Ultrasound enhanced adsorption and desorption of phenol on activated carbon and polymeric resin

被引：140

作者：

Schueller, BS ^{[1
]}

Yang, RT ^{[1
]}

机构：

[1] Univ Michigan, Dept Chem Engn, Ann Arbor, MI 48109 USA

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2001年 / 40卷 / 22期

关键词：

D O I：

10.1021/ie010490j

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The effects of ultrasound on the adsorption and desorption of phenol using activated carbon and polymeric resin was investigated. For adsorption in a batch adsorber, ultrasound was found to act like a mixer, improving the mass-transfer coefficient through cavitation and acoustic streaming. The mass-transfer coefficient was controlling for these systems. For desorption ultrasound was found to enhance the surface diffusivity. The surface diffusivity was controlling for these systems. The activation energy for surface diffusion was decreased by ultrasound. The intense localized heating and high-pressure shock waves caused by cavitation were found to be the major cause of the decrease. Effects on all parameters were found to be dependent on ultrasonic power. While ultrasound enhanced surface diffusion, its effect on equilibrium adsorption isotherms was found to be negligible for the systems studied.

引用

页码：4912 / 4918

页数：7

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