Recovery of silver (I) using a thiourea-modified chitosan resin

被引：93

作者：

Wang, Lin ^{[1
,2
]}

Xing, Ronge ^{[1
]}

Liu, Song ^{[1
]}

Yu, Huahua ^{[1
]}

Qin, Yukun ^{[1
,2
]}

Li, Kecheng ^{[1
,2
]}

Feng, Jinhua ^{[1
,2
]}

Li, Rongfeng ^{[1
,2
]}

Li, Pengcheng ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China

[2] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2010年 / 180卷 / 1-3期

基金：

国家高技术研究发展计划(863计划);

关键词：

Recovery; Chitosan; Thiourea; Resin; Silver; Adsorption; LOW-COST ADSORBENTS; METAL-IONS; AQUEOUS-SOLUTION; ADSORPTION; EQUILIBRIUM; GOLD(III); SORPTION; WATER; PALLADIUM(II); COPPER(II);

D O I：

10.1016/j.jhazmat.2010.04.072

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

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 Schiffs 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 pseudosecond-order kinetic model. Ag(I) desorption could reach 99.23% using 0.5 M thiourea-2.0 M HCl solution. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：577 / 582

页数：6

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