Adsorption behaviors of acid and basic dyes on crosslinked amphoteric starch

被引：108

作者：

Xu, SM

Wang, JL

Wu, RL

Wang, JD ^{[1
]}

Li, H

机构：

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

[2] Xinjiang Hydrol & Water Resources Bur, Urumqi 830000, Xinjiang, Peoples R China

来源：

CHEMICAL ENGINEERING JOURNAL | 2006年 / 117卷 / 02期

关键词：

amphoteric starch; acid dyes; basic dyes; adsorption;

D O I：

10.1016/j.cej.2005.12.012

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Crosslinked amphoteric starch with carboxymethyl and quaternary ammonium groups is investigated as an adsorbent for removal of both acid and basic dyes in solution. Acid Light Yellow 2G, Acid Red G. Methyl Green and Methyl Violet were used to study the adsorption behaviors under various parameters such as pH, dose of amphoteric starches, initial dye concentration, adsorption time and adsorption temperature. At the preset pH value, the relationship between adsorption amount and the initial dye concentrations is given. The adsorption isotherm is discussed by modeling Langmuir and Freundlich isotherm. The kinetic study shows that the pseLido-second-order model fits the experimental data better. Also, the themiodynaillic parameters are shown. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：161 / 167

页数：7

共 27 条

[1] Thermodynamic behaviour and the effect of temperature on the removal of dyes from aqueous solution using modified diatomite: A kinetic study [J].