Electrodialysis

Name:
Electrodialysis
Detailed information:
A form of dialysis in which an electric current aids the separation of substances that ionize in solution. Seawater can be desalted by this method on a large scale by placing it in the center chamber of a three-compartment container having two semipermeable membranes and a positive electrode in one end chamber, and a negative electrode in the other. The ions migrate to their respective electrodes under a difference of potential, leaving the water saltfree.See Dialysis; Desalination; Demineralization.