Pressure-induced reduction of shielding for improving sonochemical activity

The oxidation of potassium iodide, bubble cloud visualization studies and sound attenuation measurements are applied to determine the influence of hydrostatic pressure on chemical reactions induced by 20 kHz ultrasound. It is demonstrated that a rise in hydrostatic pressure leads in a rise in yield for the oxidation of potassium iodide in aqueous solution and the sound field is more intense for higher pressures.