Removal of reactive blue 221 and acid blue 62 anionic dyes from aqueous solutions by sepiolite

被引：166

作者：

Alkan, M ^{[1
]}

Çelikçapa, S ^{[1
]}

Demirbas, Ö ^{[1
]}

Dogan, M ^{[1
]}

机构：

[1] Univ Balikesir, Fac Sci & Literature, Dept Chem, TR-10100 Balikesir, Turkey

来源：

DYES AND PIGMENTS | 2005年 / 65卷 / 03期

关键词：

sepiolite; anionic dyes; adsorption; Freundlich isotherm;

D O I：

10.1016/j.dyepig.2004.07.018

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The removal of reactive blue 221 and acid blue 62 anionic dyes onto sepiolite from aqueous solutions has been investigated using parameters such as calcination temperature, pH, ionic strength and temperature. After 200degreesC calcination temperature. the specific surface area of sepiolite decreased with increasing calcination temperature. The amount adsorbed of reactive blue 221 and acid blue 62 on sepiolite increased with increasing ionic strength and temperature, and decreasing pH. The sepiolite sa pie calcinated at 200degreesC has a maximum adsorption capacity. However, calcination at higher temperature caused a decrease in the amount adsorbed of dye. It was found that the Freundlich isotherm appears to fit the isotherm data better than the Langmuir isotherm. Furthermore. it can be said that sepiolite has a considerable potential as an adsorbent for dyestuffs in a commercial systems. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：251 / 259

页数：9

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