Sonochemical Reaction Studies Of The Factors That Affect Aqueous Solution

The sonochemical in aqueous solution were investigated. The bubble dynamic motion caused by ultrasound was moldeled and simulated using MATLAB. The input ultrasonic power of solution system was measured by calorimetry. The concentration of hydrogen peroxide in water and releasing iodine in potassium iodide solution was measured. The effect of ultrasound irradiating time, output power of ultrasound generator and temperature of bulk solution on the results were studied. And the aim of the research is to provide theoretical parameters and technical supply to the application of ultrasound in industry.1. Moldeling and simulation of bubble motion caused by ultrasound using MATLABThe model to describe bubble dynamic motion caused by ultrasound was presented, which included the effects of fluid viscosity, surface tension and vapor pressure of the solvent. The general model equation was solved and the cavitation process was simulated using MATLAB. The effects of the factors, such as the ultrasonic frequency, the ultrasonic intensity and the initial radius of the bubble, on the bubble motion and cavitation process, and the maximum temperature and pressure affected by bulk solution temperature and the ultrasonic intensity in collapsing bubble were discussed in aqueous solution. The simulation results show that the frequency, the ultrasonic intensity and the initial radius of the bubble have great effects on the bubble dynamics and cavitation process and both of the maximum temperature and pressure are very sensitive to the bulk solution temperature and the ultrasonic intensity. This work provides a very important basis for the application of ultrasound to a variety of chemical systems.2. Measuring of input ultrasonic power of solution system by calorimetryThe input ultrasonic power of solution system was measured by calorimetry. The input ultrasonic power of solution system was went up with the input power of the generator nonlinearly, and it was much lower than the input power, about 20 to 30 percent of the input power of generator.