Study on adsorption behavior of crosslinked cationic starch maleate for chromium(VI)

被引：52

作者：

Xing, Guo-xiu ^{[1
]}

Zhang, Shu-fen ^{[1
]}

Ju, Ben-zhi ^{[1
]}

Yang, Jin-zong ^{[1
]}

机构：

[1] Dalian Univ Technol, State Key Lab Fine Chem, Dalian 116012, Peoples R China

来源：

CARBOHYDRATE POLYMERS | 2006年 / 66卷 / 02期

基金：

中国国家自然科学基金;

关键词：

crosslinked amphoteric starch; adsorption; Cr(VI); thermodynamics;

D O I：

10.1016/j.carbpol.2006.03.005

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Crosslinked cationic starch maleates (CCSM) containing quaternary ammonium cationic groups were prepared by a dry reaction. The adsorption behavior of crosslinked cationic starch maleates for Cr(VI) was investigated. Physicochemical factors such as equilibrium time, temperature, and initial solution pH affecting magnitude of Cr(VI) adsorption were studied. Their adsorption behavior was found to follow langmuir isotherm. The adsorption capacity decreased with increasing DS of anionic maleic groups. The thermodynamic investigation demonstrated that the adsorption process was exothermic, and thermodynamic parameters were calculated at different DS. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：246 / 251

页数：6

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