Specific location of encapsulated quorum quenching bacteria for biofouling control in an external submerged membrane bioreactor

Daniyal Jahangir, Hyun Suk Oh, Sang Ryoung Kim, Pyungkyu Park, Chung Hak Lee, Jung Kee Lee

Research output: Contribution to journalArticle

51 Citations (Scopus)

Abstract

A number of recent studies have demonstrated that quorum sensing (QS) using signal molecules, N-acyl homoserine lactone (AHL), plays a role in the formation of biofilm on the surface of membranes in a membrane bioreactor (MBR). In this study, the membrane biofouling in an external submerged MBR was inhibited by interrupting AHL-mediated QS with quorum quenching bacteria encapsulated inside the porous vessel (microbial-vessel). The quorum quenching effect of the microbial-vessel was more pronounced when the microbial-vessel was positioned nearer to the filtration membrane in MBR, i.e., in the membrane tank rather than in the bioreactor. Its quorum quenching effect was also largely dependent on the recirculation rate of the mixed liquor between the bioreactor and the membrane tank. The microbial-vessel maintained its quorum quenching activity steadily over 100. days of the MBR operation due to continuous regeneration of living quorum quenching bacteria inside the microbial-vessel. This strategy effectively interrupted cell-to-cell communications (quorum sensing), and thereby exhibited energy saving potential by reducing the aeration rate in MBR.

Original languageEnglish
Pages (from-to)130-136
Number of pages7
JournalJournal of Membrane Science
Volume411-412
DOIs
Publication statusPublished - 2012 Sep 1

Fingerprint

Biofouling
bioreactors
Quorum Sensing
Bioreactors
bacteria
Quenching
Bacteria
quenching
membranes
Membranes
vessels
Acyl-Butyrolactones
aeration
biofilms
Biofilms
cells
regeneration
Cell Communication
Regeneration
Energy conservation

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Materials Science(all)
  • Physical and Theoretical Chemistry
  • Filtration and Separation

Cite this

Jahangir, Daniyal ; Oh, Hyun Suk ; Kim, Sang Ryoung ; Park, Pyungkyu ; Lee, Chung Hak ; Lee, Jung Kee. / Specific location of encapsulated quorum quenching bacteria for biofouling control in an external submerged membrane bioreactor. In: Journal of Membrane Science. 2012 ; Vol. 411-412. pp. 130-136.
@article{3d710e79df9b4b91ab9d0ed3e37b9ea9,
title = "Specific location of encapsulated quorum quenching bacteria for biofouling control in an external submerged membrane bioreactor",
abstract = "A number of recent studies have demonstrated that quorum sensing (QS) using signal molecules, N-acyl homoserine lactone (AHL), plays a role in the formation of biofilm on the surface of membranes in a membrane bioreactor (MBR). In this study, the membrane biofouling in an external submerged MBR was inhibited by interrupting AHL-mediated QS with quorum quenching bacteria encapsulated inside the porous vessel (microbial-vessel). The quorum quenching effect of the microbial-vessel was more pronounced when the microbial-vessel was positioned nearer to the filtration membrane in MBR, i.e., in the membrane tank rather than in the bioreactor. Its quorum quenching effect was also largely dependent on the recirculation rate of the mixed liquor between the bioreactor and the membrane tank. The microbial-vessel maintained its quorum quenching activity steadily over 100. days of the MBR operation due to continuous regeneration of living quorum quenching bacteria inside the microbial-vessel. This strategy effectively interrupted cell-to-cell communications (quorum sensing), and thereby exhibited energy saving potential by reducing the aeration rate in MBR.",
author = "Daniyal Jahangir and Oh, {Hyun Suk} and Kim, {Sang Ryoung} and Pyungkyu Park and Lee, {Chung Hak} and Lee, {Jung Kee}",
year = "2012",
month = "9",
day = "1",
doi = "10.1016/j.memsci.2012.04.022",
language = "English",
volume = "411-412",
pages = "130--136",
journal = "Journal of Membrane Science",
issn = "0376-7388",
publisher = "Elsevier",

}

Specific location of encapsulated quorum quenching bacteria for biofouling control in an external submerged membrane bioreactor. / Jahangir, Daniyal; Oh, Hyun Suk; Kim, Sang Ryoung; Park, Pyungkyu; Lee, Chung Hak; Lee, Jung Kee.

In: Journal of Membrane Science, Vol. 411-412, 01.09.2012, p. 130-136.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Specific location of encapsulated quorum quenching bacteria for biofouling control in an external submerged membrane bioreactor

AU - Jahangir, Daniyal

AU - Oh, Hyun Suk

AU - Kim, Sang Ryoung

AU - Park, Pyungkyu

AU - Lee, Chung Hak

AU - Lee, Jung Kee

PY - 2012/9/1

Y1 - 2012/9/1

N2 - A number of recent studies have demonstrated that quorum sensing (QS) using signal molecules, N-acyl homoserine lactone (AHL), plays a role in the formation of biofilm on the surface of membranes in a membrane bioreactor (MBR). In this study, the membrane biofouling in an external submerged MBR was inhibited by interrupting AHL-mediated QS with quorum quenching bacteria encapsulated inside the porous vessel (microbial-vessel). The quorum quenching effect of the microbial-vessel was more pronounced when the microbial-vessel was positioned nearer to the filtration membrane in MBR, i.e., in the membrane tank rather than in the bioreactor. Its quorum quenching effect was also largely dependent on the recirculation rate of the mixed liquor between the bioreactor and the membrane tank. The microbial-vessel maintained its quorum quenching activity steadily over 100. days of the MBR operation due to continuous regeneration of living quorum quenching bacteria inside the microbial-vessel. This strategy effectively interrupted cell-to-cell communications (quorum sensing), and thereby exhibited energy saving potential by reducing the aeration rate in MBR.

AB - A number of recent studies have demonstrated that quorum sensing (QS) using signal molecules, N-acyl homoserine lactone (AHL), plays a role in the formation of biofilm on the surface of membranes in a membrane bioreactor (MBR). In this study, the membrane biofouling in an external submerged MBR was inhibited by interrupting AHL-mediated QS with quorum quenching bacteria encapsulated inside the porous vessel (microbial-vessel). The quorum quenching effect of the microbial-vessel was more pronounced when the microbial-vessel was positioned nearer to the filtration membrane in MBR, i.e., in the membrane tank rather than in the bioreactor. Its quorum quenching effect was also largely dependent on the recirculation rate of the mixed liquor between the bioreactor and the membrane tank. The microbial-vessel maintained its quorum quenching activity steadily over 100. days of the MBR operation due to continuous regeneration of living quorum quenching bacteria inside the microbial-vessel. This strategy effectively interrupted cell-to-cell communications (quorum sensing), and thereby exhibited energy saving potential by reducing the aeration rate in MBR.

UR - http://www.scopus.com/inward/record.url?scp=84861526097&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84861526097&partnerID=8YFLogxK

U2 - 10.1016/j.memsci.2012.04.022

DO - 10.1016/j.memsci.2012.04.022

M3 - Article

VL - 411-412

SP - 130

EP - 136

JO - Journal of Membrane Science

JF - Journal of Membrane Science

SN - 0376-7388

ER -