dc.contributor.authorLuo, Jinxue
dc.contributor.authorZhang, Jinsong
dc.contributor.authorBarnes, Robert J.
dc.contributor.authorTan, Xiaohui
dc.contributor.authorMcDougald, Diane
dc.contributor.authorFane, Anthony G.
dc.contributor.authorZhuang, Guoqiang
dc.contributor.authorKjelleberg, Staffan
dc.contributor.authorCohen, Yehuda
dc.contributor.authorRice, Scott A.
dc.identifier.citationLuo, J., Zhang, J., Barnes, R. J., Tan, X., McDougald, D., Fane, A. G., et al. (2015). The application of nitric oxide to control biofouling of membrane bioreactors. Microbial biotechnology, 8(3), 549-560.en_US
dc.description.abstractA novel strategy to control membrane bioreactor (MBR) biofouling using the nitric oxide (NO) donor compound PROLI NONOate was examined. When the biofilm was pre-established on membranes at transmembrane pressure (TMP) of 88–90 kPa, backwashing of the membrane module with 80 μM PROLI NONOate for 45 min once daily for 37 days reduced the fouling resistance (Rf) by 56%. Similarly, a daily, 1 h exposure of the membrane to 80 μM PROLI NONOate from the commencement of MBR operation for 85 days resulted in reduction of the TMP and Rf by 32.3% and 28.2%. The microbial community in the control MBR was observed to change from days 71 to 85, which correlates with the rapid TMP increase. Interestingly, NO-treated biofilms at 85 days had a higher similarity with the control biofilms at 71 days relative to the control biofilms at 85 days, indicating that the NO treatment delayed the development of biofilm bacterial community. Despite this difference, sequence analysis indicated that NO treatment did not result in a significant shift in the dominant fouling species. Confocal microscopy revealed that the biomass of biopolymers and microorganisms in biofilms were all reduced on the PROLI NONOate-treated membranes, where there were reductions of 37.7% for proteins and 66.7% for microbial cells, which correlates with the reduction in TMP. These results suggest that NO treatment could be a promising strategy to control biofouling in MBRs.en_US
dc.format.extent13 p.en_US
dc.relation.ispartofseriesMicrobial biotechnologyen_US
dc.rights© 2015 The Authors. Microbial Biotechnology published by John Wiley & Sons Ltd and Society for Applied Microbiology. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.en_US
dc.subjectDRNTU::Science::Biological sciences::Microbiology::Microbial ecology
dc.titleThe application of nitric oxide to control biofouling of membrane bioreactorsen_US
dc.typeJournal Article
dc.contributor.researchAdvanced Environmental Biotechnology Centre (AEBC)en_US
dc.contributor.researchSingapore Membrane Technology Centre
dc.contributor.researchSingapore Centre for Environmental Life Sciences and Engineering
dc.contributor.schoolSchool of Biological Sciencesen_US
dc.description.versionPublished versionen_US

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