A1 超音波霧化による水溶液からの有機物の分離

概要

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Mechanism of ethanol separation from its aqueous solution through ultrasonic atomization is discussed from an aspect of evaporation. Difference between ethanol and water evaporation rate is examined without irradiating ultrasound. With changing the mixing strength in gas and liquid adjacent to the liquid surface, simple evaporation experiments are carried out for three contacting modes. The first is that both gas and liquid are disturbed, the second is disturbed gas and quiescent liquid, and the third is that both gas and liquid are quiet. The result suggests that selective ethanol evaporation occurs from well-stirred both gas and liquid. Such a liquid surface is seen at the liquid fountain jet formed above of the oscillator. Thus, ethanol evaporates selectively from the fountain jet. In addition, evaporation of water is slightly enhanced from stirred gas and quiescent liquid. The preferential evaporation contributes to form fine liquid droplets enriched with ethanol within the vapor phase.
日本ソノケミストリー学会の論文
2005-10-14