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

Abstract

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.

Inventors:
; ; ; ; ;
Issue Date:
OSTI Identifier:
5364115
Application Number:
ON: DE82015903
Assignee:
Dept. of Energy ERA-07-049403; EDB-82-121184
DOE Contract Number:  
W-7405-ENG-26
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
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

Citation Formats

Angelini, P., Lackey, W.J., Stinton, D.P., Blanco, R.E., Bond, W.D., and Arnold, W.D. Jr. Method and article for primary containment of cesium wastes. [DOE patent application]. United States: N. p., 1981. Web.
Angelini, P., Lackey, W.J., Stinton, D.P., Blanco, R.E., Bond, W.D., & Arnold, W.D. Jr. Method and article for primary containment of cesium wastes. [DOE patent application]. United States.
Angelini, P., Lackey, W.J., Stinton, D.P., Blanco, R.E., Bond, W.D., and Arnold, W.D. Jr. Thu . "Method and article for primary containment of cesium wastes. [DOE patent application]". United States.
@article{osti_5364115,
title = {Method and article for primary containment of cesium wastes. [DOE patent application]},
author = {Angelini, P. and Lackey, W.J. and Stinton, D.P. and Blanco, R.E. and Bond, W.D. and Arnold, W.D. Jr.},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1981},
month = {9}
}