Metal anion sorption on chitosan and derivative materials: a strategy for polymer modification and optimum use

被引：137

作者：

Chassary, P ^{[1
]}

Vincent, T ^{[1
]}

Guibal, E ^{[1
]}

机构：

[1] Ecole Mines, Lab Genie Environm Ind, F-30319 Ales, France

来源：

REACTIVE & FUNCTIONAL POLYMERS | 2004年 / 60卷 / 1-3期

关键词：

chitosan; molybdate; vanadate; platinate; palladate; arsenate; physical modification; chemical modification; crystallinity; metal speciation; diffusion properties; sorption selectivity;

D O I：

10.1016/j.reactfunctpolym.2004.02.018

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The affinity of chitosan for several metal anions (molybdate, vanadate, arsenate, chloro-platinate and chloropalladate) was investigated with the objective of identifying the controlling parameters (related to intrinsic polymer properties, diffusion properties and the properties of the metal in solution). Better understanding of sorption mechanisms and controlling steps may help not only in optimizing the use of these biosorbents but also in designing new chitosan-based sorbents. Some examples of physical modification (gel bead conditioning) and chemical modification (grafting of polyethyleneimine, sulfur compounds, impregnation with metal ions) are given to illustrate the versatility of the polymer and its promising performances for the recovery of toxic and/or valuable metal anions. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：137 / 149

页数：13

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