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    Factors influencing corrosion of metal pipes in soils

    Access Status
    Fulltext not available
    Authors
    Wasim, M.
    Shoaib, S.
    Mujawar, Mubarak
    Inamuddin
    Asiri, A.
    Date
    2018
    Type
    Journal Article
    
    Metadata
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    Citation
    Wasim, M. and Shoaib, S. and Mujawar, M. and Inamuddin and Asiri, A. 2018. Factors influencing corrosion of metal pipes in soils. Environmental Chemistry Letters. 16 (3): pp. 861-879.
    Source Title
    Environmental Chemistry Letters
    DOI
    10.1007/s10311-018-0731-x
    ISSN
    1610-3653
    School
    Curtin Malaysia
    URI
    http://hdl.handle.net/20.500.11937/66843
    Collection
    • Curtin Research Publications
    Abstract

    Deterioration of buried metal pipes due to corrosive soil environment is a major issue worlwide. Although failures of buried pipe due to corrosive soil is an old problem, yet such failures are still uncontrollable even with the application of advanced corrosion protection technologies. Therefore, understanding factors causing corrosion of buried pipes is necessary. This article reviews factors causing corrosion of buried pipes in soils. Factors include moisture content, soil resistivity, pH, dissolved oxygen, temperature and microbial activity. Moreover, we discuss the influence of manufacturing method and the comparison of corrosion behaviour of cast iron, ductile and mild steel pipes. We found that corrosion rate of pipes increases with moisture contents up to the critical moisture value. Although pH affects corrosion, there is no relationship between corrosion and pH and the corrosion rates of buried pipes are inversely proportional to soil resistivity. Soils containing more organic matter show high resistivity. Dissolved oxygen in soil develops differential cell which accelerates corrosion of metallic pipe. Different types of bacteria present in soil develop biofilms on metallic pipes, which deteriorates pipes with time.

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