Removal of Cu2+ ions using hydrogels of chitosan, itaconic and methacrylic acid: FTIR, SEM/EDX, AFM, kinetic and equilibrium study
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2011
Authors
Milosavljevic, Nedeljko B.Ristic, Mirjana D.
Peric-Grujic, Aleksandra A.
Filipovic, Jovanka M.
Štrbac, Svetlana

Rakočević, Zlatko Lj.

Kalagasidis Krušić, Melina

Article (Published version)

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A removal of Cu2+ ions from aqueous solutions onto hydrogels of chitosan. itaconic and methacrylic acid has been investigated using batch adsorption technique. The extent of adsorption was investigated as a function of pH, adsorbent dose, initial metal ion concentration, contact time and temperature. The FIR spectra showed that -NH2, -OH and -COOH groups are involved in the Cu2+ ions adsorption. The surface topography changes were observed by AFM, where the phase images indicated that sorption takes place on the surface of the hydrogel and in the bulk. Pseudo-first order, pseudo-second order and intraparticle diffusion models were analyzed and showed that the Cu2+ ions adsorption followed pseudo-second order kinetics. The equilibrium data were analyzed using Langmuir, Freundlich and Redlich-Peterson isotherms and the best interpretation was given by Redlich-Peterson. The adsorption capacity was found to be 122.59 mg/g, based on the non-linear Langmuir isotherm. Based on the separation ...factor. R-L, the Cu2+ ion adsorption is favorable, while the low activation energies indicate physisorption. Desorption experiments, done with a nitric acid, showed that the investigated hydrogels could be reused without significant losses of the initial properties even after three adsorption-sorption cycles.
Keywords:
Hydrogel / Cu2+ adsorption / AFM / Adsorption isotherm / Kinetic model / DesorptionSource:
Colloids and Surfaces A-Physicochemical and Engineering Aspects, 2011, 388, 1-3, 59-69Publisher:
- Elsevier
Funding / projects:
- Synthesis and characterization of novel functional polymers and polymeric nanocomposites (RS-172062)
- Development and Application of Methods and Materials for Monitoring New Organic Contaminants, Toxic Compounds and Heavy Metals (RS-172007)
DOI: 10.1016/j.colsurfa.2011.08.011
ISSN: 0927-7757
WoS: 000296222700008
Scopus: 2-s2.0-80052941188
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IHTMTY - JOUR AU - Milosavljevic, Nedeljko B. AU - Ristic, Mirjana D. AU - Peric-Grujic, Aleksandra A. AU - Filipovic, Jovanka M. AU - Štrbac, Svetlana AU - Rakočević, Zlatko Lj. AU - Kalagasidis Krušić, Melina PY - 2011 UR - https://cer.ihtm.bg.ac.rs/handle/123456789/800 AB - A removal of Cu2+ ions from aqueous solutions onto hydrogels of chitosan. itaconic and methacrylic acid has been investigated using batch adsorption technique. The extent of adsorption was investigated as a function of pH, adsorbent dose, initial metal ion concentration, contact time and temperature. The FIR spectra showed that -NH2, -OH and -COOH groups are involved in the Cu2+ ions adsorption. The surface topography changes were observed by AFM, where the phase images indicated that sorption takes place on the surface of the hydrogel and in the bulk. Pseudo-first order, pseudo-second order and intraparticle diffusion models were analyzed and showed that the Cu2+ ions adsorption followed pseudo-second order kinetics. The equilibrium data were analyzed using Langmuir, Freundlich and Redlich-Peterson isotherms and the best interpretation was given by Redlich-Peterson. The adsorption capacity was found to be 122.59 mg/g, based on the non-linear Langmuir isotherm. Based on the separation factor. R-L, the Cu2+ ion