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Preparation of felt-metal supported modified polyvinyl alcohol composite hydrophilic ultrafiltration membrane

  • Qiu Yun-ren Email author
  • Zhang Qi-xiu 
  • Wang Shuai 
Article

Abstract

A novel technology of preparation of felt-metal supported modified polyvinyl alcohol(PVA) ultrafiltration(UF) membrane was invented, which could avoid the blockage of the holes of support layer and the leakage of the casting solution through the holes of support layer. Felt-metal supported ferric sulfate modified PVA composite UF membranes were prepared by the innovative technology. The results show that the composite membranes are used to treat 1 000 mg/L oil/water emulsion at trans-membrane pressure from 0.25 to 0.45 MPa, the permeate flux is from 36 to 52 L/(m2 · h), and the retention of chemical oxygen demand(COD) is over 92%. The composite membrane resistance increases with the increase of trans-membrane pressure.

Key words

polyvinyl alcohol composite membrane hydrophilicity ultrafiltration modification 

CLC number

TQ028.8 

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Copyright information

© Central South University 2005

Authors and Affiliations

  1. 1.School of Chemistry and Chemical EngineeringCentral South UniversityChangshaChina
  2. 2.School of Metallurgical Science and EngineeringCentral South UniversityChangshaChina

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