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Removal of organophosphorus pesticides from water by electrogenerated Fenton's reagent

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Abstract

Aqueous solutions of organophosphorus pesticides were completely mineralized via in-situ generated hydroxyl radicals (HO·) by the Electro-Fenton process. Formation of Fenton's reagent (H2O2, Fe2+) was carried out by simultaneous reduction of O2 and Fe3+ on carbon cathode in acidic medium. The electrochemistry combined with Fenton's reagent provides an excellent way to continuously produce the hydroxyl radical, a powerful oxidant. We demonstrate the efficiency of the Electro-Fenton process to degrade three organophosphorus insecticides: malathion, parathion ethyl and tetra-ethyl-pyrophosphate (TEPP). Degradation kinetics and removals of chemical oxygen demand (COD) have been investigated. Here we show that the mineralization efficiency was over 80% for three organophosphorus pesticides.

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Authors and Affiliations

  1. Equipe chimie de l'environnement, Laboratoire des Géomatériaux, CNRS FRE 2455, Université de Marne-La-Vallée, Bât IFI, 5 Bd Descartes, Champs-Sur-Marne, 77454, Marne-La-Vallée, France

    Elodie Guivarch, Nihal Oturan & Mehmet A. Oturan

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  1. Elodie Guivarch
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  2. Nihal Oturan
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  3. Mehmet A. Oturan
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Correspondence to Mehmet A. Oturan.

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Guivarch, E., Oturan, N. & Oturan, M.A. Removal of organophosphorus pesticides from water by electrogenerated Fenton's reagent. Environ Chem Lett 1, 165–168 (2003). https://doi.org/10.1007/s10311-003-0029-4

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