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Effect of humic acids on the Fenton degradation of phenol
Authors:Email author" target="_blank">Davide?VioneEmail author  Fabrizio?Merlo  Valter?Maurino  Claudio?Minero
Institution:(1) Dipartimento di Chimica Analitica, Università di Torino, Via P. Giuria 5, 10125 Torino, Italy;(2) Dipartimento di Scienza dei Materiali e di Ingegneria Chimica, Politecnico di Torino, C.so Duca degli Abruzzi 24, , 10129 Torino, Italy
Abstract:We show that the degradation of phenol by Fe(III) and hydrogen peroxide is faster in the presence of humic acids. This is most likely due to faster reduction of Fe(III)-humate complexes by H2O2/HO2·/O2–· when compared with Fe(III)-H2O complexes. The fact that humic acids, a major class of naturally occurring compounds, favour the Fenton reaction has great relevance in the field of water and soil decontamination, where organic compounds usually have a negative effect. Furthermore, it adds insight into the self-depuration processes of natural aquifers.
Keywords:Water  Soil  Remediation  Advanced oxidation processes  Fe(II)  Fe(III)  Hydrogen peroxide  Natural waters  Natural organic matter  Pollutant degradation
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