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Method and apparatus for separation of heavy and tritiated water

United States Patent

December 25, 2001
View the Complete Patent at the US Patent & Trademark Office
Savannah River National Laboratory - Visit the Technology Transfer Website
The present invention is a bi-thermal membrane process for separating and recovering hydrogen isotopes from a fluid containing hydrogen isotopes, such as water and hydrogen gas. The process in accordance with the present invention provides counter-current cold and hot streams of the fluid separated with a thermally insulating and chemically transparent proton exchange membrane (PEM). The two streams exchange hydrogen isotopes through the membrane: the heavier isotopes migrate into the cold stream, while the lighter isotopes migrate into the hot stream. The heavy and light isotopes are continuously withdrawn from the cold and hot streams respectively.
Lee; Myung W. (late of North Augusta, SC)
The United States of America as represented by the Department of Energy (Washington, DC)
09/ 514,376
February 28, 2000
The present invention was conceived and developed under a U.S. Government Contract No. DE-AC09-96SR18500 awarded by the U.S. Department of Energy. The Government has rights in this invention.