and 5 wt.% of nano-CuO and/or nano-Fe2O3 nanoparticles by the fast-crash solvent-antisolvent technique. The efficiency of the encapsulation method was confirmed using FT-IR spectroscopy. Morphological characterization, performed using SEM-EDS microscopy, showed that encapsulation provides recrystallization and deagglomeration of AP and uniform nano-catalyst distribution. The catalytic efficiency of nano-CuO/ nano-Fe2O3 nanoparticles on the thermal decomposition of AP was investigated using DSC, and an increase in released heat was observed from 1453 to 1628 J/g. The catalytic activities of performed nano-catalysts were proven by decreasing the HTD and merging with the low decomposition temperature peak. The highest catalytic effect was obtained after encapsulating with 5 wt.% of nano-CuO and nano-Fe2O3 combined in a 50/50 mass ratio due to multiple mechanisms of catalytic activity of nano-Fe2O3. The effect of AP encapsulation with nano-Fe2O3 on the burning rate of CSRP was investigated and the obtained results showed a favorable effect on the combustion rate law. © 2023 Łukasiewicz Research Network – Institute of Industrial Organic Chemistry, Poland
T2  - Central European Journal of Energetic Materials
T2  - Central European Journal of Energetic Materials
T1  - Thermal Decomposition of Ammonium Perchlorate Encapsulated with Copper(II)/Iron(III) Oxide Nanoparticles
EP  - 137
IS  - 2
SP  - 114
VL  - 20
DO  - 10.22211/cejem/168343
ER  - 

@article{
author = "Gržetić, Jelena D. and Mijatov, Slavko and Fidanovski, Bojana and Kovačević, Tihomir and Pavlović, Vladimir B. and Brzić, Saša and Bajić, Danica",
year = "2023",
abstract = "Thermal decomposition of ammonium perchlorate (AP), as a high energy oxidizer in composite solid rocket propellants (CSRP), greatly affects the burning rate of the propellant. This paper summarizes the results of a study of the synergistic catalytic activity of nano-CuO/Fe2O3 nanoparticles on thermal decomposition of AP. AP micro-particles are efficiently encapsulated with 1 and 5 wt.% of nano-CuO and/or nano-Fe2O3 nanoparticles by the fast-crash solvent-antisolvent technique. The efficiency of the encapsulation method was confirmed using FT-IR spectroscopy. Morphological characterization, performed using SEM-EDS microscopy, showed that encapsulation provides recrystallization and deagglomeration of AP and uniform nano-catalyst distribution. The catalytic efficiency of nano-CuO/ nano-Fe2O3 nanoparticles on the thermal decomposition of AP was investigated using DSC, and an increase in released heat was observed from 1453 to 1628 J/g. The catalytic activities of performed nano-catalysts were proven by decreasing the HTD and merging with the low decomposition temperature peak. The highest catalytic effect was obtained after encapsulating with 5 wt.% of nano-CuO and nano-Fe2O3 combined in a 50/50 mass ratio due to multiple mechanisms of catalytic activity of nano-Fe2O3. The effect of AP encapsulation with nano-Fe2O3 on the burning rate of CSRP was investigated and the obtained results showed a favorable effect on the combustion rate law. © 2023 Łukasiewicz Research Network – Institute of Industrial Organic Chemistry, Poland",
journal = "Central European Journal of Energetic Materials, Central European Journal of Energetic Materials",
title = "Thermal Decomposition of Ammonium Perchlorate Encapsulated with Copper(II)/Iron(III) Oxide Nanoparticles",
pages = "137-114",
number = "2",
volume = "20",
doi = "10.22211/cejem/168343"
}

Gržetić, J. D., Mijatov, S., Fidanovski, B., Kovačević, T., Pavlović, V. B., Brzić, S.,& Bajić, D.. (2023). Thermal Decomposition of Ammonium Perchlorate Encapsulated with Copper(II)/Iron(III) Oxide Nanoparticles. in Central European Journal of Energetic Materials, 20(2), 114-137.
https://doi.org/10.22211/cejem/168343

Gržetić JD, Mijatov S, Fidanovski B, Kovačević T, Pavlović VB, Brzić S, Bajić D. Thermal Decomposition of Ammonium Perchlorate Encapsulated with Copper(II)/Iron(III) Oxide Nanoparticles. in Central European Journal of Energetic Materials. 2023;20(2):114-137.
doi:10.22211/cejem/168343 .

