膜
聚偏氟乙烯
相位反转
结垢
生物污染
材料科学
膜生物反应器
中空纤维膜
化学工程
纤维
膜污染
色谱法
复合材料
化学
聚合物
生物化学
工程类
作者
Inae Kim,Dong Chan Choi,Jae Woo Lee,Hee Ro Chae,Jun Hee Jang,Chung Hak Lee,Pyung Kyu Park,Young June Won
标识
DOI:10.1016/j.memsci.2015.04.026
摘要
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.
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