Multiphase droplet-based and continuous liquid-liquid extraction (LLE) of phenol from oil is studied in a low width-to-height aspect ratio polymethylmethacrylate (PMMA)-based microchannel reactor. The extraction efficiency of phenol from the dispersed phase consisting of silicone oil to the external continuous water phase is studied as a function of the flow rate ratio of the two immiscible phases. This paper demonstrates that for enhancing the extraction efficiency of phenol from silicone oil to water in droplet-based microfluidic reactors, a low flow rate ratio of the external continuous phase, Qc, to dispersed oil phase, Qd, is preferable.
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Das et al. (2015) studied this question.
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