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Paracetamol Degradation by Catalyst Enhanced Non-Thermal Plasma Process for a Drastic Increase in the Mineralization Rate

Abstract : In order to remediate the very poor mineralization of paracetamol in water, even when well degraded by using a Non-Thermal Plasma (NTP) process at a very low dissipated power, a plasma-catalyst coupling process was tested and investigated. A homemade glass fiber supported Fe 3+ catalyst was immersed in the liquid to be treated in a Dielectric Barrier Discharge plasma reactor. The plasma-catalysis process, at the same low dissipated power, achieved a mineralization rate of 54% with a full conversion rate of paracetamol at 25 mg L −1 in initial concentration after 60 min treatment, thanks to Fenton-like effects. The synergetic effects of the plasma-catalysis coupling process also improved the Energy Yield by a factor of two. The catalyst before and after use for treatment was characterized by Brunauer-Emmett-Teller and Thermogravimetric analysis. High-Performance Liquid Chromatography was used to measure the concentration of treated solution and to investigate the intermediates. Two of them, namely 1,4-hydroquinone and 1,4-benzoquinone, were formally identified. Some intermediates are presented in this paper as a function of treatment time and their UV absorbance spectra. NTP processes with and without catalyst coupling were compared in terms of acidity, conductivity, and nitrate concentrations in the treated solution.
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https://hal.archives-ouvertes.fr/hal-02920050
Contributeur : Dunpin Hong <>
Soumis le : lundi 24 août 2020 - 13:10:40
Dernière modification le : jeudi 27 août 2020 - 03:22:52
Archivage à long terme le : : mardi 1 décembre 2020 - 17:46:12

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Noussaiba Korichi, Olivier Aubry, Hervé Rabat, Benoît Cagnon, Dunpin Hong. Paracetamol Degradation by Catalyst Enhanced Non-Thermal Plasma Process for a Drastic Increase in the Mineralization Rate. Catalysts, MDPI, 2020, 10 (9), pp.959. ⟨10.3390/catal10090959⟩. ⟨hal-02920050⟩

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