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    Filtration–UV irradiation as an option for mitigating the risk of microbiologically influenced corrosion of subsea construction alloys in seawater

    194133_194133.pdf (1.868Mb)
    Access Status
    Open access
    Authors
    Machuca, Laura
    Jeffrey, R.
    Bailey, Stuart
    Gubner, Rolf
    Watkin, Elizabeth
    Ginige, M.
    Kaksonen, A.
    Heidersbach, K.
    Date
    2014
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Machuca, Laura L. and Jeffrey, Robert and Bailey, Stuart I. and Gubner, Rolf and Watkin, Elizabeth L.J. and Ginige, Maneesha P. and Kaksonen, Anna H. and Heidersbach, Krista. 2014. Filtration–UV irradiation as an option for mitigating the risk of microbiologically influenced corrosion of subsea construction alloys in seawater. Corrosion Science. 79: pp. 89-99.
    Source Title
    Corrosion Science
    DOI
    10.1016/j.corsci.2013.10.030
    ISSN
    0010-938X
    Remarks

    This is the author’s version of a work that was accepted for publication in the Journal, Corrosion Science. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in the Journal, Corrosion Science, Volume 79, February 2014, Pages 89–99. http://doi.org/10.1016/j.corsci.2013.10.030

    URI
    http://hdl.handle.net/20.500.11937/47609
    Collection
    • Curtin Research Publications
    Abstract

    The effect of filtration-UV irradiation of seawater on the biofilm activity on several offshore structural alloys was evaluated in a continuous flow system over 90 days. Biofilms ennobled the electrode potential by +400–500 mV within a few days of exposure to raw untreated seawater. Filtration-UV irradiation of the seawater delayed the ennoblement of the steels for up to 40 days and lowered localized corrosion rates in susceptible alloys. Ennobling biofilms were composed of microbial cells, diatoms and extracellular polymeric substances and the bacterial community in biofilms was affected by both the alloy composition and seawater treatment.

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