Modification of multi-wall carbon nanotubes for the removal of cadmium, lead and arsenic from wastewater
2013
Authors
Veličković, ZlateBajić, Zoran J.
Ristić, Mirjana
Đokić, Veljko
Marinković, Aleksandar
Uskoković, Petar
Vuruna, Mladen
Article (Published version)
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Multi-wall carbon nanotubes (MWCNTs) was functionalized with 6-arm amino polyethylene glycol (PEG), and synthesized PEG-MWCNTs was used as adsorbent in order to study adsorption characteristics with respect to Cd(II), Pb(II) and As(V) ions. In batch tests, the influence of contact time, initial metal ion concentration and temperature on the ion adsorption on PEG-MWCNTs was studied. Adsorption of Cd(II), Pb(II) and As(V) on PEG-MWCNTs strongly depends on pH. Time dependent adsorption can be described by intra-particular Weber-Morris kinetic model, and adsorption process was modelled by Koble-Corrigan isotherm, respectively. The maximum adsorption capacities of Cd(II), Pb(II) and As(V) on PEG-MWCNTs, for initial concentration of 10 mg dm(-3) and at pH=4, were 77.6, 47.5 and 13 mg g(-1) at 25 degrees C, respectively. The competitive adsorption studies showed that the adsorption affinity of ions towards PEG-MWCNTs showed largest adsorption of Cd(II) at pH 8, following by Pb(II) at pH 6, an...d As(V) at pH 4. Thermodynamic parameters showed that the adsorption of Cd(II), Pb(II) and As(V) ions was spontaneous and endothermic.
Keywords:
Cadmium / Lead / Arsenic / Adsorption / Carbon nanotubes / PEG-functionalizationSource:
Digest Journal of Nanomaterials and Biostructures, 2013, 8, 2, 501-511Publisher:
- Inst Materials Physics, Bucharest
Funding / projects:
- Study of the Synthesis, Structure and Activity of Natural and Synthetic Organic Compounds (RS-MESTD-Basic Research (BR or ON)-172013)
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Tehnološko-metalurški fakultetTY - JOUR AU - Veličković, Zlate AU - Bajić, Zoran J. AU - Ristić, Mirjana AU - Đokić, Veljko AU - Marinković, Aleksandar AU - Uskoković, Petar AU - Vuruna, Mladen PY - 2013 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2411 AB - Multi-wall carbon nanotubes (MWCNTs) was functionalized with 6-arm amino polyethylene glycol (PEG), and synthesized PEG-MWCNTs was used as adsorbent in order to study adsorption characteristics with respect to Cd(II), Pb(II) and As(V) ions. In batch tests, the influence of contact time, initial metal ion concentration and temperature on the ion adsorption on PEG-MWCNTs was studied. Adsorption of Cd(II), Pb(II) and As(V) on PEG-MWCNTs strongly depends on pH. Time dependent adsorption can be described by intra-particular Weber-Morris kinetic model, and adsorption process was modelled by Koble-Corrigan isotherm, respectively. The maximum adsorption capacities of Cd(II), Pb(II) and As(V) on PEG-MWCNTs, for initial concentration of 10 mg dm(-3) and at pH=4, were 77.6, 47.5 and 13 mg g(-1) at 25 degrees C, respectively. The competitive adsorption studies showed that the adsorption affinity of ions towards PEG-MWCNTs showed largest adsorption of Cd(II) at pH 8, following by Pb(II) at pH 6, and As(V) at pH 4. Thermodynamic parameters showed that the adsorption of Cd(II), Pb(II) and As(V) ions was spontaneous and endothermic. PB - Inst Materials Physics, Bucharest T2 - Digest Journal of Nanomaterials and Biostructures T1 - Modification of multi-wall carbon nanotubes for the removal of cadmium, lead and arsenic from wastewater EP - 511 IS - 2 SP - 501 VL - 8 UR - https://hdl.handle.net/21.15107/rcub_technorep_2411 ER -
@article{ author = "Veličković, Zlate and Bajić, Zoran J. and Ristić, Mirjana and Đokić, Veljko and Marinković, Aleksandar and Uskoković, Petar and Vuruna, Mladen", year = "2013", abstract = "Multi-wall carbon nanotubes (MWCNTs) was functionalized with 6-arm amino polyethylene glycol (PEG), and synthesized PEG-MWCNTs was used as adsorbent in order to study adsorption characteristics with respect to Cd(II), Pb(II) and As(V) ions. In batch tests, the influence of contact time, initial metal ion concentration and temperature on the ion adsorption on PEG-MWCNTs was studied. Adsorption of Cd(II), Pb(II) and As(V) on PEG-MWCNTs strongly depends on pH. Time dependent adsorption can be described by intra-particular Weber-Morris kinetic model, and adsorption process was modelled by Koble-Corrigan isotherm, respectively. The maximum adsorption capacities of Cd(II), Pb(II) and As(V) on PEG-MWCNTs, for initial concentration of 10 mg dm(-3) and at pH=4, were 77.6, 47.5 and 13 mg g(-1) at 25 degrees C, respectively. The competitive adsorption studies showed that the adsorption affinity of ions towards PEG-MWCNTs showed largest adsorption of Cd(II) at pH 8, following by Pb(II) at pH 6, and As(V) at pH 4. Thermodynamic parameters showed that the adsorption of Cd(II), Pb(II) and As(V) ions was spontaneous and endothermic.", publisher = "Inst Materials Physics, Bucharest", journal = "Digest Journal of Nanomaterials and Biostructures", title = "Modification of multi-wall carbon nanotubes for the removal of cadmium, lead and arsenic from wastewater", pages = "511-501", number = "2", volume = "8", url = "https://hdl.handle.net/21.15107/rcub_technorep_2411" }
Veličković, Z., Bajić, Z. J., Ristić, M., Đokić, V., Marinković, A., Uskoković, P.,& Vuruna, M.. (2013). Modification of multi-wall carbon nanotubes for the removal of cadmium, lead and arsenic from wastewater. in Digest Journal of Nanomaterials and Biostructures Inst Materials Physics, Bucharest., 8(2), 501-511. https://hdl.handle.net/21.15107/rcub_technorep_2411
Veličković Z, Bajić ZJ, Ristić M, Đokić V, Marinković A, Uskoković P, Vuruna M. Modification of multi-wall carbon nanotubes for the removal of cadmium, lead and arsenic from wastewater. in Digest Journal of Nanomaterials and Biostructures. 2013;8(2):501-511. https://hdl.handle.net/21.15107/rcub_technorep_2411 .
Veličković, Zlate, Bajić, Zoran J., Ristić, Mirjana, Đokić, Veljko, Marinković, Aleksandar, Uskoković, Petar, Vuruna, Mladen, "Modification of multi-wall carbon nanotubes for the removal of cadmium, lead and arsenic from wastewater" in Digest Journal of Nanomaterials and Biostructures, 8, no. 2 (2013):501-511, https://hdl.handle.net/21.15107/rcub_technorep_2411 .