Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.seppur.2008.10.019
DC FieldValue
dc.titleMembrane fouling in a submerged membrane bioreactor using track-etched and phase-inversed porous membranes
dc.contributor.authorChoi, J.-H.
dc.contributor.authorPark, S.-K.
dc.contributor.authorNg, H.-Y.
dc.date.accessioned2014-10-08T08:32:48Z
dc.date.available2014-10-08T08:32:48Z
dc.date.issued2009-02-23
dc.identifier.citationChoi, J.-H., Park, S.-K., Ng, H.-Y. (2009-02-23). Membrane fouling in a submerged membrane bioreactor using track-etched and phase-inversed porous membranes. Separation and Purification Technology 65 (2) : 184-192. ScholarBank@NUS Repository. https://doi.org/10.1016/j.seppur.2008.10.019
dc.identifier.issn13835866
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/87548
dc.description.abstractThis study evaluated the impact of membrane characteristics on membrane fouling in a submerged membrane bioreactor (MBR) treating municipal wastewater. Three types of microfiltration membranes with similar pore size of 0.1 μm but different materials and pore microstructures - polyester (PETE), polycarbonate (PCTE) and polytetrafluoroethylene (PTFE) - were used. For track-etched membranes, the PETE membrane, which has the lowest pure water permeability (PWP), exhibited more rapid increase of filtration resistance than the PCTE membrane, which has the intermediate PWP, indicating the significance of membrane porosity in MBR fouling. The PTFE membrane, which has interwoven sponge-like microstructure and highest PWP, showed more rapid resistance increase compared to the PCTE track-etched membrane. This was likely due to the rougher surface of the PTFE membrane, which enhanced foulant adhesion. The trends of the filtration resistance of all the membranes gradually appeared similar after they were cleaned physically and chemically, suggesting that chemical cleaning affected MBR fouling in subsequent operation. Sludge characteristics, including sludge concentration, surface charge and hydrophobicity, did not show direct relationship with fouling rate in this study. Surface charge of the PETE membrane and its foulants layer could contribute to a lower zeta potential of the membrane permeate. It was not clearly shown that membrane hydrophobicity was a significant factor in the membrane fouling during a long-term MBR operation. Gradual increase of protein/carbohydrate ratio in bound extracellular polymeric substances was likely to contribute to the increasing fouling propensity of the membranes tested after membrane cleaning. © 2008 Elsevier B.V. All rights reserved.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1016/j.seppur.2008.10.019
dc.sourceScopus
dc.subjectExtracellular polymeric substances
dc.subjectMembrane bioreactor
dc.subjectMembrane fouling
dc.subjectOrganic removal
dc.subjectTrack-etched membrane
dc.typeArticle
dc.contributor.departmentDIVISION OF ENVIRONMENTAL SCIENCE & ENGG
dc.description.doi10.1016/j.seppur.2008.10.019
dc.description.sourcetitleSeparation and Purification Technology
dc.description.volume65
dc.description.issue2
dc.description.page184-192
dc.description.codenSPUTF
dc.identifier.isiut000263854500008
Appears in Collections:Staff Publications

Show simple item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

39
checked on Oct 28, 2020

WEB OF SCIENCETM
Citations

36
checked on Oct 20, 2020

Page view(s)

87
checked on Oct 11, 2020

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.