Abstract
The complete mineralization of the conazole fungicide triadimefon in water at pH 3 using electrochemical advanced oxidation processes, electro-Fenton and photo electro-Fenton, was achieved. The electrochemical system consisted of a one-compartment electrochemical cell of 100 mL provided with a glassy carbon mesh electrode (cathode) and a concentric outer steel mesh as anode. The electrolysis was realized at constant current. The most remarkable features are as follows: (1) photo electro-Fenton process reaches a complete mineralization of triadimefon after 2 h of electrolysis with respect to electro-Fenton method; and (2) 4-chlorophenol, hydroquinone, carboxylic acids, and inorganic ions were detected as intermediates of degradation processes, which end with the complete mineralization of triadimefon to CO2 + H2O. (3) A reaction pathway for the oxidation of triadimefon fungicide by hydroxyl radicals that accounts for almost all detected intermediates is proposed.
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We are grateful to DICYT–USACh and FONDECYT Grant 11090275 for financial support.
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Salazar, R., Ureta-Zañartu, M.S. Mineralization of Triadimefon Fungicide in Water by Electro-Fenton and Photo Electro-Fenton. Water Air Soil Pollut 223, 4199–4207 (2012). https://doi.org/10.1007/s11270-012-1184-7
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DOI: https://doi.org/10.1007/s11270-012-1184-7