Study of adsorption of acid dye from aqueous solutions using bentonite

被引：35
|
作者：
Hashemian, Saeedeh [1 ]
机构：
[1] Islamic Azad Univ, Dept Chem, Yazd Branch, Yazd, Iran
来源：
MAIN GROUP CHEMISTRY | 2007年 / 6卷 / 02期
关键词：
Bentonite; Adsorption; Cyanine acid blue dye;
D O I：
10.1080/10241220701837462
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The removal of the dye cyanine acid blue ( CAB) with bentonite clay was studied. The effect of various experimental parameters was investigated using a batch adsorption technique. Saturated sodium chloride treatment results in an increase in adsorption capacity of bentonite. A pH value of 2 is favorable for the adsorption of CAB. The maximum removal of CAB is obtained at a dosage of 2 g of bentonite. The use of Fe+3 ion (2.0 x 10(-3) M) as a catalyst increased the percentage of dye removal. It was found that the Freundlich isotherm appears to fit the isotherm data better than the Langmuir isotherm. A fast adsorption rate was observed and could be well-described by a pseudo-second-order kinetics model.
引用
收藏
页码：97 / 107
页数：11
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