ELECTRODIFFUSION STUDY OF A LIQUID-LIQUID INTERFACE

A comparative study of solid/liquid and liquid/liquid interface has been performed using electrodiffusion measurements with a gallium drop as a working electrode. The gallium transforms from solid to liquid state at 29.8-degrees-C, that is why one can ascertain the difference between mass transfer coefficient for solid and liquid interfaces in the same hydrodynamical conditions. The experiments were performed in a cylindrical vessel which was subjected to heating and agitation. The gallium electrode was placed at the bottom of the vessel. The transformation of the gallium electrode from the solid to the liquid state manifests itself in the decrease of the global mass transfer rate.