Removal of Congo red from aqueous solution by anilinepropylsilica xerogel

被引：216
|
作者：
Pavan, Flavio A. [1 ]
Dias, Silvio L. P. [1 ]
Lima, Eder C. [1 ]
Benvenutti, Edilson V. [1 ]
机构：
[1] Univ Fed Rio Grande do Sul, Inst Quim, BR-91501970 Porto Alegre, RS, Brazil
来源：
DYES AND PIGMENTS | 2008年 / 76卷 / 01期
关键词：
Congo red; dye adsorption; hybrid organic-inorganic xerogels; silica based materials; isotherm models;
D O I：
10.1016/j.dyepig.2006.08.027
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
The hybrid anilinepropylsilica xerogel (SiAn) was synthesized by sot-gel method and it was used as adsorbent for removing Congo red from aqueous solutions. The dye adsorption experiments were carried out by using bath procedure. The pH effects, the contact time and the initial dye concentration were changed to obtain the best experimental conditions. The dye adsorption equilibrium was rapidly attained after 20 min of contact time. The experimental data were best fitted to Sips and Redlich -Peterson isotherm models, attaining a maximum adsorption capacity of 22.62 mg g(-1) of Congo red. (C) 2006 Elsevier Ltd. All rights reserved.
引用
收藏
页码：64 / 69
页数：6
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