Bi-ionic potential studies across the inorganic precipitate synthetic membrane

Abstract

Bi-ionic potentials observed across polystyrene based chromium tungstate membrane using various electrolytes are reported. Theoretical equations derived recently by Toyoshima and Nozaki for the membrane potential and bi-ionic potential based on non-equilibrium thermodynamics have been used for the evaluation of various membrane parameters. The derived membrane parameters have been used to examine the validity of the theory utilized. Theoretical predictions were borne out quite satisfactorily by our experimental results. Scanning electron microscope (SEM) images of the membrane has also been presented.