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Article: Upon impact: The fate of adhering pseudomonas fluorescens cells during nanofiltration

TitleUpon impact: The fate of adhering pseudomonas fluorescens cells during nanofiltration
Authors
Issue Date2014
Citation
Environmental Science and Technology, 2014, v. 48, n. 16, p. 9641-9650 How to Cite?
AbstractNanofiltration (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. © 2014 American Chemical Society.
Persistent Identifierhttp://hdl.handle.net/10722/228199
ISSN
2015 Impact Factor: 5.393
2015 SCImago Journal Rankings: 2.664

 

DC FieldValueLanguage
dc.contributor.authorHabimana, Olivier-
dc.contributor.authorSemião, Andrea J C-
dc.contributor.authorCasey, Eoin-
dc.date.accessioned2016-08-01T06:45:26Z-
dc.date.available2016-08-01T06:45:26Z-
dc.date.issued2014-
dc.identifier.citationEnvironmental Science and Technology, 2014, v. 48, n. 16, p. 9641-9650-
dc.identifier.issn0013-936X-
dc.identifier.urihttp://hdl.handle.net/10722/228199-
dc.description.abstractNanofiltration (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. © 2014 American Chemical Society.-
dc.languageeng-
dc.relation.ispartofEnvironmental Science and Technology-
dc.titleUpon impact: The fate of adhering pseudomonas fluorescens cells during nanofiltration-
dc.typeArticle-
dc.description.natureLink_to_subscribed_fulltext-
dc.identifier.doi10.1021/es500585e-
dc.identifier.pmid25072514-
dc.identifier.scopuseid_2-s2.0-84906244241-
dc.identifier.volume48-
dc.identifier.issue16-
dc.identifier.spage9641-
dc.identifier.epage9650-
dc.identifier.eissn1520-5851-

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