Liquid Height Effect on Sonochemical Reactions in a 35 kHz Sonoreactor

概要

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In order to investigate the effect of liquid height based on the wavelength of ultrasound for sonochemical reactions, various liquid heights and input powers were applied in a large-scale 35 kHz sonoreactor. For the liquid height of 1 $\lambda$ to 6 $\lambda$, 5 $\lambda$ was determined as the optimum level for all applied input powers of 30, 60, and 90 W. The results revealed that liquid height should be above a certain level in order to optimize both sonochemical efficiency and conversion efficiency. Moreover, the enhancement of applying a higher input power was reducing as the liquid height increased and there was no significant difference of conversion efficiency at optimal liquid height due to a larger attenuation for a higher input power. To understand further the effect of the water level, the liquid height was adjusted by quarter of a wavelength from the liquid height of 1 L. Consequently, a small change of liquid height resulted in a significant difference for both sonochemical efficiency and conversion efficiency. A peak value for each change of the liquid height by half a wavelength was also observed.
Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
2009-07-25