Recycling of CdTe photovoltaic waste
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United States of America Patent
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Apr 27, 1999
Grant Date -
N/A
app pub date -
May 12, 1997
filing date -
May 12, 1997
priority date (Note) -
Expired
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Abstract
A method for extracting and reclaiming metals from scrap CdTe photovoltaic cells and manufacturing waste by leaching the metals in dilute nitric acid, 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, adding a calcium containing base to the leachate to precipitate Cd and Te, separating the precipitated Cd and Te from the leachate, and recovering the calcium-containing base.
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