Biofouling control by quorum sensing (QS) inhibition and the influence of membrane surface characteristics on biofilm formation and QS inhibition were investigated. Pseudomonas putida isolated from the bio-fouled reverse osmosis (RO) membranes in a real plant was used. Acylase was chosen as a model QS inhibitor. Bacteria on the membrane coupons were quantified with the heterotrophic plate count method. Cell distribution was imaged by a confocal laser scanning microscope. Results showed that biofilm formation on the membrane was reduced by acylase as it inhibits the activity of N-acylhomoserine lactone (AHL) which is a signal molecule of QS. It was also shown that membrane surface characteristics were influential factors affecting bacterial adhesion, biofilm formation, and QS inhibition.
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Research Article|
October 01 2012
Biofouling control by quorum sensing inhibition and its dependence on membrane surface
Mijin Kim;
Mijin Kim
1School of Civil, Environmental & Architectural Engineering, Korea University, 1, 5-ga, Anam-Dong, Sungbuk-Gu, Seoul, 136-713, Korea
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Sangyoup Lee;
Sangyoup Lee
1School of Civil, Environmental & Architectural Engineering, Korea University, 1, 5-ga, Anam-Dong, Sungbuk-Gu, Seoul, 136-713, Korea
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Hee-deung Park;
Hee-deung Park
1School of Civil, Environmental & Architectural Engineering, Korea University, 1, 5-ga, Anam-Dong, Sungbuk-Gu, Seoul, 136-713, Korea
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Suing-il Choi;
Suing-il Choi
2Department of Environmental Engineering, Sejong Campus, Korea University, Jochiwon-Eup, Yeongi-Gun, Chungnam, 339-700, Korea
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Seungkwan Hong
1School of Civil, Environmental & Architectural Engineering, Korea University, 1, 5-ga, Anam-Dong, Sungbuk-Gu, Seoul, 136-713, Korea
E-mail: skhong21@korea.ac.kr
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Water Sci Technol (2012) 66 (7): 1424–1430.
Article history
Received:
January 17 2012
Accepted:
April 25 2012
Citation
Mijin Kim, Sangyoup Lee, Hee-deung Park, Suing-il Choi, Seungkwan Hong; Biofouling control by quorum sensing inhibition and its dependence on membrane surface. Water Sci Technol 1 October 2012; 66 (7): 1424–1430. doi: https://doi.org/10.2166/wst.2012.307
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