Ozone-Based Technologies for Parabens Removal from Water: Toxicity Assessment

ABSTRACTOzone was tested for the detoxification of a mixture of five parabens. A combined O3/H2O2 process was optimized leading to up to 50% of COD removal in 15 min, while less than 50 min were needed to achieve total degradation. The toxic effect of the raw mixture and after 15 min of treatment by O3/H2O2 was evaluated using V. fischeri and C. fluminea and it was observed a strong detoxification after 15 min of oxidation. Moreover, while the raw effluent promoted the formation of reactive oxygen species in Wistar rat brain slices, no changes were observed after the O3/H2O2 treatment.