Influence of Liquid Height on Mechanical and Chemical Effects in 20 kHz Sonication
Influence of Liquid Height on Mechanical and Chemical Effects in 20 kHz Sonication
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DOI：
10.7567/jjap.52.07he07
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发表时间：
2013-07-01
影响因子：
1.5
通讯作者：
Koda, Shinobu
中科院分区：
文献类型：
--
作者：
Khuyen Viet Bao Tran;Asakura, Yoshiyuki;Koda, Shinobu
我们研究了液体高度的影响，在20 kHz的超声与一个新的Langevin型换能器的机械和化学效应。从聚环氧乙烷在水溶液中的降解评价机械效应，并用碘化钾溶液测量化学效应。驻波或反应区观察到使用声化学发光和铝箔腐蚀。与用速度除以辐照频率计算的波长相比，耦合振动使观测波长减小。随着液体高度的增加，机械效应被抑制。在化学效应的情况下，在超过120 mm的高度处获得稳定的声化学效率，并且声化学效率也明显高于常规喇叭型的声化学效率。(c)2013日本应用物理学会
We examined the influence of liquid height on mechanical and chemical effects in 20 kHz sonication with a new Langevin-type transducer. Mechanical effects were evaluated from the degradation of polyethylene oxide in aqueous solution and chemical effects were measured with potassium iodide solution. Standing waves or reactive zones were observed using sonochemical luminescence and aluminum foil erosion. The observed wavelength was reduced by coupled vibration, compared with the wavelength calculated by dividing velocity by irradiation frequency. As liquid height increased, mechanical effects were suppressed. In the case of chemical effects, the stable sonochemical efficiency gained at a height of over 120 mm, and the sonochemical efficiency were also markedly higher than those of a conventional horn-type one. (c) 2013 The Japan Society of Applied Physics