Efficient As(V) removal by alpha-FeOOH and alpha-FeOOH/alpha-MnO2 embedded PEG-6-arm functionalized multiwall carbon nanotubes
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2017
Authors
Budimirović, DragoslavVeličković, Zlate
Đokić, Veljko
Milosavljević, Milutin
Markovski, Jasmina
Lević, Steva
Marinković, Aleksandar
Article (Published version)
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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/MWCN...T, 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.
Keywords:
Arsenic / Adsorption / Nanocomposites / MWCNT / alpha-FeOOH / alpha-MnO2Source:
Chemical Engineering Research & Design, 2017, 119, 75-86Publisher:
- Inst Chemical Engineers, Rugby
Funding / projects:
- Synthesis, processing and applications of nanostructured multifunctional materials with defined properties (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45019)
- University of Defense [VA-TT/4-16-18]
DOI: 10.1016/j.cherd.2017.01.010
ISSN: 0263-8762
WoS: 000396958900008
Scopus: 2-s2.0-85010382715
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Institution/Community
Tehnološko-metalurški fakultetTY - 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 . .
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