Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/94044
Title: Microbial community developments and biomass characteristics in membrane bioreactors under different organic loadings
Authors: Wu, Bing
Yi, Shan
Fane, Anthony Gordon
Keywords: DRNTU::Engineering::Environmental engineering::Water treatment
Issue Date: 2011
Source: Wu, B., Yi, S. & Fane, A. G. (2011). Microbial community developments and biomass characteristics in membrane bioreactors under different organic loadings. Bioresource Technology 102(13), 6808–6814.
Series/Report no.: Bioresource technology
Abstract: Microbial community developments and biomass characteristics (concentration, particle size, extracellular polymeric substances (EPS), and membrane fouling propensity) were compared when three MBRs were fed with the synthetic wastewater at different organic loadings. Results showed that the bacterial communities dynamically shifted in different ways and the EPS displayed dissimilar profiles under various organic loadings, which were associated with the ratios of food to microorganism and dissolved oxygen levels in the MBRs. The membrane fouling tendency of biomass in the low-loading MBR (0.57 g COD/L day) was insignificantly different from that in the medium-loading MBR (1.14 g COD/L day), which was apparently lower than that in the high-loading MBR (2.28 g COD/L day). The membrane fouling propensity of biomass was strongly correlated with their bound EPS contents, indicating cake layer fouling (i.e., deposition of microbial flocs) was predominant in membrane fouling at a high flux of 30 L/m2 h.
URI: https://hdl.handle.net/10356/94044
http://hdl.handle.net/10220/7196
ISSN: 0960-8524
DOI: 10.1016/j.biortech.2011.04.012
Research Centres: Singapore Membrane Technology Centre 
Rights: © 2011 Elsevier. This is the author created version of a work that has been peer reviewed and accepted for publication by Bioresource technology, 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: [DOI: http://dx.doi.org/10.1016/j.biortech.2011.04.012]
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:CEE Journal Articles

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