Abstract
For the scale-up of sonochemical reaction to practically useful size, we investigate the effects of the reaction parameters and conditions on the sonochemical reactivity. Two reactors are used in this experiment. One is quartz bath with the size of 175×65×45mm which has 1MHz transducer. Ancther is SUS bath with the size of 220×140×200mm which can set various transducers at bottom and sidewall. Potassium Iodide (KI) and Methyl Orange (MO) solution are used to investigate the sonochemical reactivity. Acoustic pressure is also measured with the reactivity. We have found out the following effects on the sonochemical reactivity 1. Reactivity increases linearly with the concentration of oxygen in the water. 2. Reactivity does not depend on the reflect position of ultrasonic wave. Possibly reaction takes place only near the transducer and the reflector. 3. Free surface reflection is higher reactive than fixed reflector at same electric current. Also the acoustic pressure is lower and the input electric power is higher. 4. Reactivity and acoustic pressure increases linearly to the electric current, but limited to the saturation, however the electric power is not limited and keeps increasing. 5. Reactivity decreases as frequency increases at same acoustic pressure from 300kHz to 1MHz.
