SCI和EI收录∣中国化工学会会刊

›› 2009, Vol. 17 ›› Issue (6): 955-959.

• SEPARATION SCIENCE AND ENGINEERING • Previous Articles     Next Articles

Kinetic Rate Constant of Liquid Drainage from Colloidal Gas Aphrons

LUO Jianhong1, LI Jun1, HUANG Ping1, HUANG Meiying2   

  1. 1. Department of Chemical Engineering, Sichuan University, Chengdu 610065, China;
    2. Chongqing Three Gorges University, Chongqing 404000, China
  • Received:2008-11-27 Revised:2009-07-07 Online:2009-12-28 Published:2009-12-28
  • Supported by:
    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

Kinetic Rate Constant of Liquid Drainage from Colloidal Gas Aphrons

罗建洪1, 李军1, 黄平1, 黄美英2   

  1. 1. Department of Chemical Engineering, Sichuan University, Chengdu 610065, China;
    2. Chongqing Three Gorges University, Chongqing 404000, China
  • 通讯作者: LI Jun,E-mail:lijun@email.scu.edu.cn
  • 基金资助:
    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

Abstract: 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 and 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.

Key words: 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 and 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.

关键词: colloidal gas aphrons, liquid drainage, stability, rate constants