Journal of South China University of Technology (Natural Science Edition) ›› 2005, Vol. 33 ›› Issue (3): 83-86,94.

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Mathematical Simulation of the Rising Rate of Dispersed Phase Droplets in Static Aqueous Two-Phase System

Hu song-qing  Li Lin  Chen Ling  Guo Si-yuan  Cai Miao-yan   

  1. College of Light Chemistry and Food Science,South China Univ.of Tech.,Guangzhou 510640,Guangdong,China
  • Received:2004-06-11 Online:2005-03-25 Published:2005-03-25
  • Contact: 胡松青(1972-)，男，博士，讲师，主要从事分离与纯化的理论与技术，以及功率超声在生物化工和食品化工中的应用研究 E-mail:fesqhu@scut.edu.cn
  • About author:胡松青(1972-)，男，博士，讲师，主要从事分离与纯化的理论与技术，以及功率超声在生物化工和食品化工中的应用研究
  • Supported by:

    广东省自然科学基金资助项目(000453)；华南理工大学高水平大学建设重大项目(32 1-D655030)

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Abstract:

First,the constant-speed stage during the phase separation of aqueous two-phase system in static circumstance was properly hypothesized,and the framework of the rising rate model for dispersed phase droplets was estab-lished via mechanical analytical method.Next.the density difference between the bottom and the top phases,the viscosity and the phase ratio of two phases of 11 different PEG/phosphate aqueous two-phase systems were determined.Then,according to the volume variation of the dispersed phase measured by experiments,the rising rates of dispersed phase droplets in different systems were obtained.The model parameters were finally decided by means of the system identification.Thus,a mathematical model of the maximum rising rate of dispersed phase droplets during the phase separation of aqueous two-phase system was established.

Key words: aqueous two-phase system , droplet, rising rate, mathematical simulation