Phosphate Recovery by Reactive Crystallization of Magnesium Ammonium Phosphate

Application to Wastewater

Izumi Hirasawa, Hiroyuki Nakagawa, Osamu Yosikawa, Masanori Itoh

    Research output: Contribution to journalArticle

    9 Citations (Scopus)

    Abstract

    In this study reactive crystallization of magnesium ammonium phosphate (MAP) has been studied experimentally in a batch agitated crystallizer. Operating conditions for selective crystallization of MAP were obtained. Under these conditions, batch crystallization experiments were performed, to obtain the behavior of concentration decrease in phosphate and magnesium ions, by changing the initial Mg/P ratio. It was recognized that the concentration decrease pattern affected the properties of produced crystals. A new process for removing ammonium and phosphate ions using a crystallization process was proposed for application to wastewater from sludge treatment processes.

    Original languageEnglish
    Pages (from-to)267-276
    Number of pages10
    JournalACS Symposium Series
    Volume667
    Publication statusPublished - 1997

    Fingerprint

    Crystallization
    Magnesium
    Phosphates
    Wastewater
    Recovery
    Ions
    Crystallizers
    Crystals
    ammonium phosphate
    Experiments

    ASJC Scopus subject areas

    • Chemistry(all)

    Cite this

    Phosphate Recovery by Reactive Crystallization of Magnesium Ammonium Phosphate : Application to Wastewater. / Hirasawa, Izumi; Nakagawa, Hiroyuki; Yosikawa, Osamu; Itoh, Masanori.

    In: ACS Symposium Series, Vol. 667, 1997, p. 267-276.

    Research output: Contribution to journalArticle

    Hirasawa, Izumi ; Nakagawa, Hiroyuki ; Yosikawa, Osamu ; Itoh, Masanori. / Phosphate Recovery by Reactive Crystallization of Magnesium Ammonium Phosphate : Application to Wastewater. In: ACS Symposium Series. 1997 ; Vol. 667. pp. 267-276.
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