Creation of controlled manganese and zinc compounds by reactive crystallization

Yoshiharu Shimizu, Izumi Hirasawa

    Research output: Contribution to journalArticle

    1 Citation (Scopus)

    Abstract

    In this article, manganese and zinc compound formation via reactive crystallization has been summarized. In this process, the metal sulfate solution was reacted with the sodium carbonate solution according to the double-jet method. Some particle properties such as crystal size, shape, agglomeration rate, and metal ion concentration in the effluent have been examined by controlling the pH in the initial reaction field, the concentration of the metal ions in the stock solution, or the flow rate of the solution. The size of formed manganese carbonate particles increases with an increase in the feeding speed and the metal ion concentration in stock solution. This is due to the fact that particle growth is strongly affected by the metal ion supersaturation in the reaction solution. Meanwhile, the manganese carbonate particle recovery rate increases with an increase in the feeding rate and a decrease in the metal ion concentration. The size of zinc oxide particles formed continuously changes with the initial pH. The above experiments indicate that the recovered crystal size and surface roughness, as well as the metal ion recovery rate and monodispersion, are controlled, to some extent, by regulating the reaction conditions.

    Original languageEnglish
    Pages (from-to)342-346
    Number of pages5
    JournalJournal of Chemical Engineering of Japan
    Volume46
    Issue number5
    DOIs
    Publication statusPublished - 2013

    Fingerprint

    Manganese Compounds
    Zinc Compounds
    Manganese compounds
    Zinc compounds
    Crystallization
    Metal ions
    Carbonates
    Manganese
    Zinc Oxide
    Recovery
    Crystals
    Supersaturation
    Zinc oxide
    Sulfates
    Effluents
    Agglomeration
    Surface roughness
    Metals
    Sodium
    Flow rate

    Keywords

    • Metal ions
    • Operation condition
    • Reactive crystallization

    ASJC Scopus subject areas

    • Chemical Engineering(all)
    • Chemistry(all)

    Cite this

    Creation of controlled manganese and zinc compounds by reactive crystallization. / Shimizu, Yoshiharu; Hirasawa, Izumi.

    In: Journal of Chemical Engineering of Japan, Vol. 46, No. 5, 2013, p. 342-346.

    Research output: Contribution to journalArticle

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