Using microstructured yeast as biotemplate for TiO2 deposition applied on amoxicillin solar photodecomposition

Abstract

The indication of amoxicillin (AMOX) is the most frequent by the public health assistance in Brazil. After the body metabolization, the antibiotic is discharged by excretes in the sewage system; also acting as secondary pollution sources for surface water resources. The microstructured yeast culture (biotemplate) enhances the TiO2 surface area before the amoxicillin solar photodecomposition. The maximum removal percentage was 56% of AMOX with pseudo-second-order kinetics. The use of the low-frequency ultrasonic source in the TiO2 slurry dispersion after the yeast culture enhanced the TiO2 surface area and its effectiveness during the antibiotics solar photodecomposition.