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  5. Upon impact: the fate of adhering Pseudomonas fluorescens cells during Nanofiltration
 
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Upon impact: the fate of adhering Pseudomonas fluorescens cells during Nanofiltration

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Author(s)
Habimana, Olivier 
Correia-Semião, Andrea Joana C. 
Casey, Eoin 
Uri
http://hdl.handle.net/10197/5888
Date Issued
29 July 2014
Date Available
29T03:00:10Z July 2015
Abstract
Nanofiltration (NF) is a high-pressure membrane filtration process increasingly applied in drinking water treatment and water reuse processes. NF typically rejects divalent salts, organic matter, and micropollutants. However, the efficiency of NF is adversely affected by membrane biofouling, during which microorganisms adhere to the membrane and proliferate to create a biofilm. Here we show that adhered Pseudomonas fluorescens cells under high permeate flux conditions are met with high fluid shear and convective fluxes at the membrane-liquid interface, resulting in their structural damage and collapse. These results were confirmed by fluorescent staining, flow cytometry, and scanning electron microscopy. This present study offers a 'first-glimpse' of cell damage and death during the initial phases of bacterial adhesion to NF membranes and raises a key question about the role of this observed phenomena during early-stage biofilm formation under permeate flux and cross-flow conditions.
Other Sponsorship
European Research Council (ERC)
Type of Material
Journal Article
Publisher
American Chemical Society
Journal
Environmental Science and Technology
Volume
48
Issue
16
Start Page
9641
End Page
9650
Copyright (Published Version)
2014 American Chemical Society
Keywords
  • Biofilm

  • Nanofiltration pseudo...

  • Cell

  • Bacterial adhesion

  • Nanofiltration

  • Permeate flux

  • Hydrodynamic shear

  • Cell fate

DOI
10.1021/es500585e
Language
English
Status of Item
Peer reviewed
This item is made available under a Creative Commons License
https://creativecommons.org/licenses/by-nc-nd/3.0/ie/
Owning collection
Chemical and Bioprocess Engineering Research Collection
Scopus© citations
9
Acquisition Date
Mar 20, 2023
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