Passivation of elemental phosphorus contained in waste ponds
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United States of America Patent
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Oct 9, 1990
Issued Date -
N/A
app pub date -
Dec 31, 1987
filing date -
Aug 8, 1986
priority date (Note) -
Expired
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Abstract
Elemental phosphorus contained in waste ponds can be appropriately passivated to render them substantially less pyrophoric by bringing the elemental phosphorus-containing wastes into contact with an oxygen-containing gas. Substantially pure oxygen can be used to appropriately sparge the elemental phosphorus-containing wastes submerged in the waste pond. If desired, phosphorus values can be recovered in the form of an aqueous phosphate solution.
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