Three‐component mass transfer in liquid‐liquid extraction with the system glycerol‐acetone‐water. Part 1: The influence of vanishing diffusion coefficients in binodal states on the mechanisms of mass transfer

This contribution deals with the consequences of the decrease in diffusion coefficients at the boundaries of miscibility in fluid systems and its effect on the mechanisms of mass transfer. The liquid‐liquid (1–1) extraction involving several components is taken as an example for the discussion of this topic. A short review of Hampe's theory on transport mechanisms in the transition regions of interfaces [1] explains the intrinsic interdependence between mass and momentum transfer. Finally, a discussion of the peculiarities of resistances to mass transfer in boundary layers, based on the changes in molecular transport properties, is presented.