Mitigation of membrane biofouling by a quorum quenching bacterium for membrane bioreactors

So Young Ham, Han Shin Kim, Eunji Cha, Jeong Hoon Park, Hee-Deung Park

Research output: Contribution to journalArticle

9 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)220-226
Number of pages7
JournalBioresource Technology
Volume258
DOIs
Publication statusPublished - 2018 Jun 1

Fingerprint

Biofouling
biofouling
Bioreactors
bioreactor
Quenching
Bacteria
mitigation
Acyl-Butyrolactones
membrane
Membranes
bacterium
biofilm
Biofilms
activated sludge

Keywords

  • Biofouling
  • Enterococcus durans
  • Lactonase
  • Membrane bioreactor
  • Quorum quenching

ASJC Scopus subject areas

  • Bioengineering
  • Environmental Engineering
  • Renewable Energy, Sustainability and the Environment
  • Waste Management and Disposal

Cite this

Mitigation of membrane biofouling by a quorum quenching bacterium for membrane bioreactors. / Ham, So Young; Kim, Han Shin; Cha, Eunji; Park, Jeong Hoon; Park, Hee-Deung.

In: Bioresource Technology, Vol. 258, 01.06.2018, p. 220-226.

Research output: Contribution to journalArticle

Ham, So Young ; Kim, Han Shin ; Cha, Eunji ; Park, Jeong Hoon ; Park, Hee-Deung. / Mitigation of membrane biofouling by a quorum quenching bacterium for membrane bioreactors. In: Bioresource Technology. 2018 ; Vol. 258. pp. 220-226.
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