Removal of estrogens by electrochemical oxidation process

Vo Huu Cong, Sota Iwaya, yutaka Sakakibara

    Research output: Contribution to journalArticle

    10 Citations (Scopus)

    Abstract

    Treatments of estrogens such as Estrone (E1), Estradiol (E2) and Ethinylestradiol (EE2) were conducted using an electrolytic reactor equipped with multi-packed granular glassy carbon electrodes. Experimental results showed that E1, E2 and EE2 were oxidized in the range of 0.45-0.85 V and were removed through electro-polymerization. Observed data from continuous experiments were in good agreement with calculated results by a mathematical model constructed based on mass transfer limitation. In continuous treatment of trace estrogens (1 μg/L), 98% of E1, E2 and EE2 were stably removed. At high loading rate (100 μg/L), removal efficiency of E1 was kept around 74%-88% for 21 days, but removal efficiency reduced due to passivation of electrodes. However, removal efficiency was recovered after electrochemical regeneration of electrodes in presence of ozone. Electric energy consumption was observed in the range of 1-2 Wh/m3. From these results, we concluded that the present electrochemical process would be an alternative removal of estrogens.

    Original languageEnglish
    Pages (from-to)1355-1360
    Number of pages6
    JournalJournal of Environmental Sciences (China)
    Volume26
    Issue number6
    DOIs
    Publication statusPublished - 2014 Jun 1

    Fingerprint

    Electrochemical oxidation
    Ethinyl Estradiol
    Estrogens
    oxidation
    Estradiol
    electrode
    Electrodes
    Electropolymerization
    Estrone
    Ozone
    Glassy carbon
    Passivation
    polymerization
    mass transfer
    Energy utilization
    Mass transfer
    regeneration
    ozone
    Mathematical models
    removal

    Keywords

    • Electro-polymerization
    • Electrode regeneration
    • Endocrine disrupting chemicals
    • Estrogen
    • Granular reactor

    ASJC Scopus subject areas

    • Environmental Engineering
    • Environmental Science(all)
    • Environmental Chemistry

    Cite this

    Removal of estrogens by electrochemical oxidation process. / Cong, Vo Huu; Iwaya, Sota; Sakakibara, yutaka.

    In: Journal of Environmental Sciences (China), Vol. 26, No. 6, 01.06.2014, p. 1355-1360.

    Research output: Contribution to journalArticle

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