Degradation of pharmaceuticals in batch experiments with ozone and nanoparticles

The catalytic activity of five different nanoparticles (NPs), α-Al2O3, γ-Al2O3, Mn2O3, CeO2, and TiO2 with different particle sizes during ozonation was examined, and the transferred ozone dose (TOD) required for the degradation of the emerging compounds was defined.

Data show the degradation of the micropollutants in batch experiments. We studied the degradation of pharmaceuticals in milliQ in the presence or not of NP (C=0.5 g/L). The initial concentration of the pollutants was 10 μM and the added ozone doses ranged from 0, 10, 20, 50, 75, 100, 150, and 200 μM. Bottles of 240 mL working volume were left to react at ambient temperature for four hours after ozone addition, and samples were collected, filtrated through a 0.2 μM nylon filter, and finally, analyzed in the HPLC. Residual ozone, if any, was determined by the indigo method.