Influence of simulated solar radiation on micropollutant removal with ferrioxalate-assisted photo-Fenton

AGUSTINA V. SCHENONE; BARBARA N. GIMÉNEZ; LEANDRO O. CONTE; ORLANDO M. ALFANO

Cusco

Congreso; 5th Iberoamerican Conference on Advanced Oxidation Technologies; 2022

This study is focused on the degradation of paracetamol (PTC) at a concentration usually detected in wastewater effluents (µg L-1), by photo-Fenton at near neutral pH, using ferrioxalate as iron source and simulated solar radiation. To this aim, 500 µg L-1 was treated with low concentration of Fenton reagents (Fe= 1 mg L-1 and H2O2=2.36 mg L-1), and the incident irradiation was evaluated in three levels: OFF (Fenton), LOW (31.6 W m-2) and HIGH (57.5 W m-2). PCT was monitored during the reaction by the aid of an optimized solid phase extraction technique followed by HPLC-UV/Vis. The lowest PCT conversion after 90 min of reaction was obtained in the dark reaction, meanwhile 94.4% was achieved with the HIGH radiation level, highlighting the beneficial effect of radiation on the system. In addition, the value of oxidant consumption obtained for Fenton process was higher than the corresponding values observed for photo-Fenton system.