Document Detail


Microbial community developments and biomass characteristics in membrane bioreactors under different organic loadings.
MedLine Citation:
PMID:  21531548     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
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 (0.57g COD/Lday) was insignificantly different from that in the medium-loading MBR (1.14g COD/Lday), which was apparently lower than that in the high-loading MBR (2.28g COD/Lday). 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 30L/m(2)h.
Authors:
Bing Wu; Shan Yi; Anthony G Fane
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-4-12
Journal Detail:
Title:  Bioresource technology     Volume:  -     ISSN:  1873-2976     ISO Abbreviation:  -     Publication Date:  2011 Apr 
Date Detail:
Created Date:  2011-5-2     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9889523     Medline TA:  Bioresour Technol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2011 Elsevier Ltd. All rights reserved.
Affiliation:
Singapore Membrane Technology Centre, Nanyang Technological University, Singapore 639798, Singapore.
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