Gržetić, Jelena D., Mijatov, Slavko, Fidanovski, Bojana, Kovačević, Tihomir, Pavlović, Vladimir B., Brzić, Saša, Bajić, Danica, "Thermal Decomposition of Ammonium Perchlorate Encapsulated with Copper(II)/Iron(III) Oxide Nanoparticles" in Central European Journal of Energetic Materials, 20, no. 2 (2023):114-137,
https://doi.org/10.22211/cejem/168343 . .

TY  - JOUR
AU  - Popović, Ana L.
AU  - Velicković, Zlate
AU  - Radovanović, Željko
AU  - Đolić, Maja
AU  - Pavlović, Vladimir
AU  - Marinković, Aleksandar D.
AU  - Gržetić, Jelena D.
PY  - 2022
UR  - https://www.sciencedirect.com/science/article/pii/S221334372200882X
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/6113
AB  - Highly effective lignin-based microspheres were prepared by inverse copolymerization of lignin (kraft) from suspension, with poly(ethylene imine) and amino-functionalized magnetite nanoparticles (A-LMS_Fe3O4) or manganese(IV)oxide nanoparticles (A-LMS_MnO2). The XRD, FTIR, SEM, BET, TEM techniques, including the porosity determination, were performed to analyze morphological and structural properties of synthesized microspheres. The effect of pH, the adsorbent dosage, temperature and contact duration on a batch-mode adsorption efficiency of arsenate and chromate (oxy)anions removal was tested. Spontaneous adsorption was found to be feasible, reaching the adsorption capacities of Cr(VI) (62.9 mg g−1), As(V) (47.8 mg g−1) by A-LMS_Fe3O4, and of Cr(VI) (73.9 mg g−1), As(V) (62.5 mg g−1) using A-LMS_MnO2 adsorbent. Fast removal rates were confirmed via kinetic study, using pseudo-second order, the Weber-Morris and the single resistance mass-transfer model, with a limiting step of the diffusion transport through pores. The correlation of fixed-bed-column results with Bohart–Adams, Thomas, Yoon–Nelson and Dose Response models displayed that breakthrough behavior was influenced by flow rate and the inlet concentration. Significant potential of produced bio-adsorbent is further confirmed by the pore surface diffusion modeling, desorption study and adsorption from multi-component system using artificial water.
T2  - Journal of Environmental Chemical Engineering
T2  - Journal of Environmental Chemical EngineeringJournal of Environmental Chemical Engineering
T1  - Hybrid amino-terminated lignin microspheres loaded with magnetite and manganese oxide nanoparticles: An effective hazardous oxyanions adsorbent
IS  - 3
SP  - 108009
VL  - 10
DO  - 10.1016/j.jece.2022.108009
ER  - 

