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Title: Method for primary containment of cesium wastes

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 zeolite is stabilized and the cesium immobilized in less than four hours by confinement within an air environment maintained at about 600.degree. C. Coatings are thereafter applied by confining the calcined zeolite within a coating environment comprising inert fluidizing and carbon donor gases maintained at 1,000.degree. C. for a suitable duration.

Inventors:
 [1];  [1];  [2];  [1];  [2];  [1]
  1. (Oak Ridge, TN)
  2. (Knoxville, TN)
Issue Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN
OSTI Identifier:
864516
Patent Number(s):
4376792
Assignee:
United States of America as represented by United States (Washington, DC) ORNL
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; primary; containment; cesium; wastes; producing; cesium-retentive; waste; form; characterized; degree; compositional; stability; mechanical; integrity; provided; subjecting; cesium-loaded; zeolite; heat; conditions; suitable; stabilizing; immobilizing; coating; sufficient; duration; environment; dense; layer; pyrolytic; carbon; seal; therein; produce; final; cesium-bearing; typically; stabilized; immobilized; hours; confinement; air; maintained; 600; coatings; thereafter; applied; confining; calcined; comprising; inert; fluidizing; donor; gases; 000; waste form; pyrolytic carbon; mechanical integrity; sufficient duration; thereafter applied; comprising inert; environment comprising; inert fluidizing; /588/210/427/976/

Citation Formats

Angelini, Peter, Lackey, Walter J., Stinton, David P., Blanco, Raymond E., Bond, Walter D., and Arnold, Jr., Wesley D. Method for primary containment of cesium wastes. United States: N. p., 1983. Web.
Angelini, Peter, Lackey, Walter J., Stinton, David P., Blanco, Raymond E., Bond, Walter D., & Arnold, Jr., Wesley D. Method for primary containment of cesium wastes. United States.
Angelini, Peter, Lackey, Walter J., Stinton, David P., Blanco, Raymond E., Bond, Walter D., and Arnold, Jr., Wesley D. Sat . "Method for primary containment of cesium wastes". United States. https://www.osti.gov/servlets/purl/864516.
@article{osti_864516,
title = {Method for primary containment of cesium wastes},
author = {Angelini, Peter and Lackey, Walter J. and Stinton, David P. and Blanco, Raymond E. and Bond, Walter D. and Arnold, Jr., Wesley D.},
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 zeolite is stabilized and the cesium immobilized in less than four hours by confinement within an air environment maintained at about 600.degree. C. Coatings are thereafter applied by confining the calcined zeolite within a coating environment comprising inert fluidizing and carbon donor gases maintained at 1,000.degree. C. for a suitable duration.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1983},
month = {1}
}

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