Abstract
Sonochemical process refers to a physical or chemical reaction that uses the high pressure and temperature field in a bubble’s volumetric oscillation induced by an ultrasonic pressure oscillation. We developed a sonochemical reactor using a hollow cylindrical ultrasonic horn capable of generating many microbubbles from the orifice at its end. This reactor can decompose a persistent substance in a liquid because immersion of the horn’s end into the liquid can allow for intense ultrasonic irradiation close to the generated microbubbles. In this paper, we report the influence of the gas flow rate and the surfactant addition on the microbubble-mediated degradation of indigo carmine.
