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Recycling of CdTe photovoltaic waste

United States Patent

5,997,718
December 7, 1999
View the Complete Patent at the US Patent & Trademark Office
A method for extracting and reclaiming metals from scrap CdTe photovoltaic cells and manufacturing waste by leaching the waste with a leaching solution comprising nitric acid and water, skimming any plastic material from the top of the leaching solution, separating the glass substrate from the liquid leachate and electrolyzing the leachate to separate Cd from Te, wherein the Te is deposits onto a cathode while the Cd remains in solution.
Goozner; Robert E. (Charlotte, NC), Long; Mark O. (Charlotte, NC), Drinkard, Jr.; William F. (Charlotte, NC)
Drinkard Metalox, Inc. (Charlotte, NC)
09/ 097,630
June 16, 1998
This invention was made with U.S. Government support under contract No. DE-FG02-95ER81951 awarded by the U.S. Department of Energy. The U.S. Government has certain rights in this invention.