MASS-TRANSFER ACROSS LIQUID-PHASE BOUNDARIES

A literature review on various analyses referring to the Marangoni eff ect is given. The stability behaviour during mass transfer has been an alyzed in the toluene/acetone/water system by holographic inferometry at a flat moving and quiescent phase boundary. Concentration differenc es between the bulk phases were varied and the influence of the direct ion of mass transfer and of the density profile in the mass exchanging phases have been considered. The experiments show the development of strong eddies in the area of the phase boundary as a result of growing concentration differences, with equilibrium being attained more rapid ly. A limiting influence of diffusive transport in the bulk phases was observed.