Analysis of the Degradation of M-Cresol with Fe/Ac in Catalytic Wet Peroxide Oxidation Enhanced by Swirl Flow

Abstract

Catalytic wet peroxide oxidation(CWPO) enhanced by swirl flow (SF-CWPO) was developed for the first time to explore the degradation of m-cresol in 3%iron/activated carbon catalysed Fenton reaction. Under the conditions of catalyst dosage of 0.6 g/L, H 2 O 2 dosage of 1.5 ml/L, pH = 6 and reaction time of 20 min, the degradation rate of m-cresol and total organic carbonin 100 mg/L m-cresol solution was 81.5% and 82%, respectively. The reaction speed in the SF-CWPO system with an independently designed cyclone reactor was two times faster than the traditional CWPO systems. In addition, via liquid chromatography-mass spectrometry analysis of the degradation product, the possible degradation pathway for m-cresol was proposed. The proposed SF-CWPO can potentially be an efficient and economical method to treat organic pollutants in wastewaters.

Keywords: wastewater, AOPs, catalytic wet peroxide oxidation, swirl flow, Integrated equipment