Mass Transfer During Droplet Formation - A Measuring Technique Study
Mass Transfer During Droplet Formation - A Measuring Technique Study
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DOI：
10.1002/cite.201700045
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发表时间：
2017-12-01
影响因子：
1.9
通讯作者：
Bart, Hans-Joerg
中科院分区：
文献类型：
--
作者：
Heine, Jens S.;Bart, Hans-Joerg
在液-液萃取过程中，传质系数是关键的设计参数之一。在本研究中，分析研究了静止连续相中液滴形成过程对传质的影响。因此，共焦拉曼光谱在一个新的测量单元结合界面张力测量。结果表明，在甲苯-乙腈-水体系中（从分散相到连续相的传质方向），Marangoni效应导致在前5s内传质50%，而在1 min内传质90%。
In liquid-liquid extraction processes, the mass transfer coefficient is one of the key design parameters. In the present study, the impact on mass transfer during droplet formation in a quiescent continuous phase is investigated analytically. Therefore, confocal Raman spectroscopy in a novel measurement cell combined with interfacial tension measurements are applied. It could be shown, that Marangoni effects in the system toluene-acetonitrile-water (mass transfer direction from the dispersed to the continuous phase) lead to 50% of mass transferred in the first 5s when 90% is transferred in 1min.