Molten salt processing of mixed wastes with offgas condensation
Description
We are developing an advanced process for treatment of mixed wastes in molten salt media at temperatures of 700--1000{degrees}C. Waste destruction has been demonstrated in a single stage oxidation process, with destruction efficiencies above 99.9999% for many waste categories. The molten salt provides a heat transfer medium, prevents thermal surges, and functions as an in situ scrubber to transform the acid-gas forming components of the waste into neutral salts and immobilizes potentially fugitive materials by a combination of particle wetting, encapsulation and chemical dissolution and solvation. Because the offgas is collected and assayed before release, and wastes containing toxic and … continued below
Physical Description
15 pages
Creation Information
Cooper, J.F.; Brummond, W.; Celeste, J.; Farmer, J.; Hoenig, C.; Krikorian, O.H. et al. May 13, 1991.
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- United States. Department of Energy. DOE; USDOE, Washington, DC (United States)
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Lawrence Livermore National Laboratory
Place of Publication: [Livermore,] California
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Description
We are developing an advanced process for treatment of mixed wastes in molten salt media at temperatures of 700--1000{degrees}C. Waste destruction has been demonstrated in a single stage oxidation process, with destruction efficiencies above 99.9999% for many waste categories. The molten salt provides a heat transfer medium, prevents thermal surges, and functions as an in situ scrubber to transform the acid-gas forming components of the waste into neutral salts and immobilizes potentially fugitive materials by a combination of particle wetting, encapsulation and chemical dissolution and solvation. Because the offgas is collected and assayed before release, and wastes containing toxic and radioactive materials are treated while immobilized in a condensed phase, the process avoids the problems sometimes associated with incineration processes. We are studying a potentially improved modification of this process, which treats oxidizable wastes in two stages: pyrolysis followed by catalyzed molten salt oxidation of the pyrolysis gases at ca. 700{degrees}C. 15 refs., 5 figs., 1 tab.
Physical Description
15 pages
Notes
OSTI; NTIS; INIS; GPO Dep.
Subjects
Keywords
- Actinide Compounds
- Actinide Isotopes
- Actinide Nuclei
- Alpha Decay Radioisotopes
- Alpha-Bearing Wastes
- Beta Decay Radioisotopes
- Beta-Minus Decay Radioisotopes
- Chalcogenides
- Chemical Reactions
- Decomposition
- Dissolution
- Encapsulation
- Even-Even Nuclei
- Even-Odd Nuclei
- Feasibility Studies
- Gaseous Wastes
- Hazardous Materials
- Heavy Nuclei
- Isotopes
- Management
- Materials
- Minutes Living Radioisotopes
- Molten Salts
- Nuclei
- Off-Gas Systems
- Oxidation
- Oxides
- Oxygen Compounds
- Plutonium 239
- Plutonium Compounds
- Plutonium Isotopes
- Plutonium Oxides
- Polonium 218
- Polonium Isotopes
- Processing
- Pyrolysis
- Radioactive Materials
- Radioactive Wastes
- Radioisotopes
- Salts
- Solvation
- Storage
- Thermochemical Processes
- Transuranium Compounds
- Uranium Compounds
- Uranium Oxides
- Very High Temperature
- Waste Management
- Waste Processing
- Wastes
- Years Living Radioisotopes 052001* -- Nuclear Fuels-- Waste Processing
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Source
- 10. annual international incineration conference: environmental concerns and controls, Knoxville, TN (USA), 13-17 May 1991
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Identifier
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- Other: DE91013518
- Report No.: UCRL-JC-107288
- Report No.: CONF-910559--5
- Grant Number: W-7405-ENG-48
- Office of Scientific & Technical Information Report Number: 5564582
- Archival Resource Key: ark:/67531/metadc1085345
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Creation Date
- May 13, 1991
Added to The UNT Digital Library
- Feb. 10, 2018, 10:06 p.m.
Description Last Updated
- May 2, 2019, 4:17 p.m.
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Cooper, J.F.; Brummond, W.; Celeste, J.; Farmer, J.; Hoenig, C.; Krikorian, O.H. et al. Molten salt processing of mixed wastes with offgas condensation, article, May 13, 1991; [Livermore,] California. (https://digital.library.unt.edu/ark:/67531/metadc1085345/: accessed June 8, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.