论文信息 - The determination of diffusion coefficients of counter ion in an ion exchange membrane using electrical conductivity measurement

The determination of diffusion coefficients of counter ion in an ion exchange membrane using electrical conductivity measurement

Abstract Electrical conductivity experiments were carried out in a bi-ionic (chloride–nitrate) electrolyte with and without a permselective anion exchange membrane (ACS of Tokuyama Soda) at variable chloride/nitrate concentration. Diffusion coefficients of counter ions (Cl − and NO 3 − ) in the membrane were determined from a mathematical model based on the Nernst–Planck diffusion–convection theory: the mean diffusion coefficients in the membrane were obtained by fitting the (conductivity vs. concentration) curves with the Nernst–Planck equation.

[1] N. Yoshida,et al. Effect of an unstirred layer on ion transport through a membrane , 1980 .

[2] P. Schaetzel,et al. Mass transfer through a weak acid ion-exchange membrane , 1993 .

[3] T. Kojima,et al. A fundamental study on recovery of copper with a cation exchange membrane: Part 2 — Transfer rate of copper and hydrogen ion through a cation exchange membrane , 1982 .

[4] Victor Nikonenko,et al. Self diffusion and conductivity in NafionR membranes in contact with NaCl+CaCl2 solutions , 1996 .

[5] C. Gavach,et al. Competitive diffusion of hydrochloric acid and sodium chloride through an acid dialysis membrane , 1991 .

[6] Hirofumi Miyoshi,et al. Diffusion coefficients of ions through ion-exchange membranes for Donnan dialysis using ions of the same valence , 1997 .

[7] F. Helfferich. ION-EXCHANGE KINETICS.1 III. EXPERIMENTAL TEST OF THE THEORY OF PARTICLE-DIFFUSION CONTROLLED ION EXCHANGE , 1962 .

[8] P. Schaetzel,et al. Mass-transfer through ion exchange membranes: comparison between the diffusion and the diffusion-convection Stefan-Maxwell equations , 1997 .

[9] Masao Sudoh,et al. DONNAN DIALYSIS CONCENTRATION OF CUPRIC IONS , 1987 .