Abstract
Extraction of dichlorphenol from freely suspended single drops into a continuous phase enhanced by an instantaneous chemical reaction was investigated using NaOH solutions of different concentrations. Also, the reverse mass transfer direction from the continuous phase into the dispersed phase was studied by extracting salicylic acid with the liquid ion exchanger LA-2. Concentrations were measured continuously without taking samples by means of a modified liquid scintillation technique. For appropriate concentrations of NaOH the continuous phase side mass transfer resistance vanishes with increasing extraction time and hence, for the first time, the individual mass transfer coefficients in the dispersed and continuous phase were determined from the overall value for exactly the same fluiddynamical conditions. Experimentally determined enhancement factors are larger than those predicted by the film theory.
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