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Title: Three-dimensional hydraulic modeling of particle deposition on the patterned isopore membrane in crossflow microfiltration
Authors: Choi, Dong-Chan
Jung, Seon-Yeop
Won, Young-June
Jang, Jun Hee
Lee, Jaewoo
Chae, Hee-Ro
Ahn, Kyung Hyun
Lee, Sangho
Park, Pyung-Kyu
Lee, Chung-Hak
Keywords: Patterned isopore membrane
Reverse-pyramid pattern
Issue Date: 2015
Source: Choi, D. -C., Jung, S. -Y., Won, Y. -J., Jang, J. H., Lee, J., Chae, H. -R., et al. Three-dimensional hydraulic modeling of particle deposition on the patterned isopore membrane in crossflow microfiltration. Journal of Membrane Science, 492, 156-163.
Series/Report no.: Journal of Membrane Science
Abstract: Patterned membranes have been proposed as a promising solution to membrane fouling in membrane processes for water treatment. CFD modeling studies were carried out to elucidate the anti-fouling effect of patterned membranes However, patterned membranes prepared usually by a phase inversion method are more likely to have broad pore size distributions and most modeling studies are based on two-dimensional space despite the three-dimensional pattern geometry. In this study, a patterned isopore membrane with reverse-pyramid patterns on its surface and a narrow pore size distribution was prepared from UV-curable polymer by the soft lithographic method. Factors affecting particle depositions on patterned isopore membranes were investigated during the crossflow microfiltration of different micro-sized particles and their mixture. The extent of particle deposition was largely dependent on crossflow velocity, pore water flux, and particle size. Particularly, the ratio of crossflow velocity to pore water flux mostly governed the extent of particle depositions (i.e., membrane fouling) on the patterned membrane surface and 3-D modeling based on computational fluid dynamics was also conducted to predict the formation of two distinct stream lines (bulk and vortex) and elucidate the mechanisms of anti-fouling characteristics of patterned membranes.
ISSN: 0376-7388
DOI: 10.1016/j.memsci.2015.05.054
Research Centres: Nanyang Environment and Water Research Institute 
Rights: © 2015 Elsevier B. V.
Fulltext Permission: none
Fulltext Availability: No Fulltext
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