Method and article for primary containment of cesium wastes. [DOE patent application]

Patent · Thu Sep 03 00:00:00 EDT 1981

OSTI ID:5364115

Angelini, P; Lackey, W J; Stinton, D P; Blanco, R E; Bond, W D; Arnold, Jr, W D

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
• Application Number: ON: DE82015903
• OSTI ID: 5364115
• Country of Publication: United States
• Language: English

Related Subjects

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
PYROLYTIC CARBON
RADIOACTIVE WASTE PROCESSING
CESIUM
SOLIDIFICATION
SOLID WASTES
COATINGS
HIGH TEMPERATURE
VERY HIGH TEMPERATURE
ZEOLITES
ALKALI METALS
CARBON
ELEMENTS
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
MANAGEMENT
MATERIALS
METALS
MINERALS
NONMETALS
PHASE TRANSFORMATIONS
PROCESSING
WASTE MANAGEMENT
WASTE PROCESSING
WASTES
052001* - Nuclear Fuels- Waste Processing