Influence of the Chemical Interactions on the Removal Rate of Different Salts in Electrokinetic Desalination Processes

Juan Manuel Paz-Garcia, Björn Johannesson, Lisbeth M. Ottosen, A.B. Ribeiro, J.M. Rodriguez-Maroto

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    Abstract

    Electrokinetic desalination techniques have been successfully applied for the prevention of salt-induced deterioration problems of masonry and other construction materials. A mathematical model for electrochemical desalination treatments is described, based on the Poisson-Nernst-Planck system of equations and accounting for the chemical interactions between the species in the pore solution and the solid matrix. Due to their high abundance in the natural environment, chlorides, nitrates and sulfates are considered the main ions responsible to the salt decay processes in buildings materials and sculptures. Simulations of the desalination treatment of brick samples contaminated with these target contaminants are shown. The influence of the chemical interactions on the efficiency is highlighted in the results.
    Original languageEnglish
    Title of host publicationSalt Weathering on buildings and Stone Sculptures
    PublisherUniversity of Cyprus
    Publication date2011
    Pages373-380
    ISBN (Print)978-9963-7355-1-8
    Publication statusPublished - 2011
    EventInternational Conference Salt Weathering on Buildings and Stone Sculptures 2011 - Limassol, Cyprus
    Duration: 19 Oct 201122 Oct 2011

    Conference

    ConferenceInternational Conference Salt Weathering on Buildings and Stone Sculptures 2011
    Country/TerritoryCyprus
    CityLimassol
    Period19/10/201122/10/2011

    Keywords

    • Chemical equilibrium
    • Electrokinetic desalination
    • Poisson-Nernst-Planck system
    • Reactive transport
    • Extent of the reaction

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