期刊
JOURNAL OF MEMBRANE SCIENCE
卷 490, 期 -, 页码 190-196出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.memsci.2015.04.026
关键词
Patterned membrane; Hollow-fiber membrane; Prism and pyramid; Membrane bioreactor; Fouling
资金
- National Research Foundation of Korea Grant - Korean Government (MEST) [NRF-2010-C1AAA001-0029061]
- International Research and Development Program of the National Research Foundation of Korea (NRF) - Ministry of Science, ICT and Future Planningof Korea [2014K2A1B8048425]
Hollow-fiber membranes have been widely used in membrane processes for water and wastewater treatments, but membrane fouling in commercialized hollow-fiber membranes still remains a challengeable task to be solved. In this study, we introduced patterned morphology to the membrane surface of a polyvinylidene fluoride (PVDF) hollow-fiber module using a lithographic method. Two types of patterned hollow-fiber (PHF) PVDF membranes (prism and pyramid) were prepared respectively, and their anti-biofouling characteristics were tested in a membrane bioreactor (MBR) for wastewater treatment. PHF membranes with high pattern fidelity were fabricated under the pressurized injection of the non-solvent for phase inversion. The PHFs showed not only higher water flux due to the increase of the effective membrane surface, but also enhanced anti-fouling property in comparison to a non-patterned hollow-fiber membrane. The effect of the PVDF concentration and non-solvent injection rate were also investigated on the morphology and pattern fidelity of PHF membranes. (C) 2015 Elsevier B.V. All rights reserved.
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