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Reference type: Journal
Authors: Zarghami S, Mohammadi T, Kazemimoghadam M
Article Title: Adsorption Behavior of Cu(II) Ions on Crosslinked Chitosan/Polyvinyl Alcohol Ion Imprinted Membrane.
Publication date: 2015
Journal: Journal of Dispersion Science and Technology
Volume: 36
Issue: (2)
Page numbers: 190-195.
DOI: 10.1080/01932691.2014.894916

Abstract: A self-supported ion imprinted membrane (IIM) adsorbent was synthesized via crosslinking of blended chitosan/polyvinyl alcohol (CS/PVA) with glutaraldehyde (GA) as crosslinker and copper ions as template via the solution casting method. The prepared membrane was used as adsorbent to evaluate Cu(II) ions adsorption from aqueous solutions. The metal ion equilibrium concentrations were determined and Langmuir and Freundlich isotherm models were applied to fit to the experimental data. Finally, adsorption kinetics were examined using pseudo-first-order, pseudo-second-order, and intra-particle diffusion models. It was found out that adsorption behavior of Cu(II) ions via the IIM adsorbent match well with Freundlich isotherm and pseudo-second-order kinetic models. Reusability of the adsorptive Cu(II) imprinted membrane was confirmed via five sorption-regeneration cycles using HCl 0.5 mol L-1 as desorbing agent. The SEM analysis showed that Cu(II) ions can be well adsorbed by the IIM adsorbent
Template and target information: copper ion, Cu(II)
Author keywords: adsorption isotherm, chitosan, Cu(II) adsorption, ion imprinted membrane (IIM), kinetic model, PVA, solution casting

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