Membrane Science and Technology

Ion-Exchange Membrane Materials

Ion-exchange membranes are usually used in electrodialysis or diffusion dialysis by means of an electrical potential or concentration gradient, respectively, to selectively transport cationic and anionic types. When applied in anion- and cation-exchange membranes, an electrodialysis desalination process is typically arranged in an alternating pattern between two electrodes (an anode and a cathode) within the electrodialysis stack. A galvanic potential is provided as a voltage generated at the electrodes.