Kim, Inae Choi, Dong-Chan Lee, Jaewoo Chae, Hee-Ro Jang, Jun Hee Lee, Chung-Hak Park, Pyung-Kyu Won, Young-June 2024-01-20T06:03:53Z 2024-01-20T06:03:53Z 2021-09-04 2015-09-15 0376-7388 https://pubs.kist.re.kr/handle/201004/125020 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. English ELSEVIER SCIENCE BV SOFT LITHOGRAPHY Preparation and application of patterned hollow-fiber membranes to membrane bioreactor for wastewater treatment Article 10.1016/j.memsci.2015.04.026 1 JOURNAL OF MEMBRANE SCIENCE, v.490, pp.190 - 196 JOURNAL OF MEMBRANE SCIENCE 490 190 196 scie scopus 000355742800021 2-s2.0-84930205956 Engineering, Chemical Polymer Science Engineering Polymer Science Article SOFT LITHOGRAPHY Patterned membrane Hollow-fiber membrane Prism and pyramid Membrane bioreactor Fouling