地质学报（英文版）2006，Vol.80Issue(2)：236-242,7.
Adsorption Kinetics of Methylene Blue from Aqueous Solutions onto Palygorskite
Adsorption Kinetics of Methylene Blue from Aqueous Solutions onto Palygorskite
摘要
Abstract
The adsorption kinetics of methylene blue from aqueous solutions on purified palygorskite was investigated. The kinetics data related to the adsorption of methylene blue from aqueous solutions are in good agreement with the pseudo-second order equation in ranges of initial concentration of 120-210 mg/L, oscillation speed of 100-200 r/min and temperature of 298-328K. The experimental results show that methylene blue is only adsorbed onto the external surface of purified palygorskite,and the apparent adsorption activation energy is 13.92 k J/mol. The relatively low apparent adsorption activation energy suggests that the adsorption of methylene blue involves in not only a chemical, but also a physical adsorption process, and it is controlled by the combination of chemical adsorption and liquid-film diffusion.关键词
purified palygorskite/adsorption/methylene blue/kineticsKey words
purified palygorskite/adsorption/methylene blue/kinetics分类
天文与地球科学引用本文复制引用
PENG Shuchuan,WANG Shisheng,CHEN Tianhu,JIANG Shaotong,HUANG Chuanhui..Adsorption Kinetics of Methylene Blue from Aqueous Solutions onto Palygorskite[J].地质学报（英文版）,2006,80(2):236-242,7.基金项目
Financial supports from National Natural Science Foundation of China (No. 40472026 and No. 40072017)are gratefully acknowledged. （No. 40472026 and No. 40072017）
