The recovery of important minerals, salt (NaCI) and potassium (K), in a closed system, namely CELSS is discussed. NaCI is needed for humans, but is potentially harmful to plants. Salt is recovered after wet oxidation of urine. Since Na and K have similar chemical and physical properties, their recovery or separation may require sophisticated methods. Na, CI and K ions are separated from other ions by electrodialysis with univalent selective ion-exchange membranes and then NaCI is obtained separately by a crystalization process. Preliminary experiment on crystalization of NaCI-KCl mixed solutions showed a good separation result.


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    Titel :

    Mineral Recovery Systems for Humans in a CELSS


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Ashida, Akira (Autor:in) / Kurokawa, Hideaki (Autor:in) / Nitta, Keiji (Autor:in) / Oguchi, Mitsuo (Autor:in) / Hamano, Nobuo (Autor:in) / Sawa, Toshio (Autor:in)

    Kongress:

    International Conference On Environmental Systems ; 1992



    Erscheinungsdatum :

    01.07.1992




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch






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