1. Ion Transport Phenomena across the Parallel Composite Membrane
- Author
-
Akira Matsubara, Hideo Kimizuka, and Fumiko Komada
- Subjects
Membrane potential ,Membrane ,Chemistry ,Composite number ,Analytical chemistry ,Conductance ,Ionic bonding ,Thermodynamics ,Flux ,General Chemistry ,Intermembrane transport ,Ion transporter - Abstract
The equations of ionic currents in the parallel composite membrane-NaCl system were derived from the phenomenological equations presented by Kedem and Katchalsky. The elements of the conductance matrix for the composite membrane system, gαβ, as well as those for the single membrane systems with cation-exchange or anion-exchange membranes, or , respectively, were determined by the measurements of membrane potential, membrane conductance, and salt flux. It was found that gαβc or gαβa for the constituent elements of the composite membrane system was different from or for the single membrane systems, respectively. These differences may be attributed to the situation that gαβc and gαβa represent the intra- and intermembrane transport phenomena, while and represent the former phenomena only. The composite membrane system is characterized by the large cross coefficient which is comparable in the magnitude to the straight coefficients, i.e., gNa·Cl ≈ gNa·Na ≈ gCl·Cl. Kedem and Katchalsky have predicted that the s...
- Published
- 1994