20KHZ 900W 220V Ultrasonic Emulsification Homogenizer Plant Oil Extraction For Nanoemulsion Mixing

20KHZ 900W 220V Ultrasonic Emulsification Homogenizer Plant Oil Extraction For Nanoemulsion Mixing

The degradation of organic pollutants by ultrasound does not come from the direct interaction between sound waves and organic molecules, but mainly from the phenomenon of acoustic cavitation. Ultrasonic cavitation is an extremely complex physical phenomenon in liquids, which refers to a series of dynamic processes such as oscillation, growth, contraction, and collapse of small bubble nuclei excited by ultrasound. Dissolved gases in water, dispersed small bubbles, or bubbles and solid particles generated by thermal disturbances may all promote cavitation. The presence of dissolved gases in the reaction system can provide cavitation nuclei to stabilize the cavitation effect. The larger the heat capacity ratio of dissolved gas is, the more obvious the sonochemistry effect is. Therefore, in sonochemistry, monoatomic gases (He, Ne, Ar) are used more than diatomic gases and air (N2, 02). When ultrasonic waves with a frequency of 20 kHz are used to degrade and dissolve aqueous solutions of h, Ar, He, and 0, the generation rate of H202 and · OH varies by about an order of magnitude due to the different dissolved gases.

The research shows that high-frequency ultrasound is helpful to improve the speed of ultrasound assisted bio plant catalytic degradation of vibrating rod, because the yield of hydroxyl radical increases with the increase of sound source frequency, but the frequency is also related to the attenuation of ultrasound. Increasing sound intensity is beneficial for oxidation reaction and increases degradation rate. When using a probe type ultrasonic generator to degrade pesticide methamidophos aqueous solution, as the sound intensity increases, the degree of cavitation increases, and the degradation rate of methamidophos increases. However, if the sound energy is too high, the cavitation bubbles will grow greatly in the negative phase of the sound wave, forming a sound shield. The available sound field energy of the system will instead decrease, and the degradation rate will also decrease.

In order to improve the efficiency of ultrasound assisted biological plant catalytic degradation of vibrating rods, in recent years, researchers have not only explored the degradation mechanism and performance of ultrasound, but also conducted extensive research on ultrasound reactors. Some improved reactors have also been continuously introduced.

20KHZ 900W 220V Ultrasonic Emulsification Homogenizer Plant Oil Extraction For Nanoemulsion Mixing

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