Estudio de la inactivación de Klebsiella pneumoniae en agua natural mediante fotólisis y fotocatálisis

Abstract

Abstract:The present study evaluated the disinfection efficiency of Klebsiella pneumoniae using TiO2/clay and ZnO/clay photocatalysts with a ratio of 80%/20%, the loading effect was studied for 20g/L and 40 g/L with solar radiation, It was determined that photolysis does not exert a significant effect on the inactivation of the bacteria in 60 minutes of evaluation, with TiO2 catalysts it was observed that the increase of load to 40g/L improves the reaction rate reducing the time approximately 25% with an inactivation of 99. 999% at 45minutes, the presence of mineral salts and other compounds decrease the efficiency of the photocatalyst to an inactivation of 99.99% at 60 minutes, it was determined that the ZnO catalysts have a similar compartmentalization to the TiO2 catalysts, increasing the load to 40g/L improves the reaction rate reducing the reaction time by approximately 30% with an inactivation of 99.999% at 20 minutes. The presence of mineral salts did not affect the efficiency, the reuse of the catalysts after three cycles does not cause loss of catalytic activity with respect to the catalysts studied.