Through the application of negative reduction potential significant reduction of manganic and iron oxides in the ocean manganese nodules can be achieved, liberating the occluded copper, nickel and cobalt for easy dissolution in an acid medium. Electroleaching and electrobioleaching of ocean manganese nodules in the presence of Thiobacillus ferrooxidans and Thiobacillus thiooxidans at the above negative applied dc potentials resulted in significant dissolution of copper, nickel and cobalt in 1 M H2SO4. The role of galvanic interactions in the bioleaching of ocean manganese nodules in the presence of T. thiooxidans is also discussed.


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    Title :

    Development of a clean bioelectrochemical process for leaching of ocean manganese nodules


    Contributors:

    Published in:

    Minerals Engineering ; 15 , 1-2 ; 103-106


    Publication date :

    2002


    Size :

    4 Seiten, 5 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English








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