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

doi:10.1016/j.biortech.2018.03.007

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^*

^*Corresponding author for this work

Environmental Biotechnology

Korea University

Research output: Contribution to journal › Journal article › peer-review

56 Scopus citations

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 language	English
Pages (from-to)	220-226
Number of pages	7
Journal	Bioresource Technology
Volume	258
DOIs	https://doi.org/10.1016/j.biortech.2018.03.007
State	Published - 2018.06

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 6 Clean Water and Sanitation

Keywords

Biofouling
Enterococcus durans
Lactonase
Membrane bioreactor
Quorum quenching

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10.1016/j.biortech.2018.03.007

Cite this

@article{382585cdab134ce2806912129cd3d91a,

title = "Mitigation of membrane biofouling by a quorum quenching bacterium for membrane bioreactors",

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.",

keywords = "Biofouling, Enterococcus durans, Lactonase, Membrane bioreactor, Quorum quenching",

author = "Ham, \{So Young\} and Kim, \{Han Shin\} and Eunji Cha and Park, \{Jeong Hoon\} and Park, \{Hee Deung\}",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier Ltd",

year = "2018",

month = jun,

doi = "10.1016/j.biortech.2018.03.007",

language = "English",

volume = "258",

pages = "220--226",

journal = "Bioresource Technology",

issn = "0960-8524",

}

TY - JOUR

T1 - Mitigation of membrane biofouling by a quorum quenching bacterium for membrane bioreactors

AU - Ham, So Young

AU - Kim, Han Shin

AU - Cha, Eunji

AU - Park, Jeong Hoon

AU - Park, Hee Deung

PY - 2018/6

Y1 - 2018/6

N2 - 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.

AB - 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.

KW - Biofouling

KW - Enterococcus durans

KW - Lactonase

KW - Membrane bioreactor

KW - Quorum quenching

UR - https://www.scopus.com/pages/publications/85043320637

U2 - 10.1016/j.biortech.2018.03.007

DO - 10.1016/j.biortech.2018.03.007

M3 - Journal article

C2 - 29525597

AN - SCOPUS:85043320637

SN - 0960-8524

VL - 258

SP - 220

EP - 226

JO - Bioresource Technology

JF - Bioresource Technology

ER -

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

Abstract

UN SDGs

Keywords

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