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Type: Capítulo de livro
Title: Chitosan As Adsorbent For Heavy Metal Ions: Performance And Adsorption Mechanism
Author: Vieira R.S.
Beppu M.M.
Abstract: Chitosan has recently been recognized as a biopolymer with significant potential for use as biosorbent for removal of metal ions from wastewater. Dynamic and static adsorption experiments with mercury, chromium and copper ions indicated that chitosan can be effectively used to adsorb these metals by establishing their different interactions with its amino and hydroxyl groups. In order to investigate which group is responsible for adsorbing ions or even to increase the adsorption performance, it is possible to selectively and chemically modify the structure of this biopolymer using processes such as crosslinking with glutaraldehyde or epichlorohydrin. The best recovery conditions can also be achieved by finetuning the operational parameters that influence the adsorption process and also by controlling the number of adsorption-desorption cycles. Experiments with single and multiple metal solution consolidated important knowledge that can help in defining the best practical conditions to recovery or separate some metal species selectively from wastewater by using this economical and renewable biopolymer. © 2008 by Nova Science Publishers, Inc. All rights reserved.
Editor: Nova Science Publishers, Inc.
Citation: Water Resources Research Progress. Nova Science Publishers, Inc., v. , n. , p. 149 - 175, 2008.
Rights: fechado
Date Issue: 2008
Appears in Collections:Unicamp - Artigos e Outros Documentos

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