Electrodeionization 3: The removal nickel from dilute solution

P.B. Spoor, L. Koene, W.R. Veen, ter, L.J.J. Janssen

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    42 Citations (Scopus)


    The removal of nickel ions from dilute solutions using a process that combines an ion-exchange bed with electrodialysis has been studied. The main aspects include: the concentration of nickel ions in the diluate, the voltage over the cell and the current density distribution along the ion-exchange bed. The current density distribution provides insight into the state of the bed as it is simultaneously loaded with Ni2+ and regenerated with an electric potential difference applied perpendicular to it. A simple model is used to describe the state of the bed and the quantity of nickel removed from it as a function of time. Under specific conditions the precipitation of metal hydroxides is observed in the compartment containing the ion-exchange bed. The results show that hydroxide precipitation is related to the nickel concentration in solution and the electric potential gradient across the bed.
    Original languageEnglish
    Pages (from-to)1-10
    JournalJournal of Applied Electrochemistry
    Issue number1
    Publication statusPublished - 2002


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