Removal of rhodamine B from aqueous solution by adsorption onto sodium montmorillonite

被引：215
|
作者：
Selvam, P. Panneer [1 ]
Preethi, S. [1 ]
Basakaralingam, P. [2 ]
Thinakaran, N. [1 ]
Sivasamy, A. [3 ]
Sivanesan, S. [1 ]
机构：
[1] Anna Univ, AC Coll Technol, Dept Chem Engn, Madras 600025, Tamil Nadu, India
[2] Velammal Engn Coll, Madras 600066, Tamil Nadu, India
[3] Cent Leather Res Inst, Div Chem Engn, Madras 600020, Tamil Nadu, India
来源：
JOURNAL OF HAZARDOUS MATERIALS | 2008年 / 155卷 / 1-2期
关键词：
sodium montmorillonite; rhodamine B; adsorption isotherms; kinetics;
D O I：
10.1016/j.jhazmat.2007.11.025
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The adsorption of rhodamine B dye was carried out using sodium montmorillonite clay. The effect of parameters such as pH, adsorbent dosage and initial dye concentration was studied. The Langmuir and Freundlich isotherm models were applied and the Langmuir model was found to best fit the equilibrium isotherm data. Langmuir adsorption capacity was found to be 42.19 mg/g. Kinetic data followed pseudo-second-order kinetics. Maximum color removal was observed at pH 7.0. The Delta G degrees value was found to be negative, the adsorption process was feasible. The results indicate that sodium montmorillonite clay can be used for the removal of basic dyes from aqueous solutions. (c) 2007 Elsevier B.v. All rights reserved.
引用
收藏
页码：39 / 44
页数：6
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