Degradation of Chlorobenzene in Novel Configuration Sonoreactors: Comparison Between Sonoreactor with Multi Transducer and Conventional Sonoreactor

摘要

Sono-reactors have a promising future in the area of wastewater treatment as one of the advanced technologies. The solution of chlorobenzene(CB) was irradiated by ultrasound in a parallel or orthorhombic multi-frequency sono-reactor and in an ultrasonic bath, then, some reacted solution was analyzed by uv-vis spectrophotometer every 30 min to measure the remained content of chlorobenzene in the solution, and the degradation percentage of chlorobenzene was calculated. It has been found that the degradation percentage of chlorobenzene in orthorhombic ultrasonic fields was greater by 10%~11% than the algebraic sum of degradations of chlorobenzene in individual frequency field, and the degradation percentage in parallel fields was almost as same as the sum of degradation in individual frequency field. Comparing the rates of degradation of CB in different power input, it was found that the increase in amplitude of degradation percentage was inversely proportional to the operating power input. In the same operating frequency, power dissipation of 90 w, and irradiation time of 120 min, the degradation percentage of CB (initial concentration is 50 mg/L) in the reactor studied in the paper was 10.8% which was higher than the degradation percentage of 7.6% in the ultrasonic bath.