Sol-gel technology applied to crystalline ceramic nuclear waste forms
The sol-gel process is being developed for the solidification and isolation of high-level nuclear fuel waste. Three gelation methods are being developed for producing alternative waste forms. These include internal gelation for producing spheres of up to 1 mm diam suitable for coating, external gelation, and water extraction methods for producing material suitable for alternate ceramic processing. In this study internal gelation has been used to produce ceramic spheres of various alternative nuclear waste compositions. A gelation system capable of producing 100-g batches has been assembled and used for development. Waste forms containing up to 70 wt % simulated Savannah River Plant waste have been produced. Dopants such as Cs, Sr, Nd, Ru, and Mo were used in some experiments to observe side waste streams and sintering effects. Synroc microspheres were coated with both low-density carbon, high-density impermeable carbon, high-temperature dense SiC, and SiC deposited at temperatures near 900/sup 0/C. Other gelation methods and other alternative waste forms are being developed.
- Research Organization:
- Oak Ridge National Lab., TN (USA)
- DOE Contract Number:
- W-7405-ENG-26
- OSTI ID:
- 6833961
- Report Number(s):
- CONF-801124-27; TRN: 81-000038
- Resource Relation:
- Conference: 3. annual meeting of the Materials Research Society, Boston, MA, USA, 17 Nov 1980
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
RADIOACTIVE WASTE PROCESSING
HIGH-LEVEL RADIOACTIVE WASTES
SOLIDIFICATION
SOL-GEL PROCESS
CERAMICS
CESIUM
COATINGS
FLOWSHEETS
LEACHING
MICROSPHERES
MOLYBDENUM
NEODYMIUM
PYROLYTIC CARBON
RUTHENIUM
SILICON CARBIDES
SINTERING
STRONTIUM
THERMAL ANALYSIS
UREA
UROTROPIN
VERY HIGH TEMPERATURE
WASHING
ALKALI METALS
ALKALINE EARTH METALS
AMIDES
AMINES
CARBIDES
CARBON
CARBON COMPOUNDS
CARBONIC ACID DERIVATIVES
CLEANING
DIAGRAMS
DISSOLUTION
DIURETICS
DRUGS
ELEMENTS
FABRICATION
MANAGEMENT
MATERIALS
METALS
NONMETALS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PHASE TRANSFORMATIONS
PLATINUM METALS
PROCESSING
RADIOACTIVE MATERIALS
RADIOACTIVE WASTES
RARE EARTHS
REFRACTORY METALS
SEPARATION PROCESSES
SILICON COMPOUNDS
TRANSITION ELEMENTS
WASTE MANAGEMENT
WASTE PROCESSING
WASTES
052001* - Nuclear Fuels- Waste Processing