Adsorption of fast green and erythrosin-B to montmorillonite modified with crystal violet

被引：0
|
作者：
G. Rytwo
R. Huterer-Harari
S. Dultz
Y. Gonen
机构：
[1] Tel Hai Academic College,Institute of Soil Science
[2] Biotechnology and Environmental Sciences Department,undefined
[3] MIGAL,undefined
[4] Galilee Technological Center,undefined
[5] University of Hannover,undefined
来源：
Journal of Thermal Analysis and Calorimetry | 2006年 / 84卷
关键词：
adsorption; crystal violet; erythrosin-B; fast green; isosteric enthalpy of adsorption; montmorillonite; organoclay;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Adsorption of erythrosin-B (EB) and fast green (FG) to a non-charged organosmectite based on crystal violet adsorbed up to 100% of the cation exchange capacity (CEC) was tested. Adsorption isotherms of EB and FG were prepared at 3, 24 and 50°C. All isotherms are of H-type reaching loads of approximately up to 20% of the original CEC of the crude montmorillonite (up to 0.15 and 0.10 mol dye kg–1 clay for EB and FG, respectively). Adsorption decreases with temperature, indicating an exothermic process. Enthalpy was evaluated using van’t Hoff equation, yielding approximately –20 kJ mol–1 for both dyes.
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页码：225 / 231
页数：6
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