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  • Aerobic degradation of tetramethyl bisphenol F (TMBPF) with activated sludge [Elektronski vir] : kinetics and biotransformation products
    Kovačič, Ana, kemičarka ...
    This study investigated the bio-degradation kinetics of tetramethyl bisphenol F (TMBPF), a non-estrogenic alternative to bisphenol A (BPA). Batch biotransformation experiments were performed whereby ... samples were inoculated with activated sludge and analysed using liquid chromatography-Orbitrap-tandem mass spectrometry (LC-Orbitrap-MS) utilising two non-targeted workflows (commercial and freely available online) for biotransformation products (BTP) identification. The degradation of TMBPF followed single first-order reaction kinetics and depended on the initial concentration (ci) with faster degradation -kt = 0.16, (half-life = 4.4 days) at lower concentrations ci = 0.1 mg L−1, compared with -kt = 0.02 (half-live = 36.4 days) at ci = 10.0 mg L−1. After 18 days, only 8% of the original TMBPF remained at the lowest tested concentration (0.1 mg L−1). Twelve BTPs were identified, three of which were workflow and one condition-specific. The highest relative quantities of BTPs were observed in nutrient-mineral and mineral media after ten days, while after 14 days, 36 and 31% of TMBPF (ci = 1 mg L−1) remained in the nutrient-mineral and mineral media, respectively. Also, the kinetics of TMBPF and its BTPs were the same with and without an additional carbon source. A newly proposed biodegradation pathway for TMBPF involves cleavage of the methylene bridge, hydroxylation with further oxidation, sulphation, nitrification, nitro reduction with further oxidation, acetylation, and glycine conjugation, providing a deeper insight into the fate of TMBPF during biological wastewater treatment.
    Vir: Environmental research [Elektronski vir]. - ISSN 1096-0953 (Vol. 227, [article no.] 115790, Jun. 2023, str. 1-10)
    Vrsta gradiva - e-članek ; neleposlovje za odrasle
    Leto - 2023
    Jezik - angleški
    COBISS.SI-ID - 147490051

    Povezava(-e):

    https://www.sciencedirect.com/science/article/pii/S0013935123005820?dgcid=author
    DOI

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