Investigation of the Factors Affecting the Removal of an Acid Dye from Aqueous Solution by Adsorption Using Bentonite and Sepiolite

被引：7

作者：

Bilgic, Ceyda ^{[1
]}

机构：

[1] Osmangazi Univ, Fac Engn & Architecture, Dept Chem Engn, TR-26480 Eskisehir, Turkey

来源：

ADSORPTION SCIENCE & TECHNOLOGY | 2008年 / 26卷 / 05期

关键词：

D O I：

10.1260/026361708787548765

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The effects of some factors on the adsorption of an Acid dye (Acid Blue 193, AB 193) from aqueous solution onto bentonite and sepiolite samples were studied. These factors were saturation of the samples with cations (Na+ and Ca2+), the pH and the ionic strength of the dye solution. The Langmuir and Freundlich adsorption models were used to describe the equilibrium isotherm and determine the isotherm constants for each of the samples. The Langmuir model agreed very well with the experimental data. Cation saturation led to an increase in the adsorption capacities of the samples. In addition, the adsorption capacities decreased with increasing pH of the dye solution and increased with increasing ionic strength. The maximum adsorption capacity of both the bentonite and sepiolite samples towards the cationic dye Methylene Blue (MB) was higher than that towards the anionic dye AB 193.

引用

页码：363 / 372

页数：10

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