Journal of South China University of Technology (Natural Science Edition) ›› 2009, Vol. 37 ›› Issue (3): 85-89.

• Chemistry & Chemical Engineering • Previous Articles     Next Articles

Performances of PAN/PS Blend Membrane Under Action of Electric Field

Xiao Kai-jun1  Yuan Liang1   Liu Wen-shan1  Li Lin1  Zhou Xian-hong2  Yin Yu-rong 1   

  1. 1. Research Institute of Light Industry and Chemical Engineering, South China University of Technology, Guangzhou 510640, Guangdong, China ; 2. Department of Chemical and Biochemical Engineering, Dongguan University of Technology, Dongguan 523808, Guangdong, China
  • Received:2008-02-26 Revised:2008-06-10 Online:2009-03-25 Published:2009-03-25
  • Contact: 肖凯军（1969-），男，博士，教授，主要从事膜材料的制备及应用研究． E-mail:fekjxiao@scut．edu．cn
  • About author:肖凯军（1969-），男，博士，教授，主要从事膜材料的制备及应用研究．
  • Supported by:

    “十一五”国家科技支撑计划资助项目（2006BAD05A02）;2006年粤港关键领域重点突破项目（20060107-2）;东莞市科技攻关项目（2006014）

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Abstract:

The separation performances of polyacrylonitrile/polysulphone （PAN/PS） blend membrane under the action of an external DC electric field were investigated by measuring the membrane flux, the retention rate as well as the decline and recovery of the flux, with bovine serum albumin （67000 in relative molecular mass） as the ultra- filtration object. The results show that both the flux and the retention rate of the blend membrane increase in an ex- ternal positive electric field, that the flux and the retention rate increase respectively by 85% and by 1.1% in ＋ 120V/cm electric field, that the flux decreases from 57. 14% to 26. 33% in ＋60V/cm electric field, and that the flux recovery rate reaches more than 90% due to the self-cleaning by electric field. It is thus concluded that an external electric field may improve the separation performances and increase the flux, retention rate and anti-fouling property of the blend membrane.

Key words: bovine serum albumin, electric field, polyacrylonitrile/polysulphone blend membrane, separation performance, membrane parameter