Sonochemical degradation of endocrine disrupting chemicals 17β-estradiol and 17α-ethinylestradiol in water and wastewater

Augustine O. Ifelebuegu, J. Onubogu, Eaodoin Joyce, Timothy J. Mason

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    11 Citations (Scopus)

    Abstract

    The sonochemical degradation of 17β-estradiol (E2) and 17α-ethinylestradiol (EE2) in water and wastewater was investigated at ultrasonic frequency of 850 kHz. The effects of pH, initial concentrations, temperature, power and dissolved organic carbon were examined. The results obtained indicated that the rate of ultrasonic degradation of E2 and EE2 in water and wastewater is influenced by the pH, power, air sparging and the dissolved organic content of the aqueous solutions. Mass degradation rates of E2 and EE2 per kW ranged from 1.7 to 4.0 mg kW−1 at varying process parameters. The degradation process followed the pseudo-second-order kinetic model with rate constant of 1.71 × 10−2 min−1 at 25 °C. The value for activation energy (E a = 15.21 kJ mol−1) obtained from Arrhenius-type plot, indicated that the ultrasonic degradation of steroid hormones is thermodynamically feasible, and does not progress only on radical reactions but other intermediate reaction processes. In wastewater, the higher dissolved organic carbon significantly reduced the effectiveness of degradation of the E2 and EE2 showing that ultrasound treatment will be more effective as a tertiary treatment option in wastewater applications.
    Original languageEnglish
    Pages (from-to)1-8
    JournalInternational Journal of Environmental Science and Technology
    Volume11
    Issue number1
    DOIs
    Publication statusPublished - 2014

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    Endocrine Disruptors
    endocrine-disrupting chemicals
    Ethinyl Estradiol
    Waste Water
    wastewater
    estradiol
    Estradiol
    Wastewater
    Ultrasonics
    Degradation
    degradation
    Water
    ultrasonics
    Carbon
    water
    Organic carbon
    dissolved organic carbon
    air sparging
    Steroid hormones
    Reaction intermediates

    Bibliographical note

    The full text of this item is not available from the repository.
    The final publication is available at www.springerlink.com.

    Keywords

    • ultrasound
    • degradation
    • estrogens
    • activation energy
    • kinetics

    Cite this

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    abstract = "The sonochemical degradation of 17β-estradiol (E2) and 17α-ethinylestradiol (EE2) in water and wastewater was investigated at ultrasonic frequency of 850 kHz. The effects of pH, initial concentrations, temperature, power and dissolved organic carbon were examined. The results obtained indicated that the rate of ultrasonic degradation of E2 and EE2 in water and wastewater is influenced by the pH, power, air sparging and the dissolved organic content of the aqueous solutions. Mass degradation rates of E2 and EE2 per kW ranged from 1.7 to 4.0 mg kW−1 at varying process parameters. The degradation process followed the pseudo-second-order kinetic model with rate constant of 1.71 × 10−2 min−1 at 25 °C. The value for activation energy (E a = 15.21 kJ mol−1) obtained from Arrhenius-type plot, indicated that the ultrasonic degradation of steroid hormones is thermodynamically feasible, and does not progress only on radical reactions but other intermediate reaction processes. In wastewater, the higher dissolved organic carbon significantly reduced the effectiveness of degradation of the E2 and EE2 showing that ultrasound treatment will be more effective as a tertiary treatment option in wastewater applications.",
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    AU - Ifelebuegu, Augustine O.

    AU - Onubogu, J.

    AU - Joyce, Eaodoin

    AU - Mason, Timothy J.

    N1 - The full text of this item is not available from the repository. The final publication is available at www.springerlink.com.

    PY - 2014

    Y1 - 2014

    N2 - The sonochemical degradation of 17β-estradiol (E2) and 17α-ethinylestradiol (EE2) in water and wastewater was investigated at ultrasonic frequency of 850 kHz. The effects of pH, initial concentrations, temperature, power and dissolved organic carbon were examined. The results obtained indicated that the rate of ultrasonic degradation of E2 and EE2 in water and wastewater is influenced by the pH, power, air sparging and the dissolved organic content of the aqueous solutions. Mass degradation rates of E2 and EE2 per kW ranged from 1.7 to 4.0 mg kW−1 at varying process parameters. The degradation process followed the pseudo-second-order kinetic model with rate constant of 1.71 × 10−2 min−1 at 25 °C. The value for activation energy (E a = 15.21 kJ mol−1) obtained from Arrhenius-type plot, indicated that the ultrasonic degradation of steroid hormones is thermodynamically feasible, and does not progress only on radical reactions but other intermediate reaction processes. In wastewater, the higher dissolved organic carbon significantly reduced the effectiveness of degradation of the E2 and EE2 showing that ultrasound treatment will be more effective as a tertiary treatment option in wastewater applications.

    AB - The sonochemical degradation of 17β-estradiol (E2) and 17α-ethinylestradiol (EE2) in water and wastewater was investigated at ultrasonic frequency of 850 kHz. The effects of pH, initial concentrations, temperature, power and dissolved organic carbon were examined. The results obtained indicated that the rate of ultrasonic degradation of E2 and EE2 in water and wastewater is influenced by the pH, power, air sparging and the dissolved organic content of the aqueous solutions. Mass degradation rates of E2 and EE2 per kW ranged from 1.7 to 4.0 mg kW−1 at varying process parameters. The degradation process followed the pseudo-second-order kinetic model with rate constant of 1.71 × 10−2 min−1 at 25 °C. The value for activation energy (E a = 15.21 kJ mol−1) obtained from Arrhenius-type plot, indicated that the ultrasonic degradation of steroid hormones is thermodynamically feasible, and does not progress only on radical reactions but other intermediate reaction processes. In wastewater, the higher dissolved organic carbon significantly reduced the effectiveness of degradation of the E2 and EE2 showing that ultrasound treatment will be more effective as a tertiary treatment option in wastewater applications.

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