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Preparation of poly(ether sulfone) hollow fiber UF membrane for removal of NOM

Authors

  • Jian-Jun Qin,

    Corresponding author
    1. Centre for Advanced Water Technology, Singapore Utilities International Pte Ltd, Blk 2, # 241, Innovation Centre (NTU), 18 Nanyang Drive, 637723, Singapore
    • Centre for Advanced Water Technology, Singapore Utilities International Pte Ltd, Blk 2, # 241, Innovation Centre (NTU), 18 Nanyang Drive, 637723, Singapore
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  • Yi-Ming Cao,

    1. Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, People's Republic of China
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  • Maung-Htun Oo

    1. Centre for Advanced Water Technology, Singapore Utilities International Pte Ltd, Blk 2, # 241, Innovation Centre (NTU), 18 Nanyang Drive, 637723, Singapore
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Abstract

In this study, a high performance poly(ether sulfone) (PES) hollow fiber ultrafiltration (UF) membrane has been prepared for removal of natural organic matter (NOM). The membrane was spun from a dope solution containing PES/poly (vinyl pyrrolidone) (PVP 40K)/N-methyl-2-pyrrolidone (NMP) by using a wet-spinning process. Characterization of the membrane in terms of pure water flux, molecule weight cut-off (MWCO), and retention for a model humic acid (HA) were conducted, and the fouling resistance was analyzed. The experimental results showed that the membrane had a pure water permeability of 20 × 10−5 L m−2 h−1 Pa−1 and a nominal MWCO of 6000 Da. The results also showed that the membrane retention for humic acid was over 97% and both productivity and selectivity for HA increased with increasing feed velocity. The PES membrane in this study exhibited a much lower fouling tendency than the commercial polysulfone membrane. SEM images revealed that the membrane had an outer dense skin and a porous inner surface. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 99: 430–435, 2006

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