Kinetic Model of Photo-Fenton Degradation of Paracetamol in an Annular Reactor: Main Reaction Intermediates and Cytotoxicity Studies

BÁRBARA N. GIMÉNEZ; AGUSTINA V. SCHENONE; ALFANO, O.M.; CONTE, L.O.; GRAELLS, MOISÈS; MONTSERRAT PÉREZ-MOYA

Turin

Congreso; 11 th European Conference on Solar Chemistry and Photocatalysis: Environmental Applications (SPEA11); 2022

Universitá degli Studi di Torino

A kinetic model derived from a simplified reaction sequence is proposed for the photo-Fenton degradation of paracetamol (PCT) . The radiation field inside the pilot-plant photoreactor was considered through the Local Volumetric Rate of Photon Absorption (LVRPA). Kinetic parameters were estimated, and the validated kinetic model was used to predict temporal variations of the concentrations of PCT, H2O2, hydroquinone (HQ) and 1,4-benzoquinone (BQ) (main reaction intermediates). The root mean square errors (RMSE) were 3.78  10-2, 1.11, 6.75  10-3, 5.94  10-3 mM for PCT, HP, HQ and BQ, respectively, showing a good agreement between experimental and predicted data. A cytotoxicity test proved that the photo-Fenton process is effective in generating a non-toxic effluent, with the appropriate operating variables.