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Oxidative of organic compounds by oxysulfur radicals in the presence of transition metal ions and sulfite

Abstract : In recent years, more and more refractory and toxic organic compounds are detected in wastewater. Many of these organic pollutants can hardly be degraded by conventional water treatments. Sulfate radical based advanced oxidation process (SR-AOPs), have emerged as a promising method in the field of oxidative decontamination of polluted water. Past studies focused on this SR-AOPs with peroxydisulfate (PS) or peroxymonosulfate (PMS) as oxidants, especially the ‘transition metal + oxidants’ (i.e. Fe(II)/PS system, Ni(II)/PMS system and Co(II)/PMS system), which has been confirmed that SO4·− has advantages over HO in the decontamination of wastewater containing organic pollutants. In this PhD thesis, oxysulfur radicals including sulfite radical SO3·−, sulfate radical SO4·−, peroxymonosulfate radical SO5·− produced by transition metal ions such as Cr(VI), Co(II), Fe(III) activated sulfite were used to degrade organic compounds. The removal efficiency, the oxidation mechanism were examined, and and the role of sulfur species were elucidated.
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  • HAL Id : tel-02621097, version 1

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Yanan Yuan. Oxidative of organic compounds by oxysulfur radicals in the presence of transition metal ions and sulfite. Theoretical and/or physical chemistry. Université Clermont Auvergne; Université de Wuhan (Chine), 2018. English. ⟨NNT : 2018CLFAC052⟩. ⟨tel-02621097⟩

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