TY  - JOUR
AU  - Budimirović, Dragoslav
AU  - Veličković, Zlate
AU  - Bajić, Zoran
AU  - Milošević, Dragana
AU  - Nikolić, Jasmina
AU  - Drmanić, Saša
AU  - Marinković, Aleksandar
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3679
AB  - The multistage synthesis of the multi-wall carbon nanotubes (MWCNT) modified with polyamidoamine dendrimers, A1/and A2/MWCNT, capable of cation removal, is presented in this work, as well as novel adsorbents based on these precursor materials and modified with goethite nano-deposit, alpha-FeOOH, A1/ and A2/MWCNT-alpha-FeO(OH) adsorbents used for As(V) removal. In a batch test, the influence of pH, contact time, initial ion concentration and temperature on adsorption efficiency were studied. Adsorption data modelling by the Langmuir isotherm, revealed good adsorption capacities (in mg g(-1)) of 18.8 for As(V) and 60.1 and 44.2 for Pb2+ and Cd2+ on A2/MWCNT, respectively. Also, 27.6 and 29.8 mg g(-1) of As(V) on A1/ and A2/MWCNT-alpha-FeO(OH), respectively, were removed. Thermodynamic parameters showed that the adsorption is spontaneous and endothermic processes. Results of the study of influences of competitive ions: bicarbonate, sulfate, phosphate, silicate, chromate, fluoride and natural organic matter (NOM), i.e., humic acid (HA), showed the highest effect of phosphate on the decrease of arsenate adsorption. Time-dependent adsorption was best described by pseudo-second-order kinetic model and Weber-Morris model which predicted intra-particle diffusion as a rate-controlling step. Also, activation energy (E-a/kJ mol(-1)): 8.85 for Cd2+, 9.25 for Pb2+ and 7.98 for As(V), were obtained from kinetic data.
PB  - Srpsko hemijsko društvo, Beograd
T2  - Journal of the Serbian Chemical Society
T1  - Removal of heavy metals from water using multistage functionalized multiwall carbon nanotubes
EP  - 1191
IS  - 10
SP  - 1175
VL  - 82
DO  - 10.2298/JSC170422066B
ER  - 

@article{
author = "Budimirović, Dragoslav and Veličković, Zlate and Bajić, Zoran and Milošević, Dragana and Nikolić, Jasmina and Drmanić, Saša and Marinković, Aleksandar",
year = "2017",
abstract = "The multistage synthesis of the multi-wall carbon nanotubes (MWCNT) modified with polyamidoamine dendrimers, A1/and A2/MWCNT, capable of cation removal, is presented in this work, as well as novel adsorbents based on these precursor materials and modified with goethite nano-deposit, alpha-FeOOH, A1/ and A2/MWCNT-alpha-FeO(OH) adsorbents used for As(V) removal. In a batch test, the influence of pH, contact time, initial ion concentration and temperature on adsorption efficiency were studied. Adsorption data modelling by the Langmuir isotherm, revealed good adsorption capacities (in mg g(-1)) of 18.8 for As(V) and 60.1 and 44.2 for Pb2+ and Cd2+ on A2/MWCNT, respectively. Also, 27.6 and 29.8 mg g(-1) of As(V) on A1/ and A2/MWCNT-alpha-FeO(OH), respectively, were removed. Thermodynamic parameters showed that the adsorption is spontaneous and endothermic processes. Results of the study of influences of competitive ions: bicarbonate, sulfate, phosphate, silicate, chromate, fluoride and natural organic matter (NOM), i.e., humic acid (HA), showed the highest effect of phosphate on the decrease of arsenate adsorption. Time-dependent adsorption was best described by pseudo-second-order kinetic model and Weber-Morris model which predicted intra-particle diffusion as a rate-controlling step. Also, activation energy (E-a/kJ mol(-1)): 8.85 for Cd2+, 9.25 for Pb2+ and 7.98 for As(V), were obtained from kinetic data.",
publisher = "Srpsko hemijsko društvo, Beograd",
journal = "Journal of the Serbian Chemical Society",
title = "Removal of heavy metals from water using multistage functionalized multiwall carbon nanotubes",
pages = "1191-1175",
number = "10",
volume = "82",
doi = "10.2298/JSC170422066B"
}

Budimirović, D., Veličković, Z., Bajić, Z., Milošević, D., Nikolić, J., Drmanić, S.,& Marinković, A.. (2017). Removal of heavy metals from water using multistage functionalized multiwall carbon nanotubes. in Journal of the Serbian Chemical Society
Srpsko hemijsko društvo, Beograd., 82(10), 1175-1191.
https://doi.org/10.2298/JSC170422066B

Budimirović D, Veličković Z, Bajić Z, Milošević D, Nikolić J, Drmanić S, Marinković A. Removal of heavy metals from water using multistage functionalized multiwall carbon nanotubes. in Journal of the Serbian Chemical Society. 2017;82(10):1175-1191.
doi:10.2298/JSC170422066B .