adsorption is favorable, while the low activation energies indicate physisorption. Desorption experiments, done with a nitric acid, showed that the investigated hydrogels could be reused without significant losses of the initial properties even after three adsorption-sorption cycles. PB - Elsevier T2 - Colloids and Surfaces A-Physicochemical and Engineering Aspects T1 - Removal of Cu2+ ions using hydrogels of chitosan, itaconic and methacrylic acid: FTIR, SEM/EDX, AFM, kinetic and equilibrium study VL - 388 IS - 1-3 SP - 59 EP - 69 DO - 10.1016/j.colsurfa.2011.08.011 ER -
@article{ author = "Milosavljevic, Nedeljko B. and Ristic, Mirjana D. and Peric-Grujic, Aleksandra A. and Filipovic, Jovanka M. and Štrbac, Svetlana and Rakočević, Zlatko Lj. and Kalagasidis Krušić, Melina", year = "2011", abstract = "A removal of Cu2+ ions from aqueous solutions onto hydrogels of chitosan. itaconic and methacrylic acid has been investigated using batch adsorption technique. The extent of adsorption was investigated as a function of pH, adsorbent dose, initial metal ion concentration, contact time and temperature. The FIR spectra showed that -NH2, -OH and -COOH groups are involved in the Cu2+ ions adsorption. The surface topography changes were observed by AFM, where the phase images indicated that sorption takes place on the surface of the hydrogel and in the bulk. Pseudo-first order, pseudo-second order and intraparticle diffusion models were analyzed and showed that the Cu2+ ions adsorption followed pseudo-second order kinetics. The equilibrium data were analyzed using Langmuir, Freundlich and Redlich-Peterson isotherms and the best interpretation was given by Redlich-Peterson. The adsorption capacity was found to be 122.59 mg/g, based on the non-linear Langmuir isotherm. Based on the separation factor. R-L, the Cu2+ ion adsorption is favorable, while the low activation energies indicate physisorption. Desorption experiments, done with a nitric acid, showed that the investigated hydrogels could be reused without significant losses of the initial properties even after three adsorption-sorption cycles.", publisher = "Elsevier", journal = "Colloids and Surfaces A-Physicochemical and Engineering Aspects", title = "Removal of Cu2+ ions using hydrogels of chitosan, itaconic and methacrylic acid: FTIR, SEM/EDX, AFM, kinetic and equilibrium study", volume = "388", number = "1-3", pages = "59-69", doi = "10.1016/j.colsurfa.2011.08.011" }
Milosavljevic, N. B., Ristic, M. D., Peric-Grujic, A. A., Filipovic, J. M., Štrbac, S., Rakočević, Z. Lj.,& Kalagasidis Krušić, M.. (2011). Removal of Cu2+ ions using hydrogels of chitosan, itaconic and methacrylic acid: FTIR, SEM/EDX, AFM, kinetic and equilibrium study. in Colloids and Surfaces A-Physicochemical and Engineering Aspects Elsevier., 388(1-3), 59-69. https://doi.org/10.1016/j.colsurfa.2011.08.011
Milosavljevic NB, Ristic MD, Peric-Grujic AA, Filipovic JM, Štrbac S, Rakočević ZL, Kalagasidis Krušić M. Removal of Cu2+ ions using hydrogels of chitosan, itaconic and methacrylic acid: FTIR, SEM/EDX, AFM, kinetic and equilibrium study. in Colloids and Surfaces A-Physicochemical and Engineering Aspects. 2011;388(1-3):59-69. doi:10.1016/j.colsurfa.2011.08.011 .
Milosavljevic, Nedeljko B., Ristic, Mirjana D., Peric-Grujic, Aleksandra A., Filipovic, Jovanka M., Štrbac, Svetlana, Rakočević, Zlatko Lj., Kalagasidis Krušić, Melina, "Removal of Cu2+ ions using hydrogels of chitosan, itaconic and methacrylic acid: FTIR, SEM/EDX, AFM, kinetic and equilibrium study" in Colloids and Surfaces A-Physicochemical and Engineering Aspects, 388, no. 1-3 (2011):59-69, https://doi.org/10.1016/j.colsurfa.2011.08.011 . .