Evaluating long-term performance of in situ vitrified waste forms: Methodology and results
In situ vitrification (ISV) is an emerging technology for the remediation of hazardous and radioactive waste sites. The concept relies on the principle of Joule heating to raise the temperature of a soil between an array of electrodes above the melting temperature. After cooling, the melt solidifies into a massive glass and crystalline block similar to naturally occurring obsidian. Determining the long-term performance of ISV products in a changing regulatory environment requires a fundamental understanding of the mechanisms controlling the dissolution behavior of the material. A series of experiments was performed to determine the dissolution behavior of samples produced from the ISV processing of typical soils from the Idaho National Engineering Laboratory subsurface disposal area. Dissolution rate constant measurements were completed at 90[degrees]C over the pH range 2 to 11 for one sample obtained from a field test of the ISV process.
- Research Organization:
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC06-76RL01830
- OSTI ID:
- 6745039
- Report Number(s):
- PNL-8358; ON: DE93004277
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
GLASS
DISSOLUTION
GROUND WATER
CHEMICAL REACTIONS
RADIOACTIVE WASTES
IN-SITU PROCESSING
VITRIFICATION
SOILS
REMEDIAL ACTION
WASTE FORMS
PERFORMANCE
BOROSILICATE GLASS
MATHEMATICAL MODELS
HYDROGEN COMPOUNDS
MATERIALS
OXYGEN COMPOUNDS
PROCESSING
RADIOACTIVE MATERIALS
WASTES
WATER
054000* - Nuclear Fuels- Health & Safety
052002 - Nuclear Fuels- Waste Disposal & Storage
052001 - Nuclear Fuels- Waste Processing
990200 - Mathematics & Computers