Kinetic Rate Constant of Liquid Drainage from Colloidal Gas Aphrons

作     者：罗建洪 李军 黄平 黄美英 LUO Jianhong;LI Jun;HUANG Ping;HUANG Meiying

作者机构：Department of Chemical Engineering Sichuan University Chengdu 610065 China Chongqing Three Gorges University Chongqing 404000 China 

出 版 物：《Chinese Journal of Chemical Engineering》 (中国化学工程学报（英文版）)

年 卷 期：2009年第17卷第6期

页      面：955-959页

核心收录：

学科分类：0710[理学-生物学] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 081704[工学-应用化学] 0817[工学-化学工程与技术] 08[工学] 080202[工学-机械电子工程] 0804[工学-仪器科学与技术] 081701[工学-化学工程] 0703[理学-化学] 0802[工学-机械工程] 

基　　金：Supported by the Eleventh Five Year National Key Technology R&D Program (2008BAE58B01) New Century Excellent Talents of Ministry of Education (NCET-07-0577),the People’s Republic of China 

主　　题：colloidal gas aphrons liquid drainage stability rate constants 

摘      要：A kinetic model fitted by the empirical equation has been proposed to describe the liquid drainage behavior. Rate constants （kd） of liquid drainage equation could be obtained from the above empirical equation. In this paper, the stability of the colloidal gas aphrons （CGAs）, the effect of concentrations of sodium dodecyl benzene sulphate （SDBS）, dodecyl trimethylammonium bromide （HTAB） and polyoxyethylene sorbitol anhydride monolaurate（Tween-20）, temperature, stirring speed, stirring time, and various kinds of salts on the kd of liquid drainage are further investigated. The results show that the Arrhenius equation can be successfully used to describe the relation between kd arid absolute temperature （T）, and concentrations of surfactants, stirring speed, stirring time and salinities also have great effect on the kd. At last, the CGAs drainage mechanism is explained from analysis of the rate of liquid drainage as a function of time.