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dc.contributor.authorYeon, Kyung-Min
dc.contributor.authorCheong, Won-Seok
dc.contributor.authorOh, Hyun-Suk
dc.contributor.authorLee, Woo-Nyoung
dc.contributor.authorHwang, Byung-Kook
dc.contributor.authorLee, Chung-Hak
dc.contributor.authorBeyenal, Haluk
dc.date.accessioned2017-07-12T19:22:54Z
dc.date.available2017-07-12T19:22:54Z
dc.date.issued2009-01
dc.identifier.citationYeon K-M, Cheong W-S, Oh H-S, Lee W-N, Hwang B-K, Lee C-H, Beyenal H, Lewandowski Z, "Quorum sensing: A new biofouling control paradigm in a membrane bioreactor for advanced wastewater treatment," Environ. Sci. Technol. 2009 43(2):380–385en_US
dc.identifier.issn0013-936X
dc.identifier.urihttps://scholarworks.montana.edu/xmlui/handle/1/13229
dc.description.abstractBacteria regulate specific group behaviors such as biofilm formation in response to population density using small signal molecules called autoinducers (quorum sensing, QS). In this study, the concept of bacterial QS was applied to membrane bioreactors (MBRs) for advanced wastewater treatment as a new biofouling control paradigm. The research was conducted in three phases: (1) demonstrate the presence of the autoinducer signal in MBRs, (2) correlate QS activity and membrane biofouling, (3) apply QS-based membrane biofouling control. A bioassay with Agrobacterium tumefaciens reporter strain proved that N-acyl homoserine lactone (AHL) autoinducers were produced in the MBR. Furthermore, thinlayer chromatographic analysis identified at least three different AHLs in the biocake, of which N-octanoyl-homoserine lactone was the most abundant. During continuous MBR operation, the biocakeshowedstrongAHLactivity simultaneously with abrupt increase in the transmembrane pressure, which implies that QS is in close association with membrane biofouling. Porcine kidney acylase I, which can inactivate the AHL molecule by amide bond cleavage, was confirmed to prevent membrane biofouling by quenching AHL autoinducers. From these results, it was concluded that QS could be a novel target for biofouling control in MBRs.en_US
dc.titleQuorum sensing: A new biofouling control paradigm in a membrane bioreactor for advanced wastewater treatmenten_US
dc.typeArticleen_US
mus.citation.extentfirstpage380en_US
mus.citation.extentlastpage385en_US
mus.citation.issue2en_US
mus.citation.journaltitleEnvironmental Science & Technologyen_US
mus.citation.volume43en_US
mus.identifier.categoryEngineering & Computer Scienceen_US
mus.identifier.doi10.1021/es8019275en_US
mus.relation.collegeCollege of Engineeringen_US
mus.relation.departmentCenter for Biofilm Engineering.en_US
mus.relation.departmentChemical & Biological Engineering.en_US
mus.relation.departmentChemical Engineering.en_US
mus.relation.universityMontana State University - Bozemanen_US
mus.relation.researchgroupCenter for Biofilm Engineering.en_US
mus.data.thumbpage5en_US


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