Study on degradation rate constant of chlorobenzene in aqueous solution using a recycle ultrasonic reactor

Degradation of chlorobenzene in aqueous solution using a recycle ultrasonic reactor was investigated. The degradation rate constant increased with inc reasing volumetric now rates, reactor volumes and frequencies with electric power kept constant. Effective ultrasonic intensity was measured by a simp le chemical dosimetry based on observation of the fading-time of alkaline p henolphthalein solution. The rate constant of the degradation reaction of c hlorobenzene was proportional to the ultrasonic intensity D-ult [J/g] that is, a measure of the sonochemical effects. These results indicate that sono chemical effects can be interpreted in terms of the ultrasonic intensity or the ultrasonic energy consumed in the reactor.