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

Research output: Contribution to journal › Article › peer-review

48 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 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
Publication status	Published - 2018 Jun

Bibliographical note

Funding Information:
This work was supported by the Korea Ministry of the Environment “Converging Technology Project” ( 2012001440001 ), the National Research Foundation of Korea ( NRF-2016R1D1A1B03935940 ), and a grant from Korea University. We would like to thank professor Joon-Hee Lee from Pusan National University for kindly providing the RhlR reporter strains, professor Ji Hyang Kweon from Konkuk University for providing the A136 strains, and Joo Hee Chung from the Korea Basic Science Institute for performing the HPLC and ESI-MS analyses.

Funding Information:
This work was supported by the Korea Ministry of the Environment “Converging Technology Project” (2012001440001), the National Research Foundation of Korea (NRF-2016R1D1A1B03935940), and a grant from Korea University. We would like to thank professor Joon-Hee Lee from Pusan National University for kindly providing the RhlR reporter strains, professor Ji Hyang Kweon from Konkuk University for providing the A136 strains, and Joo Hee Chung from the Korea Basic Science Institute for performing the HPLC and ESI-MS analyses.

Publisher Copyright:
© 2018 Elsevier Ltd

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

UN SDGs

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

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10.1016/j.biortech.2018.03.007

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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 = "Funding Information: This work was supported by the Korea Ministry of the Environment “Converging Technology Project” ( 2012001440001 ), the National Research Foundation of Korea ( NRF-2016R1D1A1B03935940 ), and a grant from Korea University. We would like to thank professor Joon-Hee Lee from Pusan National University for kindly providing the RhlR reporter strains, professor Ji Hyang Kweon from Konkuk University for providing the A136 strains, and Joo Hee Chung from the Korea Basic Science Institute for performing the HPLC and ESI-MS analyses. Funding Information: This work was supported by the Korea Ministry of the Environment “Converging Technology Project” (2012001440001), the National Research Foundation of Korea (NRF-2016R1D1A1B03935940), and a grant from Korea University. We would like to thank professor Joon-Hee Lee from Pusan National University for kindly providing the RhlR reporter strains, professor Ji Hyang Kweon from Konkuk University for providing the A136 strains, and Joo Hee Chung from the Korea Basic Science Institute for performing the HPLC and ESI-MS analyses. Publisher Copyright: {\textcopyright} 2018 Elsevier Ltd",

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language = "English",

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AU - Park, Hee Deung

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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.

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KW - Lactonase

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SN - 0960-8524

VL - 258

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ER -

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

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

UN SDGs

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