Journal
WATER SCIENCE AND TECHNOLOGY
Volume 66, Issue 4, Pages 799-803Publisher
IWA PUBLISHING
DOI: 10.2166/wst.2012.238
Keywords
antibacterial properties; antifouling; CuCl2; Escherichia coli (E. coli); hollow fiber membrane; three-bore polyethersulfone (PES) ultrafiltration (UF)
Funding
- National Natural Science Foundation of China [21106137]
- National High Technology Research and Development Program ('863' Program) of China [2008AA06Z330]
- Research Fund for the Doctoral Program of Higher Education of China [20114101120001]
- University Innovation Research and Training Program [101045930]
- Innovation Scientists and Technicians Troop Construction Projects of Zhengzhou City
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In this study, a three-bore polyethersulfone (PES) hollow fiber ultrafiltration (UF) membrane with antibacterial properties was prepared by phase inversion, using PES as the membrane material, N, N-dimethylacetamide (DMAC) as solvent, polyvinylpyrrolidone (PVP) and CuCl2 as additives. The effect of CuCl2 content on the water flux and rejection was studied and the antibacterial properties of PES hollow fiber UF membrane were also investigated. The water flux results indicated that the hydrophilic properties of PES UF membranes were improved after adding CuCl2. The rejection of PVA-50000 was expected to drop slightly but remain high above 96%. The membranes showed good antibacterial activity against Escherichia coli (E. coli) after adding CuCl2 and the antibacterial rate of PES/CuCl2 UF membranes was close to 100% after running for 48 h. PES hollow fiber UF membranes with antibacterial properties were prepared through the formation of the water-soluble PVP/Cu2+ complex with spatial network structure, which have good antibacterial and hydrophilic properties. Therefore, this study could provide an effective method for membrane antifouling.
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