Adsorption thermodynamics of Methylene Blue onto bentonite

被引：265

作者：

Hong, Song ^{[2
]}

Wen, Cheng ^{[2
]}

He, Jing ^{[2
]}

Gan, Fuxing ^{[2
]}

Ho, Yuh-Shan ^{[1
,3
]}

机构：

[1] Asia Univ, Dept Biotechnol, Coll Hlth Sci, Taichung 41354, Taiwan

[2] Wuhan Univ, Sch Resource & Environm Sci, Wuhan 430079, Peoples R China

[3] China Med Univ, Coll Life Sci, Dept Biol Sci & Technol, Taichung 40402, Taiwan

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2009年 / 167卷 / 1-3期

关键词：

Sorption; Thermodynamics; Trial-and-error method; Temperature; Bentonite; ADSORBED SOLUTION THEORY; AQUEOUS-SOLUTION; TREE FERN; SORPTION ISOTHERM; METAL-IONS; BASIC DYE; KINETICS; REMOVAL; COPPER; LEAD;

D O I：

10.1016/j.jhazmat.2009.01.014

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The effect of temperature on the equilibrium adsorption of Methylene Blue dye from aqueous solution using bentonite was investigated. The equilibrium adsorption data were analyzed using three widely applied isotherms: Langmuir, Freundlich, and Redlich-Peterson. A non-linear method was used for comparing the best fit of the isotherms. Best fit was found to be Redlich-Peterson isotherm. Thermodynamic parameters, such as Delta G degrees, Delta H degrees, and Delta S degrees, were calculated using adsorption equilibrium constant obtained from the Langmuir isotherm. Results suggested that the Methylene Blue adsorption on bentonite was a spontaneous and endothermic process. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：630 / 633

页数：4

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