Mitigation of membrane biofouling by a quorum quenching bacterium for membrane bioreactors
- Authors
- Ham, So-Young; Kim, Han-Shin; Cha, Eunji; Park, Jeong-Hoon; Park, Hee-Deung
- Issue Date
- 6월-2018
- Publisher
- ELSEVIER SCI LTD
- Keywords
- Quorum quenching; Biofouling; Enterococcus durans; Lactonase; Membrane bioreactor
- Citation
- BIORESOURCE TECHNOLOGY, v.258, pp.220 - 226
- Indexed
- SCIE
SCOPUS
- Journal Title
- BIORESOURCE TECHNOLOGY
- Volume
- 258
- Start Page
- 220
- End Page
- 226
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/75418
- DOI
- 10.1016/j.biortech.2018.03.007
- ISSN
- 0960-8524
- Abstract
- In this study, a quorum-quenching (QQ) bacterium named HEMM-1 was isolated at a membrane bioreactor (MBR) plant. HEMM-1 has diplococcal morphology and 99% sequence identity to Enterococcus species. The HEMM-1 cell-free supernatant (CFS) showed higher QQ activities than the CFS of other QQ bacteria, mostly by degrading N-acyl homoserine lactones (AHLs) with short acyl chains. Instrumental analyses revealed that HEMM-1 CFS degraded AHLs via lactonase activity. Under static, flow, and shear conditions, the HEMM-1 CFS was effective in reducing bacterial and activated-sludge biofilms formed on membrane surfaces. In conclusion, the HEMM-1 isolate is a QQ bacterium applicable to the control of biofouling in MBRs via inhibition of biofilm formation on membrane surfaces.
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Collections - College of Engineering > School of Civil, Environmental and Architectural Engineering > 1. Journal Articles
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