Journal article
Inhibiting quorum sensing pathways to mitigate seawater desalination RO membrane biofouling
Desalination, Vol.393, pp.135-143
2016
Abstract
Bacterial biofilm formation, the main cause of membrane biofouling, is a crucial issue for membrane separation. Biofilm production is regulated by quorum sensing (QS) systems where bacteria secrete auto-inducers to communicate with neighboring bacteria. This research identified that several marine bacteria isolated from a desalination plant produced a low molecular weight auto-inducer 1 (AI-1) signaling molecule. AI-1 production in the mixed culture of the four different biofilm-forming marine bacteria was greater than in individual bacterial cultures. The QS inhibiting compounds, vanillin and cinnamaldehyde at 1200. mg/L significantly reduced biofilm formed by these marine bacteria by more than 79% and 70%, respectively in a microtiter plate assay. Anti-biofilm capabilities of vanillin and cinnamaldehyde were further assessed in a reverse osmosis membrane bio-monitoring system using mixed bacterial cultures and native uncultured bacterial communities in natural seawater. Confocal microscopy showed vanillin (1200. mg/L) significantly reduced biofilm extracellular polysaccharides and dead cells on the membrane surface (>. 40%, >. 20%). These results indicate that QS inhibitors have the potential to remediate membrane biofouling.
Details
- Title
- Inhibiting quorum sensing pathways to mitigate seawater desalination RO membrane biofouling
- Authors/Creators
- L. Katebian (Author/Creator)E. Gomez (Author/Creator)L. Skillman (Author/Creator)D. Li (Author/Creator)G. Ho (Author/Creator)S.C. Jiang (Author/Creator)
- Publication Details
- Desalination, Vol.393, pp.135-143
- Publisher
- Elsevier BV
- Identifiers
- 991005541558407891
- Copyright
- © 2016 Elsevier B.V.
- Murdoch Affiliation
- School of Veterinary and Life Sciences
- Language
- English
- Resource Type
- Journal article
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- Collaboration types
- Domestic collaboration
- International collaboration
- Citation topics
- 1 Clinical & Life Sciences
- 1.42 Bacteriology
- 1.42.567 Quorum Sensing
- Web Of Science research areas
- Engineering, Chemical
- Water Resources
- ESI research areas
- Chemistry