Effects of charge density on electrolyte transport through dialysis membranes

Abstract

Charged membranes have been recently developed in clinical use. Basic studies on electrolyte transport through charged dialysis membranes were rarely found. In the present study, we determined the effects of material and property of dialysis membranes on the transport of inorganic phosphate and sodium ion. The concentration dependence was found in ion transport because of charge density instead of the slight concentration dependence of ion radius and diffusion coefficient. This demonstrates that ion transport through charged membranes strongly depends on ion strength.