Abstract
Ultrasound and microreactors are a proven combination with many complementary effects that could lead to substantial improvement in an unit operation. This combination is especially effective in heterogeneous systems where the effectivity depends on improved mass transfer. This work focuses on immiscible liquid-liquid system for the purpose of reactive extraction. Since different flow patterns can be generated in a microreactor, a majority of the work with this combination focuses on the slug flow which is the most common and effective of the flow patterns. This work focuses on parallel flow which is less common due to the stricter conditions required to generate it, but with a more consistent interfacial area in comparison to the slug flow. The qualitative and quantitative effects of using ultrasound to parallel flow is explored with a high speed camera and a model test reactive extraction process. The effect of ultrasonic and operating parameters were studied. An improvement of 2.2 to 2.3 times in yield was obtained at a frequency of 41.57 kHz, amplitude of 590 mV and net applied elec. power of 20 W for a residence time ranging from 2 to 20 s, respectively.
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