Effect of air pressure on the electro-generation of H2O2 and the abatement of organic pollutants in water by electro-Fenton process

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Abstract

The electro-generation of H2O2 and the abatement of the model organic pollutant Acid Orange 7 (AO7) in water by an electro-Fenton process were perfomed under moderate air pressures (up to 11 bar) for the first time. An increase of the pressure gave rise to a drastic enhancement of the concentration of hydrogen peroxide. At 11 bar, the reduction of oxygen gave rise at a graphite cathode to a concentration of H2O2 of about 12 mM, about one order of magnitude higher than that achieved at atmospheric pressure, as a result of mass transport intensification. Similarly, for electro-Fenton, a drastic increase of the abatement of TOC was achieved upon increasing the air pressure. The effect of the current density was also investigated in detail.
Lingua originaleEnglish
pagine (da-a)775-780
Numero di pagine6
RivistaElectrochimica Acta
Stato di pubblicazionePublished - 2015

All Science Journal Classification (ASJC) codes

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  • ???subjectarea.asjc.1600.1603???

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