Degradation of acetaminophen by ozonation combined with sonolysis in the presence of nanoparticle catalyst

The degradation and mineralization of Acetaminophen in aqueous solution was investigated by various advanced oxidation processes including US, US/TiO۲, O۳, O۳/TiO۲, O۳/US and US/O۳/TiO۲. The obtained results revealed that all processes obeyed pseudo-first order kinetics and the coupled US/O۳/TiO۲ process was the most efficient method for removal of the pollutant with high synergistic effect. The maximum Acetaminophen removal efficiency during ۱۶ minutes, to the process of reconciliation US/O۳/TiO۲ average, about ۹۹.۸۳% respectively. Then, the effect of major operational parameters, such as TiO۲ dosage, US power and pH on the efficiency of the significant coupled process was studied. changes in the initial ۱۶ min of the processes taking place at the time of making, reduce slightly in pH resulting from the production of intermediates is created. Then by optimizing reaction conditions, it was found that most of the destruction in pH=۱۰ done. Catalyst study showed different levels by increasing the amount of catalyst, the more contaminants are destroyed.

کلیدواژه ها:

Degradation ، Ultrasound ، catalytic ozonation ، Nano-TiO۲ ، US/O۳/TiO۲