Adsorption of Zn(II) ion onto crosslinked amphoteric starch in aqueous solutions

被引：14

作者：

Cao, LQ ^{[1
]}

Xu, SM ^{[1
]}

Feng, S ^{[1
]}

Peng, G ^{[1
]}

Wang, JD ^{[1
]}

机构：

[1] Xinjiang Univ, Coll Chem & Chem Engn, Urumqi 830046, Peoples R China

来源：

JOURNAL OF POLYMER RESEARCH | 2004年 / 11卷 / 02期

关键词：

adsorption; amphoteric starch; crosslinked; metal ions;

D O I：

10.1023/B:JPOL.0000031066.67853.28

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Adsorption behaviors between Zn2+ ion and crosslinked amphoteric starches (CAS) with quaternary ammonium and carboxymethyl groups in aqueous solutions were investigated. Various factors in the adsorption process, including the pH, temperature. time and initial concentration of Zn2+, the dose of CAS, as well as the degree of substitution (DS) of carboxymethyl group are discussed. The adsorption followed the Langmuir isotherm. And the thermodynamic study indicated that the adsorption processes was endothermic, and thermodynamic parameters were calculated.

引用

页码：105 / 108

页数：4

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