Investigation of a basic dye adsorption from aqueous solution onto raw and pre-treated sepiolite surfaces

被引：99
|
作者：
Eren, E. [1 ]
Afsin, B. [1 ]
机构：
[1] Ondokuz Mayis Univ, Dept Chem, Arts & Sci Fac, TR-55139 Kurupelit, Samsun, Turkey
来源：
DYES AND PIGMENTS | 2007年 / 73卷 / 02期
关键词：
thermodynamics; cationic dye; charge reversal; adsorption isotherm; crystal violet; sepiolite;
D O I：
10.1016/j.dyepig.2005.11.004
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
The temperature, pH and ionic strength effects on the adsorption of crystal violet (CV) by raw, base activated and Al-saturated sepiolite samples were studied. Al-saturated sepiolite has relatively weak ability for CV adsorption compared to the raw clay, whereas the highest adsorption observed for the base activated sepiolite may be due to the Na+ ions replaced part of Mg2+ located at the edges of the channels. Different thermodynamic parameters for raw and pre-treated sepiolite samples indicate the adsorption of the dye component on a non-uniform surface. (c) 2005 Elsevier Ltd. All rights reserved.
引用
收藏
页码：162 / 167
页数：6
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