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Reference type: Journal
Authors: Nishad PA, Bhaskarapillai A, Velmurugan S, Narasimhan SV
Article Title: Cobalt (II) imprinted chitosan for selective removal of cobalt during nuclear reactor decontamination.
Publication date: 2012
Journal: Carbohydrate Polymers
Volume: 87
Issue: (4)
Page numbers: 2690-2696.
DOI: 10.1016/j.carbpol.2011.11.061
Alternative URL: http://www.sciencedirect.com/science/article/pii/S014486171101054X

Abstract: The selectivity of chitosan has been modified through metal ion imprinting technique for its potential application in nuclear industry. Considerable reduction in radioactive waste volume, generated during the chemical decontamination of nuclear power plants, can be achieved through the selective removal of the radionuclides. In this context, a Co(II) imprinted chitosan was synthesized using epichlorohydrin as the crosslinker. The selective removal of Co(II) in presence of Fe(II), which is the major non-radioactive ion present in excess during decontamination, was studied. The imprinted chitosan showed selective sorption of Co(II) over Fe(II), while the raw chitosan was selective to Fe(II) over Co(II). The imprinted chitosan was found to retain the enhanced selectivity towards Co(II) under various solution conditions, including typical nuclear reactor decontamination formulations containing strong complexants. The highest uptake by the imprinted chitosan, with maximum selectivity for Co(II) over Fe(II), was obtained in citrate medium at pH 4.8
Template and target information: cobalt ion, Co(II)
Author keywords: cobalt, chitosan, Nuclear, Decontamination, imprinted polymer, Selectivity modification


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