Method and article for primary containment of cesium wastes. [DOE patent application]
A method for producing a cesium-retentive waste form, characterized by a high degree of compositional stability and mechanical integrity, is provided by subjecting a cesium-loaded zeolite to heat under conditions suitable for stabilizing the zeolite and immobilizing the cesium, and coating said zeolite for sufficient duration within a suitable environment with at least one dense layer of pyrolytic carbon to seal therein said cesium to produce a final, cesium-bearing waste form. Typically, the zolite is stabilized and the cesium immobilized in less than four hours by confinement within an air environment maintained at about 600/sup 0/C. Coatings are thereafter applied by confining the calcined zeolite within a coating environment comprising inert fluidizing and carbon donor gases maintained at 1000/sup 0/C for a suitable duration.
- DOE Contract Number:
- W-7405-ENG-26
- Assignee:
- Dept. of Energy
- Patent Number(s):
- None
- Application Number:
- ON: DE82015903
- OSTI ID:
- 5364115
- Country of Publication:
- United States
- Language:
- English
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Method for primary containment of cesium wastes
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Related Subjects
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
ALKALI METALS
CARBON
CESIUM
COATINGS
ELEMENTS
HIGH TEMPERATURE
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
MANAGEMENT
MATERIALS
METALS
MINERALS
NONMETALS
PHASE TRANSFORMATIONS
PROCESSING
PYROLYTIC CARBON
RADIOACTIVE WASTE PROCESSING
SOLID WASTES
SOLIDIFICATION
VERY HIGH TEMPERATURE
WASTE MANAGEMENT
WASTE PROCESSING
WASTES
ZEOLITES