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Title: Enhanced performance of submerged hollow fibre microfiltration by fluidized granular activated carbon
Authors: Wu, Bing
Wang, Yuanyuan
Lim, Weikang
Chew, Jia Wei
Fane, Anthony Gordon
Liu, Yu
Keywords: Hollow fibre spacing
GAC particle size
Intermittent fluidization
Membrane fouling
Membrane integrity
Issue Date: 2016
Source: Wu, B., Wang, Y., Lim, W., Chew, J. W., Fane, A. G., & Liu, Y. (2016). Enhanced performance of submerged hollow fibre microfiltration by fluidized granular activated carbon. Journal of Membrane Science, (499), 47-55.
Series/Report no.: Journal of Membrane Science
Abstract: The effect of fluidized granular activated carbon (GAC) on membrane filtration performance was investigated using a bench-scale upflow hollow fibre membrane filtration setup under constant flux operation. The membrane fouling tendencies were compared among five different experimental parameters, namely, GAC size, GAC packing amount, hollow fibre spacing, filtration/idle duration, and fluidization/idle duration. The results indicate that largersized GAC particles, higher packing amounts and a ratio of hollow fibre spacing to fluidized particle size of approximately 3-5 are most beneficial for fouling control. Unexpectedly, the intermittent filtration (under continuous fluidization) could not further alleviate membrane fouling compared to continuous filtration, possibly due to inefficient interaction of fluidized GAC particles with membrane surface in absence of permeate driving force. To lower energy consumption, the optimization of intermittent fluidization (under continuous filtration) was performed. Results indicate that the nature of the cake layer formed during non-fluidization period determined the membrane fouling development rather than the fluidization time span. Finally, by comparing the membrane permeability, sodium alginate rejection rate, and membrane properties before and after GAC abrasion, the GAC scouring on membrane integrity was negligible.
ISSN: 0376-7388
DOI: 10.1016/j.memsci.2015.10.050
Schools: School of Chemical and Biomedical Engineering 
School of Civil and Environmental Engineering 
Research Centres: Nanyang Environment and Water Research Institute 
Singapore Membrane Technology Centre 
Advanced Environmental Biotechnology Centre (AEBC) 
Rights: © 2015 Elsevier. This is the author created version of a work that has been peer reviewed and accepted for publication by Journal of Membrane Science, Elsevier. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [].
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:CEE Journal Articles
NEWRI Journal Articles
SCBE Journal Articles

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