The application of nitric oxide to control biofouling of membrane bioreactors

Microbial Biotechnology
Jinxue LuoScott A Rice

Abstract

A 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 o...Continue Reading

References

Mar 25, 1991·Nucleic Acids Research·K R Paithankar, K S Prasad
Sep 20, 2002·Brazilian Dental Journal·Carlos EstrelaJesus D Pécora
Nov 11, 2003·Journal of Microbiological Methods·G C BakerD A Cowan
Feb 5, 2005·Applied and Environmental Microbiology·B S McSwainP A Wilderer
Sep 17, 2005·International Journal of Systematic and Evolutionary Microbiology·Kwang Kyu KimSung-Taik Lee
Oct 20, 2006·Journal of Bacteriology·Nicolas BarraudJeremy S Webb
Jan 25, 2007·Applied Microbiology and Biotechnology·Ming-Yuan ChenKuan-Yeow Show
Jun 15, 2007·Applied and Environmental Microbiology·Katharina BesemerTom J Battin
Jul 24, 2007·Water Research·Mark D Williams, Massoud Pirbazari
Apr 29, 2008·Water Science and Technology : a Journal of the International Association on Water Pollution Research·A F van NieuwenhuijzenF L Schulting
Feb 24, 2009·Biomaterials·Evan M HetrickMark H Schoenfisch
Feb 26, 2009·Environmental Science & Technology·Kyung-Min YeonZbigniew Lewandowski
Aug 1, 2009·International Journal of Systematic and Evolutionary Microbiology·Valme JuradoVerónica Rodríguez-Nava
Nov 7, 2009·Science·Elizabeth K CostelloRob Knight
Feb 24, 2012·Canadian Journal of Microbiology·Ruyin LiuXinchun Liu
Aug 7, 2012·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Mijin KimSeungkwan Hong
Oct 23, 2012·FEMS Microbiology Letters·Andrés Arruebarrena Di PalmaCecilia M Creus
Jun 6, 2013·Veterinary Medicine International·M Lauren FosterJan S Suchodolski
Nov 14, 2013·PloS One·Rachel I AdamsThomas D Bruns
Sep 6, 2014·Current Pharmaceutical Design·Nicolas BarraudStaffan Kjelleberg

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Datasets Mentioned

BETA
SRR1066788

Methods Mentioned

BETA
membrane filtration
confocal microscopy
PCR

Software Mentioned

MOTHUR
IMARIS
PRIMER
SIMPER
Bitplane
SPSS

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