Effect of alumina particles on sonolysis degradation of chlorobenzene in aqueous solution

Sonolysis is one of the techniques to destroy various organic contaminants in dilute aqueous solutions. The purpose of this study was to examine the e ffect of alumina particles on the enhancement of sonolysis. Chlorobenzene w as chosen as the model organic compound and batch experiments were carried out with 20 kHz ultrasound source. The results showed the acceleration of t he decomposition rate was observed and the rate was proportional to the sur face area increased by the introduction of the particles. The possible mech anisms for the enhancement were discussed including the increase in the cav itation bubbles which were produced by sonication and the decomposition too k place in.