Oxidative and energetic efficiency of different electrochemical oxidation processes for chloroanilines abatement in aqueous medium |
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Authors: | Meinero Samuele Zerbinati Orfeo |
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Institution: | Dipartimento di Scienze dell'Ambiente e della Vita, Università del Piemonte Orientale, via Bellini 25/g, I-15100 Alessandria, Italy. |
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Abstract: | The oxidative efficiency and energy consumption, in the degradation of chloroanilines by anodic oxidation, indirect oxidation with electrogenerated hydrogen peroxide and electro-Fenton have been compared, using a laboratory system driven by a LabVIEW virtual controller. Solutions were oxidized in an undivided cell, where H(2)O(2) was generated electrochemically by reduction of atmospheric oxygen bubbled at a carbon cloth cathode. The electro-Fenton process showed the best degradation power, in terms of efficiency of removal and energy consumption. This process was applied to the purification of a solution obtained by washing a polluted soil. Under laboratory conditions, electro-Fenton removed 75% COD of this wastewater with a specific energy consumption of 0.3kWh per gram of COD, corresponding to 41.8kWhm(-3). |
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