Budimirović, Dragoslav, Veličković, Zlate, Bajić, Zoran, Milošević, Dragana, Nikolić, Jasmina, Drmanić, Saša, Marinković, Aleksandar, "Removal of heavy metals from water using multistage functionalized multiwall carbon nanotubes" in Journal of the Serbian Chemical Society, 82, no. 10 (2017):1175-1191,
https://doi.org/10.2298/JSC170422066B . .

TY  - JOUR
AU  - Budimirović, Dragoslav
AU  - Veličković, Zlate
AU  - Đokić, Veljko
AU  - Milosavljević, Milutin
AU  - Markovski, Jasmina
AU  - Lević, Steva
AU  - Marinković, Aleksandar
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3744
AB  - A novel adsorbents, 6-arm amino polyethylene glycol functionalized multiwall carbon nanotubes (PEG/MWCNT) loaded with alpha-FeOOH (Fe/PEG/MWCNT), and hybrid alpha-FeOOH/alpha-MnO2 nano-deposit (Fe-Mn/PEG/MWCNT) were used for As(V) removal. In a batch test, the influence of pH, contact time, initial ion concentration and temperature on adsorption efficiency was studied. Time-dependent adsorption was best described by pseudo-second-order kinetic model and Weber-Morris model which predicted intra-particle diffusion as a rate controlling step of overall process. Competitive kinetic study in the presence of interfering ions shows low detrimental effect on both capacity and kinetic of As(V) removal. Thermodynamic parameters showed that the adsorption was spontaneous and endothermic processes. Influences of the pH, iron oxide loading and interfering ions were modeled by using Visual MINTEQ software. High adsorption capacities: 49.39 and 59.78 mg g(-1) were obtained for Fe/- and Fe-Mn/PEG/MWCNT, respectively, and multi-cycle reusability indicated high applicability of obtained material. Two step removal process, in a batch study, was successfully performed by using PEG/MWCNT for cations removal in the first step, and Fe or Fe-Mn/PEG/MWCNT for As(V) removal in the second.
PB  - Inst Chemical Engineers, Rugby
T2  - Chemical Engineering Research & Design
T1  - Efficient As(V) removal by alpha-FeOOH and alpha-FeOOH/alpha-MnO2 embedded PEG-6-arm functionalized multiwall carbon nanotubes
EP  - 86
SP  - 75
VL  - 119
DO  - 10.1016/j.cherd.2017.01.010
ER  - 

@article{
author = "Budimirović, Dragoslav and Veličković, Zlate and Đokić, Veljko and Milosavljević, Milutin and Markovski, Jasmina and Lević, Steva and Marinković, Aleksandar",
year = "2017",
abstract = "A novel adsorbents, 6-arm amino polyethylene glycol functionalized multiwall carbon nanotubes (PEG/MWCNT) loaded with alpha-FeOOH (Fe/PEG/MWCNT), and hybrid alpha-FeOOH/alpha-MnO2 nano-deposit (Fe-Mn/PEG/MWCNT) were used for As(V) removal. In a batch test, the influence of pH, contact time, initial ion concentration and temperature on adsorption efficiency was studied. Time-dependent adsorption was best described by pseudo-second-order kinetic model and Weber-Morris model which predicted intra-particle diffusion as a rate controlling step of overall process. Competitive kinetic study in the presence of interfering ions shows low detrimental effect on both capacity and kinetic of As(V) removal. Thermodynamic parameters showed that the adsorption was spontaneous and endothermic processes. Influences of the pH, iron oxide loading and interfering ions were modeled by using Visual MINTEQ software. High adsorption capacities: 49.39 and 59.78 mg g(-1) were obtained for Fe/- and Fe-Mn/PEG/MWCNT, respectively, and multi-cycle reusability indicated high applicability of obtained material. Two step removal process, in a batch study, was successfully performed by using PEG/MWCNT for cations removal in the first step, and Fe or Fe-Mn/PEG/MWCNT for As(V) removal in the second.",
publisher = "Inst Chemical Engineers, Rugby",
journal = "Chemical Engineering Research & Design",
title = "Efficient As(V) removal by alpha-FeOOH and alpha-FeOOH/alpha-MnO2 embedded PEG-6-arm functionalized multiwall carbon nanotubes",
pages = "86-75",
volume = "119",
doi = "10.1016/j.cherd.2017.01.010"
}

Budimirović, D., Veličković, Z., Đokić, V., Milosavljević, M., Markovski, J., Lević, S.,& Marinković, A.. (2017). Efficient As(V) removal by alpha-FeOOH and alpha-FeOOH/alpha-MnO2 embedded PEG-6-arm functionalized multiwall carbon nanotubes. in Chemical Engineering Research & Design
Inst Chemical Engineers, Rugby., 119, 75-86.
https://doi.org/10.1016/j.cherd.2017.01.010

Budimirović D, Veličković Z, Đokić V, Milosavljević M, Markovski J, Lević S, Marinković A. Efficient As(V) removal by alpha-FeOOH and alpha-FeOOH/alpha-MnO2 embedded PEG-6-arm functionalized multiwall carbon nanotubes. in Chemical Engineering Research & Design. 2017;119:75-86.
doi:10.1016/j.cherd.2017.01.010 .

