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    Investigation into the effects of phosphonic inhibitors on the formation of calcium sulfate scales

    Access Status
    Fulltext not available
    Authors
    Hoang, T.
    Ang, Ming
    Rohl, Andrew
    Date
    2011
    Type
    Journal Article
    
    Metadata
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    Citation
    Hoang, T. and Ang, M. and Rohl, A. 2011. Investigation into the effects of phosphonic inhibitors on the formation of calcium sulfate scales. Desalination and Water Treatment. 29 (1-3): pp. 294-301.
    Source Title
    Desalination and Water Treatment
    DOI
    10.5004/dwt.2011.2188
    ISSN
    1944-3994
    School
    Department of Chemical Engineering
    URI
    http://hdl.handle.net/20.500.11937/12283
    Collection
    • Curtin Research Publications
    Abstract

    The effects of several phosphonic additives on the formation of calcium sulfate scale on metal surface in a flow system were investigated thoroughly using multiple pipe flow system. Their chemical structure, concentration and run time are to be the main factors that influence the inhibitory capability of these anti-scalants. The relationships between these factors and the scale rate were established. The Langmuir adsorption isotherm is applied to predict the critical concentrations above which complete inhibition of scaling will occur. The inhibition efficiency order of the investigated organic additives is found as follows:EDTP > NTMP > NDPA > HEDP> NPDA, which corresponds to the number of phosphonate groups that the additives possess. © 2011 Desalination Publications. All rights reserved.

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