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Title: Vitrification of organics-containing wastes

A process for stabilizing organics-containing waste materials and recovery metals therefrom, and a waste glass product made according to the process are described. Vitrification of wastes such as organic ion exchange resins, electronic components and the like can be accomplished by mixing at least one transition metal oxide with the wastes, and, if needed, glass formers to compensate for a shortage of silicates or other glass formers in the wastes. The transition metal oxide increases the rate of oxidation of organic materials in the wastes to improve the composition of the glass-forming mixture: at low temperatures, the oxide catalyzes oxidation of a portion of the organics in the waste; at higher temperatures, the oxide dissolves and the resulting oxygen ions oxidize more of the organics; and at vitrification temperatures, the metal ions conduct oxygen into the melt to oxidize the remaining organics. In addition, the transition metal oxide buffers the redox potential of the glass melt so that metals such as Au, Pt, Ag, and Cu separate form the melt in the metallic state and can be recovered. After the metals are recovered, the remainder of the melt is allowed to cool and may subsequently be disposed of. The productmore » has good leaching resistance and can be disposed of in an ordinary landfill, or, alternatively, used as a filler in materials such as concrete, asphalt, brick and tile.« less
Inventors:
Issue Date:
OSTI Identifier:
463576
Assignee:
US Dept. of Energy, Washington, DC (United States) SRS; SCA: 052001; 320305; PA: EDB-97:060132; SN: 97001764387
Patent Number(s):
PATENTS-US-A8408157
Application Number:
ON: DE97003865; PAN: 8-408,157; TRN: AHC29709%%13
Contract Number:
AC09-89SR18035
Resource Relation:
Other Information: PBD: 1995
Research Org:
Westinghouse Savannah River Co., Aiken, SC (United States)
Sponsoring Org:
USDOE, Washington, DC (United States)
Country of Publication:
United States
Language:
English
Subject:
05 NUCLEAR FUELS; 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; ORGANIC COMPOUNDS; VITRIFICATION; MATERIALS RECOVERY; ORGANIC ION EXCHANGERS; ELECTRONIC CIRCUITS; TRANSITION ELEMENT COMPOUNDS; OXIDES; CATALYTIC EFFECTS; METALS; WASTE FORMS; RADIOACTIVE WASTES; NONRADIOACTIVE WASTES; HAZARDOUS MATERIALS

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