| Literature DB >> 20466482 |
Lin Wang1, Ronge Xing, Song Liu, Huahua Yu, Yukun Qin, Kecheng Li, Jinhua Feng, Rongfeng Li, Pengcheng Li.
Abstract
This work describes the preparation of a chelating resin from chemically modified chitosan. The resin was synthesized by using O-carboxymethylated chitosan to cross-link a polymeric Schiff's base of thiourea/glutaraldehyde and characterized by IR. Batch method was applied for testing the resin's adsorption behavior. Adsorption experiments showed the resin had good adsorption capacity and high selectivity for Ag(I) in aqueous solution. The maximum uptake of Ag(I) exhibited was 3.77 mmol/g, at pH 4.0. The results also indicated that the adsorption process was exothermic and fit well with the pseudo-second-order kinetic model. Ag(I) desorption could reach 99.23% using 0.5 M thiourea-2.0 M HCl solution. Copyright 2010 Elsevier B.V. All rights reserved.Entities:
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Year: 2010 PMID: 20466482 DOI: 10.1016/j.jhazmat.2010.04.072
Source DB: PubMed Journal: J Hazard Mater ISSN: 0304-3894 Impact factor: 10.588