569-576The transport behaviour of liquid membranes generated by lecithin at the sintered glass membrane-water
interface has been studied. Data on hydraulic permeability, electroosmotic velocity, streaming potential
and streaming current have been used to calculate the transport coefficients (Rik) accounting for liquid
membranes, using the theory developed by Kedem and Katchalsky for composite series membranes.
The trends observed in degree of coupling corresponding to liquid membranes are indicative of
the applicability of liquid membranes as model systems for biological membranes. The efficiencies of
electro-kinetic energy conversion for both electroosmosis and streaming potential have been evaluated
and the results thus obtained have been shown to be consistent with the steady state thermodynamic
theory
