Sonochemical degradation kinetics of methyl violet in aqueous solutions

The sonochemical degradation in aqueous solution of methyl violet, chosen as a model of a basic dye, was studied. The ultrasonic degradation kinetics in water were found to be first-order and the degradation rate coefficient is 1.35x10(-2) min(-1) (R=0.9934, n=8) at 20+/-1degreesC. The influence of the initial concentrations, reaction temperature and the pH of medium on the ultrasonic decomposition of methyl violet were also investigated.