@article{
author = "Popović, Ana L. and Velicković, Zlate and Radovanović, Željko and Đolić, Maja and Pavlović, Vladimir and Marinković, Aleksandar D. and Gržetić, Jelena D.",
year = "2022",
abstract = "Highly effective lignin-based microspheres were prepared by inverse copolymerization of lignin (kraft) from suspension, with poly(ethylene imine) and amino-functionalized magnetite nanoparticles (A-LMS_Fe3O4) or manganese(IV)oxide nanoparticles (A-LMS_MnO2). The XRD, FTIR, SEM, BET, TEM techniques, including the porosity determination, were performed to analyze morphological and structural properties of synthesized microspheres. The effect of pH, the adsorbent dosage, temperature and contact duration on a batch-mode adsorption efficiency of arsenate and chromate (oxy)anions removal was tested. Spontaneous adsorption was found to be feasible, reaching the adsorption capacities of Cr(VI) (62.9 mg g−1), As(V) (47.8 mg g−1) by A-LMS_Fe3O4, and of Cr(VI) (73.9 mg g−1), As(V) (62.5 mg g−1) using A-LMS_MnO2 adsorbent. Fast removal rates were confirmed via kinetic study, using pseudo-second order, the Weber-Morris and the single resistance mass-transfer model, with a limiting step of the diffusion transport through pores. The correlation of fixed-bed-column results with Bohart–Adams, Thomas, Yoon–Nelson and Dose Response models displayed that breakthrough behavior was influenced by flow rate and the inlet concentration. Significant potential of produced bio-adsorbent is further confirmed by the pore surface diffusion modeling, desorption study and adsorption from multi-component system using artificial water.",
journal = "Journal of Environmental Chemical Engineering, Journal of Environmental Chemical EngineeringJournal of Environmental Chemical Engineering",
title = "Hybrid amino-terminated lignin microspheres loaded with magnetite and manganese oxide nanoparticles: An effective hazardous oxyanions adsorbent",
number = "3",
pages = "108009",
volume = "10",
doi = "10.1016/j.jece.2022.108009"
}

Popović, A. L., Velicković, Z., Radovanović, Ž., Đolić, M., Pavlović, V., Marinković, A. D.,& Gržetić, J. D.. (2022). Hybrid amino-terminated lignin microspheres loaded with magnetite and manganese oxide nanoparticles: An effective hazardous oxyanions adsorbent. in Journal of Environmental Chemical Engineering, 10(3), 108009.
https://doi.org/10.1016/j.jece.2022.108009

Popović AL, Velicković Z, Radovanović Ž, Đolić M, Pavlović V, Marinković AD, Gržetić JD. Hybrid amino-terminated lignin microspheres loaded with magnetite and manganese oxide nanoparticles: An effective hazardous oxyanions adsorbent. in Journal of Environmental Chemical Engineering. 2022;10(3):108009.
doi:10.1016/j.jece.2022.108009 .

Popović, Ana L., Velicković, Zlate, Radovanović, Željko, Đolić, Maja, Pavlović, Vladimir, Marinković, Aleksandar D., Gržetić, Jelena D., "Hybrid amino-terminated lignin microspheres loaded with magnetite and manganese oxide nanoparticles: An effective hazardous oxyanions adsorbent" in Journal of Environmental Chemical Engineering, 10, no. 3 (2022):108009,
https://doi.org/10.1016/j.jece.2022.108009 . .

TY  - JOUR
AU  - Obradović, Nina
AU  - Rusmirović, Jelena D.
AU  - Filipović, Suzana
AU  - Kosanović, Darko
AU  - Marinković, Aleksandar
AU  - Radić, Danka
AU  - Pavlović, Vladimir
PY  - 2020
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/5248
AB  - Industrial/technological growth is directly connected with environmental pollution, but its influence can be minimized through pollution abatement approaches such as the treatment of industrial wastewater. In this study, novel porous amine-functionalized silicate minerals, specifically, cordierite was investigated for the removal of toxic heavy metals from industrial wastewaters. Cordierite supports were synthesized by mixing MgO, Al2O3, and SiO2 powders in 2:2:5 molar ratios, and mechanically activated via ball milling in ethanol for 10, 40, or 80 min. Pellets were sintered by heating in air at 20 degrees C min(-1) to 1,350 degrees C, for 2 h. Porous supports were produced by coarsely crushing the sintered pellets and mixing the crushed and sieved cordierite powder with 20 wt.% of a pore-forming agent, either nanocellulose or yeast. The resulting pellets were sintered by heating at 5 degrees C min(-1) to 700 degrees C in air. The synthetic cordierite support was modified by treatment in poly-ethylenimine. Activated supports were then tested for the removal of Ni2+ and Cd2+ ions. The phase composition of the cordierite supports was analyzed by the X-ray diffraction, Fourier-transform infrared spectroscopy, and scanning electron microscopy. Analysis of adsorption isotherms, kinetics, and thermodynamic parameters indicated that adsorption was a spontaneous, endothermic process with a maximum adsorption capacity of 36 mg g(-1) for Cd2+ and 43 mg g(-1) for Ni2+. This work has shed light on the mechanism of heavy metal removal from the aquatic medium using the novel hybrid functionalized cordierite-based ceramic.
PB  - Desalination Publ, Hopkinton
T2  - Desalination and Water Treatment
T1  - Porous cordierite-supported polyethyleneimine composites for nickel(II) and cadmium(II) ions removal
EP  - 296
SP  - 283
VL  - 192
DO  - 10.5004/dwt.2020.25736
ER  - 

