Patent ID: 11904278
Assignee: BL TECHNOLOGIES, INC.
Field: Chemical engineering (Chemistry)
Classification: CPC B  Y | IPC B

Claim 0:
1. An ion-exchange membrane for an electrodialysis stack having an electrode with a recessed edge and a total number of electrolysis cell pairs (total cp) that is at least 10 and up to 2000, the membrane defining apertures therein for forming a distribution manifold that includes manifold ducts of a concentrated stream when the membrane is a part of the electrodialysis stack:
wherein the membrane comprises:
an ion-exchange portion; and
an ion-transport resistant portion that extends substantially from the apertures past a line that corresponds to the recessed edge of the electrode for an overlap distance in cm that is about equal to:

(0.062 cm−1)*(exp(−60/total cp)*(area in cm2 of the manifold ducts of the concentrated stream at the recessed edge).