Budimirović, Dragoslav, Veličković, Zlate, Đokić, Veljko, Milosavljević, Milutin, Markovski, Jasmina, Lević, Steva, Marinković, Aleksandar, "Efficient As(V) removal by alpha-FeOOH and alpha-FeOOH/alpha-MnO2 embedded PEG-6-arm functionalized multiwall carbon nanotubes" in Chemical Engineering Research & Design, 119 (2017):75-86,
https://doi.org/10.1016/j.cherd.2017.01.010 . .

TY  - JOUR
AU  - Bajić, Zoran J.
AU  - Veličković, Zlate
AU  - Đokić, Veljko
AU  - Perić-Grujić, Aleksandra
AU  - Ersen, Ovidiu
AU  - Uskoković, Petar
AU  - Marinković, Aleksandar
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3313
AB  - Performance of a novel adsorbent, copper impregnated natural mineral tufa (T-Cu), applicable for efficient arsenic removal is presented in this study. Testing of adsorbent properties encompassed material characterization and equilibrium study in a batch system. Copper modification contributed to increased adsorption capacities, that is, from 4.65 to 67.83 mg g (1) for As(III), and from 6.84 to 104.62 mg g (1) for As(V), comparing to unmodified tufa. The obtained thermodynamic data indicated higher feasibility and spontaneity of the adsorption process at higher temperature. A competitive study in a multi-component system showed that T-Cu adsorbents effectively removed arsenic species at high concentrations of interfering ions. The high adsorption capacity and multi-cycle reusability gave positive techno-economic indicators in comparison to commercial adsorbents.
PB  - Wiley, Hoboken
T2  - Clean-Soil Air Water
T1  - Adsorption Study of Arsenic Removal by Novel Hybrid Copper Impregnated Tufa Adsorbents in a Batch System
EP  - 1488
IS  - 11
SP  - 1477
VL  - 44
DO  - 10.1002/clen.201500765
ER  - 

@article{
author = "Bajić, Zoran J. and Veličković, Zlate and Đokić, Veljko and Perić-Grujić, Aleksandra and Ersen, Ovidiu and Uskoković, Petar and Marinković, Aleksandar",
year = "2016",
abstract = "Performance of a novel adsorbent, copper impregnated natural mineral tufa (T-Cu), applicable for efficient arsenic removal is presented in this study. Testing of adsorbent properties encompassed material characterization and equilibrium study in a batch system. Copper modification contributed to increased adsorption capacities, that is, from 4.65 to 67.83 mg g (1) for As(III), and from 6.84 to 104.62 mg g (1) for As(V), comparing to unmodified tufa. The obtained thermodynamic data indicated higher feasibility and spontaneity of the adsorption process at higher temperature. A competitive study in a multi-component system showed that T-Cu adsorbents effectively removed arsenic species at high concentrations of interfering ions. The high adsorption capacity and multi-cycle reusability gave positive techno-economic indicators in comparison to commercial adsorbents.",
publisher = "Wiley, Hoboken",
journal = "Clean-Soil Air Water",
title = "Adsorption Study of Arsenic Removal by Novel Hybrid Copper Impregnated Tufa Adsorbents in a Batch System",
pages = "1488-1477",
number = "11",
volume = "44",
doi = "10.1002/clen.201500765"
}

Bajić, Z. J., Veličković, Z., Đokić, V., Perić-Grujić, A., Ersen, O., Uskoković, P.,& Marinković, A.. (2016). Adsorption Study of Arsenic Removal by Novel Hybrid Copper Impregnated Tufa Adsorbents in a Batch System. in Clean-Soil Air Water
Wiley, Hoboken., 44(11), 1477-1488.
https://doi.org/10.1002/clen.201500765

Bajić ZJ, Veličković Z, Đokić V, Perić-Grujić A, Ersen O, Uskoković P, Marinković A. Adsorption Study of Arsenic Removal by Novel Hybrid Copper Impregnated Tufa Adsorbents in a Batch System. in Clean-Soil Air Water. 2016;44(11):1477-1488.
doi:10.1002/clen.201500765 .

Bajić, Zoran J., Veličković, Zlate, Đokić, Veljko, Perić-Grujić, Aleksandra, Ersen, Ovidiu, Uskoković, Petar, Marinković, Aleksandar, "Adsorption Study of Arsenic Removal by Novel Hybrid Copper Impregnated Tufa Adsorbents in a Batch System" in Clean-Soil Air Water, 44, no. 11 (2016):1477-1488,
https://doi.org/10.1002/clen.201500765 . .