Characterization of polysulfone hollow-fiber ultrafiltration membrane and its cleaning efficiency by streaming potential and flux method

  • Yun-ren Qiu (邱运仁)Email author
  • Chang Miao (缪 畅)
  • Hong-qi Ye (叶红齐)


Polysulfone (PS) hollow-fiber ultrafiltration membrane was characterized combined with flux and streaming potential in single electrolyte solutions. The effects of trans-membrane pressure, electrolyte concentration, ion valence and pH value of electrolyte solution on the streaming potential (SP) of the membrane were investigated. The zeta potential and surface charge density of the membrane were calculated on the basis of Helmholtz-Smoluchowski equation and Gouy-Chapmann theory. The results indicate that the valence and concentration of cation have a greater influence on the SP and surface charge density of PS membrane than those of anion, and the pH value of electrolyte solution has great effects on the SP and zeta potential of the membrane surface. Both the absolute value of the streaming potential and water flux of the adsorbed membrane decrease, compared with those of the clean membrane. The streaming potential and flux of the cleaned membrane can be completely recovered by cleaning with the mass fraction of 0.8% EDTA at pH=10.

Key words

hollow fiber membrane polysulfone ultrafiltration streaming potential cleaning 


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Copyright information

© Central South University Press and Springer-Verlag GmbH 2009

Authors and Affiliations

  • Yun-ren Qiu (邱运仁)
    • 1
    Email author
  • Chang Miao (缪 畅)
    • 1
  • Hong-qi Ye (叶红齐)
    • 1
  1. 1.School of Chemistry and Chemical EngineeringCentral South UniversityChangshaChina

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