SUSTAINABLE RECOVERY OF METAL COMPOUNDS
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United States of America Patent
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Issued Date -
Nov 10, 2011
app pub date -
Apr 14, 2009
filing date -
Apr 14, 2008
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Disclosed is a process for removing metals from waste, particularly electronic waste (or “e-waste”). The process generally includes the steps of dissolving at least some of the metals from the waste with nitric acid reagent and then causing at least some of the metals to precipitate as metal oxides and/or metal nitrates. NOx gases produced as by-product by the nitric acid dissolution of metallic components in the electronic waste are reused, in particular for generating permanganate when one of the metallic components comprises manganese.
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