Enhanced performance of submerged hollow fibre microfiltration by fluidized granular activated carbon
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, nam...
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sg-ntu-dr.10356-827532020-09-26T22:02:04Z Enhanced performance of submerged hollow fibre microfiltration by fluidized granular activated carbon Wu, Bing Wang, Yuanyuan Lim, Weikang Chew, Jia Wei Fane, Anthony Gordon Liu, Yu School of Chemical and Biomedical Engineering School of Civil and Environmental Engineering Nanyang Environment and Water Research Institute Singapore Membrane Technology Centre Advanced Environmental Biotechnology Centre (AEBC) Hollow fibre spacing GAC particle size Intermittent fluidization Membrane fouling Membrane integrity 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. NRF (Natl Research Foundation, S’pore) EDB (Economic Devt. Board, S’pore) Accepted version 2016-03-17T08:31:30Z 2019-12-06T15:04:50Z 2016-03-17T08:31:30Z 2019-12-06T15:04:50Z 2016 Journal Article 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. 0376-7388 https://hdl.handle.net/10356/82753 http://hdl.handle.net/10220/40295 10.1016/j.memsci.2015.10.050 en Journal of Membrane Science © 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: [http://dx.doi.org/10.1016/j.memsci.2015.10.050]. 33 p. application/pdf |
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Hollow fibre spacing GAC particle size Intermittent fluidization Membrane fouling Membrane integrity |
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Hollow fibre spacing GAC particle size Intermittent fluidization Membrane fouling Membrane integrity Wu, Bing Wang, Yuanyuan Lim, Weikang Chew, Jia Wei Fane, Anthony Gordon Liu, Yu Enhanced performance of submerged hollow fibre microfiltration by fluidized granular activated carbon |
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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. |
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School of Chemical and Biomedical Engineering |
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School of Chemical and Biomedical Engineering Wu, Bing Wang, Yuanyuan Lim, Weikang Chew, Jia Wei Fane, Anthony Gordon Liu, Yu |
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Article |
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Wu, Bing Wang, Yuanyuan Lim, Weikang Chew, Jia Wei Fane, Anthony Gordon Liu, Yu |
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Wu, Bing |
title |
Enhanced performance of submerged hollow fibre microfiltration by fluidized granular activated carbon |
title_short |
Enhanced performance of submerged hollow fibre microfiltration by fluidized granular activated carbon |
title_full |
Enhanced performance of submerged hollow fibre microfiltration by fluidized granular activated carbon |
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Enhanced performance of submerged hollow fibre microfiltration by fluidized granular activated carbon |
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Enhanced performance of submerged hollow fibre microfiltration by fluidized granular activated carbon |
title_sort |
enhanced performance of submerged hollow fibre microfiltration by fluidized granular activated carbon |
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2016 |
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https://hdl.handle.net/10356/82753 http://hdl.handle.net/10220/40295 |
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