Abstract
In order to examine more effective salt enrichment from sea water, first of all, conventional membrane parameters such as electroosmotic coefficient β and filtration coefficient Lp were rearranged on the basis of fundamental physicochemical units regarding the ion exchange membranes and then summarized. On the other hand, the salt producing data from electrodialysis were analyzed from basic physicochemical aspects and the factors controlling the effective salt enrichment were studied. It turned out that electroosmotic coefficients play an important role in electrodialysis and a value required for saturated brine concentration was proposed.