Enhanced adsorption of congo red from aqueous solutions by chitosan hydrogel beads impregnated with cetyl trimethyl ammonium bromide

被引：307

作者：

Chatterjee, Sudipta ^{[1
]}

Lee, Dae S. ^{[2
]}

Lee, Min W. ^{[3
]}

Woo, Seung H. ^{[1
]}

机构：

[1] Hanbat Natl Univ, Dept Chem Engn, Taejon 305719, South Korea

[2] Kyungpook Natl Univ, Dept Environm Engn, Taegu 702701, South Korea

[3] Pohang Univ Sci & Technol, Sch Environm Sci & Engn, Dept Chem Engn, Pohang 790784, Gyeongbuk, South Korea

来源：

BIORESOURCE TECHNOLOGY | 2009年 / 100卷 / 11期

关键词：

Adsorption; Chitosan bead; Congo red; CTAB; Surfactant; ACTIVATED CARBON; REMOVAL; DYES; EQUILIBRIUM; ADSORBENTS; EFFLUENT; BEHAVIOR; WASTES; WATER; IONS;

D O I：

10.1016/j.biortech.2008.12.035

中图分类号：

S2 [农业工程];

学科分类号：

082806 [农业信息与电气工程];

摘要：

The adsorption of congo red (CR) onto chitosan (CS) beads impregnated by a cationic surfactant (CTAB, cetyl trimethyl ammonium bromide) was investigated. Chitosan beads impregnated at a ratio of 1/20 of CTAB to CS (0.05% of CTAB and 1% of CS) increased the CR adsorption capacity by 2.2 times from 162.3 mg/g (0% CTAB) to 352.5 mg/g (0.05% CTAB). The CR adsorption decreased with an increase in pH of the CR solution from 4.0 to 9.0. The Sips isotherm model showed a good fit with the equilibrium experimental data and the values of the heterogeneity factor (n) indicated heterogeneous adsorption of CR onto CS/CTAB beads, as well as CS beads. The kinetic data showed better fit to the pseudo second-order rate model than to the pseudo first-order rate model. The impregnation of CS beads by cationic surfactants showed the highest adsorption capacities of CR compared to any other adsorbents and would be a good method to increase adsorption efficiency for the removal of anionic dyes in a wastewater treatment process. (c) 2008 Elsevier Ltd. All rights reserved

引用

页码：2803 / 2809

页数：7

共 32 条

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Adsorption isotherm models for basic dye adsorption by peat in single and binary component systems [J].