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Degradation of Bisphenol A in an Aqueous Solution by a Photo-Fenton-Like Process Using a UV KrCl Excilamp

Author

Listed:
  • Denis Aseev

    (Baikal Institute of Nature Management of Siberian Branch of Russian Academy of Sciences, 6, Sakhyanovoy St., 670047 Ulan-Ude, Russia)

  • Agniya Batoeva

    (Baikal Institute of Nature Management of Siberian Branch of Russian Academy of Sciences, 6, Sakhyanovoy St., 670047 Ulan-Ude, Russia)

  • Marina Sizykh

    (Baikal Institute of Nature Management of Siberian Branch of Russian Academy of Sciences, 6, Sakhyanovoy St., 670047 Ulan-Ude, Russia)

  • Daniil Olennikov

    (Institute of General and Experimental Biology of Siberian Branch of Russian Academy of Sciences, 6, Sakhyanovoy St., 670047 Ulan-Ude, Russia)

  • Galina Matafonova

    (Baikal Institute of Nature Management of Siberian Branch of Russian Academy of Sciences, 6, Sakhyanovoy St., 670047 Ulan-Ude, Russia)

Abstract

Bisphenol A (BPA), a precursor to important plastics, is regarded as a common aquatic micropollutant with endocrine-disrupting activity. In the present study, we explored the capability of a UV KrCl excilamp (222 nm) to degrade BPA by a photo-Fenton-like process using persulfate under flow-through conditions. The first-order rate constants of degradation were obtained and the mineralization of dissolved organic carbon (DOC) was estimated. The results showed complete BPA degradation and high DOC mineralization (70–97%). A comparative analysis of degradation rates and DOC removal in the examined systems (UV, Fe 2+ /S 2 O 8 2− , UV/S 2 O 8 2− and UV/Fe 2+ /S 2 O 8 2− ) revealed a significant synergistic effect in the photo-Fenton-like system (UV/Fe 2+ /S 2 O 8 2− ) without the accumulation of toxic intermediates. This indicated that the BPA was oxidized via the conjugated radical chain mechanism, which was based on the photo-induced and catalytic processes involving HO • and SO 4 −• radicals. The primary intermediates of BPA degradation in the UV/Fe 2+ /S 2 O 8 2− system were identified by HPLC/MS and the oxidation pathway was proposed. The high performance of the photo-Fenton-like process employing a quasi-monochromatic UV radiation of a KrCl excilamp offers promising potential for an efficient removal of such micropollutants from aqueous media.

Suggested Citation

  • Denis Aseev & Agniya Batoeva & Marina Sizykh & Daniil Olennikov & Galina Matafonova, 2021. "Degradation of Bisphenol A in an Aqueous Solution by a Photo-Fenton-Like Process Using a UV KrCl Excilamp," IJERPH, MDPI, vol. 18(3), pages 1-11, January.
    • Handle: RePEc:gam:jijerp:v:18:y:2021:i:3:p:1152-:d:488718
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    References listed on IDEAS

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    1. Jong-Joo Kim & Surendra Kumar & Vinay Kumar & Yun-Mi Lee & You-Sam Kim & Vijay Kumar, 2019. "Bisphenols as a Legacy Pollutant, and Their Effects on Organ Vulnerability," IJERPH, MDPI, vol. 17(1), pages 1-18, December.
    2. Francesca Gorini & Elisa Bustaffa & Alessio Coi & Giorgio Iervasi & Fabrizio Bianchi, 2020. "Bisphenols as Environmental Triggers of Thyroid Dysfunction: Clues and Evidence," IJERPH, MDPI, vol. 17(8), pages 1-46, April.
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    Cited by:

    1. Bingbing Hu & Peng Zhang & Hui Liu & Songhu Yuan, 2022. "Quantification of the Influence of Citrate/Fe(II) Molar Ratio on Hydroxyl Radical Production and Pollutant Degradation during Fe(II)-Catalyzed O 2 and H 2 O 2 Oxidation Processes," IJERPH, MDPI, vol. 19(19), pages 1-14, October.

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