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

作　　者：邱运仁 张启修 王帅 

机构地区：[1]School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China [2]School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China [3]School

出　　处：《Journal of Central South University of Technology》2005年第4期448-452,共5页中南工业大学学报（英文版）

基　　金：Project(2004036429)supportedbythePostdoctoralScienceFoundationofChina

摘　　要：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-naembrane pressure.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 1000mg/L oil/water emulsion at trans-membrane pressure from 0.25 to 0.45MPa, the permeate flux is from 36 to 52L/(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.

关 键 词：polyvinyl alcohol composite membrane HYDROPHILICITY ultrafiltration~ modification polyvinyl alcohol composite membrane HYDROPHILICITY ULTRAFILTRATION MODIFICATION 

分 类 号：O631[理学—高分子化学]