Abstract
In a mixed electrolyte solution, an ion can display characteristic transport phenomenon such as reverse permeation and overshooting under certain conditions, as we have already revealed theoretically and experimentally. In this report, we resolved the equation on ionic flux by approximating the distribution of ions in the membrane to be linear, and calculated ionic concentration change accompanied with membrane permeation by computer approximation. And we compared the estimation values with the experimental values about cellulose membrane for HCl-KCl-H2O and HCl-CaCl2-H2O ternary systems. As a result, these values almost agreed with each other, and could explain reverse permeation and overshooting phenomenon fairly well. About reverse permeation, as we also revealed by computer estimation, it proceeds remarkably when the concentration of the objective ion is low, and it proceeds rapidly and remarkably when the mobility of the objective ion is large. About overshooting, it proceeds rapidly and remarkably when the concentration of the objective ion is low or the difference of the mobilities of coexisting ions is large.
