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Technology for the sorption of metal ions has attracted great attention due to the sequestration of toxic metals from industrial effluents.Chitosan,β-(1-4)-linked D-glucosamine,a naturally occurring biopolymer is very versatile and hence has been used in this study as the primary material for metal sorption.To improve its metal binding capabilities chitosan was modified with ethylenediaminetetraacetic acid(EDTA).