Phosphate removal and recovery by a novel electrolytic process

yutaka Sakakibara, H. Nakajima

    Research output: Contribution to journalArticle

    1 Citation (Scopus)

    Abstract

    The possibility of removing and recovering phosphate from wastewater by a novel electrolytic process was investigated experimentally. In the process, ion electrodes are immersed in synthetic wastewater and direct current (DC) is applied to coagulate phosphate on the surface of the anode. Experimental results demonstrated that at electric current densities ranged from 0.001 to 0.1 mA/cm2, phosphate was removed and recovered as phosphate-rich aggregates formed on the anode surface. Decreases in phosphate concentration at bulk liquid were in fairly good agreement with the amounts of phosphate in the aggregates. Moreover, the removal rate of phosphate was increased with increasing electric current. In addition, as heavy metal anions such as Cu2+ deposit on the counter electrode (cathode), it was thought that relatively pure phosphate could be obtained by the present process.

    Original languageEnglish
    Pages (from-to)147-152
    Number of pages6
    JournalWater Science and Technology
    Volume46
    Issue number11-12
    Publication statusPublished - 2002

    Fingerprint

    Phosphates
    phosphate
    Recovery
    Electric currents
    Anodes
    electrode
    Wastewater
    wastewater
    Electrodes
    phosphate removal
    density current
    Heavy metals
    anion
    Cathodes
    Current density
    Negative ions
    Deposits
    heavy metal
    liquid
    ion

    Keywords

    • Advanced treatment
    • Coagulation
    • Electric current
    • Electrolytic treatment
    • Iron electrode
    • Phosphate
    • Recycling
    • Wastewater

    ASJC Scopus subject areas

    • Water Science and Technology

    Cite this

    Phosphate removal and recovery by a novel electrolytic process. / Sakakibara, yutaka; Nakajima, H.

    In: Water Science and Technology, Vol. 46, No. 11-12, 2002, p. 147-152.

    Research output: Contribution to journalArticle

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