Degradación de COP´s mediante fotocatálisis como una alternativa sustentable para el tratamiento de aguas

Abstract

Abstract: Binary photocatalysts of 80%/20% composition of TiO2/clay and ZnO/clay were prepared by exstruction using 7 different natural clays, the raw materials and photocatalysts were characterized by XRD, XRF, density and hardness, The degradation rate of phenol and difenoconazol was evaluated under solar radiation with two photocatalyst loadings of 10g/L and 20g/L, the TiO2/clay (P1M2) photocatalyst 4 for phenol 10 ppm was the most efficient, degrading 91.35% and 98.76% respectively in relation to the loading in 240 minutes, For the case of difenoconazol 5ppm the efficiency was higher achieving degradation percentages of 90.41% and 100% in 180 minutes, for the ZnO/clay catalysts the catalyst 5 for phenol was more efficient with percentages of 76.78% and 96.03% in 240 minutes, for difenoconazol 63.55% and 82.47% in 240 minutes, This indicates that increasing the load improves degradation. After three reuses, no loss of catalytic activity was determined with any of the catalysts evaluated; photolysis and absorption reached a maximum of 5.24% and 7.29% removal, respectively, indicating that the degradation of both compounds is due to photocatalysis effects.