@article{
author = "Obradović, Nina and Rusmirović, Jelena D. and Filipović, Suzana and Kosanović, Darko and Marinković, Aleksandar and Radić, Danka and Pavlović, Vladimir",
year = "2020",
abstract = "Industrial/technological growth is directly connected with environmental pollution, but its influence can be minimized through pollution abatement approaches such as the treatment of industrial wastewater. In this study, novel porous amine-functionalized silicate minerals, specifically, cordierite was investigated for the removal of toxic heavy metals from industrial wastewaters. Cordierite supports were synthesized by mixing MgO, Al2O3, and SiO2 powders in 2:2:5 molar ratios, and mechanically activated via ball milling in ethanol for 10, 40, or 80 min. Pellets were sintered by heating in air at 20 degrees C min(-1) to 1,350 degrees C, for 2 h. Porous supports were produced by coarsely crushing the sintered pellets and mixing the crushed and sieved cordierite powder with 20 wt.% of a pore-forming agent, either nanocellulose or yeast. The resulting pellets were sintered by heating at 5 degrees C min(-1) to 700 degrees C in air. The synthetic cordierite support was modified by treatment in poly-ethylenimine. Activated supports were then tested for the removal of Ni2+ and Cd2+ ions. The phase composition of the cordierite supports was analyzed by the X-ray diffraction, Fourier-transform infrared spectroscopy, and scanning electron microscopy. Analysis of adsorption isotherms, kinetics, and thermodynamic parameters indicated that adsorption was a spontaneous, endothermic process with a maximum adsorption capacity of 36 mg g(-1) for Cd2+ and 43 mg g(-1) for Ni2+. This work has shed light on the mechanism of heavy metal removal from the aquatic medium using the novel hybrid functionalized cordierite-based ceramic.",
publisher = "Desalination Publ, Hopkinton",
journal = "Desalination and Water Treatment",
title = "Porous cordierite-supported polyethyleneimine composites for nickel(II) and cadmium(II) ions removal",
pages = "296-283",
volume = "192",
doi = "10.5004/dwt.2020.25736"
}

Obradović, N., Rusmirović, J. D., Filipović, S., Kosanović, D., Marinković, A., Radić, D.,& Pavlović, V.. (2020). Porous cordierite-supported polyethyleneimine composites for nickel(II) and cadmium(II) ions removal. in Desalination and Water Treatment
Desalination Publ, Hopkinton., 192, 283-296.
https://doi.org/10.5004/dwt.2020.25736

Obradović N, Rusmirović JD, Filipović S, Kosanović D, Marinković A, Radić D, Pavlović V. Porous cordierite-supported polyethyleneimine composites for nickel(II) and cadmium(II) ions removal. in Desalination and Water Treatment. 2020;192:283-296.
doi:10.5004/dwt.2020.25736 .

Obradović, Nina, Rusmirović, Jelena D., Filipović, Suzana, Kosanović, Darko, Marinković, Aleksandar, Radić, Danka, Pavlović, Vladimir, "Porous cordierite-supported polyethyleneimine composites for nickel(II) and cadmium(II) ions removal" in Desalination and Water Treatment, 192 (2020):283-296,
https://doi.org/10.5004/dwt.2020.25736 . .