A novel color removal adsorbent from heterocoagulation of cationic and anionic clays

被引：83

作者：

Hu, Qiuhong

Xu, Zhiping

Qiao, Shizhang

Haghseresht, Fouad

Wilson, Michael

Lu, Gao Qing ^{[1
]}

机构：

[1] Univ Queensland, Sch Engn, ARC Ctr Funct Nanomat, St Lucia, Qld 4072, Australia

[2] Univ Western Sydney, Penrith, NSW 1797, Australia

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2007年 / 308卷 / 01期

基金：

澳大利亚研究理事会;

关键词：

color removal; adsorbent; bentonite; layered double hydroxide; clay;

D O I：

10.1016/j.jcis.2006.12.052

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We report the preparation and characterization of a novel nanocomposite adsorbent for anionic dye removal. The nanocomposite adsorbent was prepared by heterocoagulation of delaminated bentonite and layered double hydroxide (LDH) colloids. The effects of preparation conditions, LDH loading, particle size, and calcination temperature of the modified material on the physicochemical properties of this composite adsorbent have been investigated. The optimal conditions for best Reactive Yellow 2 (RY2) dye removal efficiency are a weight ratio of LDH to bentonite of 1: 1: LDH particle size 100 run, and calcination temperature 673 K. The adsorption equilibrium data can be fitted well by the widely accepted adsorption isotherm models. (c) 2007 Elsevier Inc. All rights reserved.

引用

页码：191 / 199

页数：9

共 39 条

[1] Stabilization of emulsions by heterocoagulation of clay minerals and layered double hydroxides [J].