Kinetics and Thermodynamics of Methylene Blue Adsorption by Cereal Chaff

被引：0

作者：

Gao, Congli ^{[1
]}

Ma, Jiangyan ^{[1
]}

He, Xiaotian ^{[1
]}

Wang, Yuanfeng ^{[1
]}

Han, Runping ^{[1
]}

机构：

[1] Zhengzhou Univ, Dept Chem, Zhengzhou 450001, Henan Province, Peoples R China

来源：

2010 4TH INTERNATIONAL CONFERENCE ON BIOINFORMATICS AND BIOMEDICAL ENGINEERING (ICBBE 2010) | 2010年

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

Cereal chaff; Adsorption; Methylene blue; Kinetic; Thermodynamic parameters; AQUEOUS-SOLUTION; BATCH MODE; REMOVAL; HUSK; DYES; RED;

D O I：

暂无

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

The effect of solution temperature and the determination of the kinetic parameters of methylene blue (MB) adsorption onto cereal chaff were performed to understand the adsorption mechanism. The pseudo-second order kinetic model was fitted to the experimental data and found it was good to predict the adsorption behavior using nonlinear regressive method, suggesting that the mechanism may be a chemisorption process. The activation energy of adsorption (E-a) was 22.4 kJ mol(-1). The thermodynamic parameters (Delta G degrees,Delta H degrees, and Delta S degrees) were also determined from the temperature dependence. The results showed that the process of adsorption MB was spontaneous and endothermic process and an increase in temperature favored the adsorption. The diffusion coefficient was also estimated.

引用

页数：4

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