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Title: Method for synthesizing pollucite from chabazite and cesium chloride

Abstract

A method for immobilizing waste chlorides salts containing radionuclides and hazardous nuclear material for permanent disposal, and in particular, a method for immobilizing waste chloride salts containing cesium, in a synthetic form of pollucite. The method for synthesizing pollucite from chabazite and cesium chloride includes mixing dry, non-aqueous cesium chloride with chabazite and heating the mixture to a temperature greater than the melting temperature of the cesium chloride, or above about 700.degree. C. The method further comprises significantly improving the rate of retention of cesium in ceramic products comprised of a salt-loaded zeolite by adding about 10% chabazite by weight to the salt-loaded zeolite prior to conversion at elevated temperatures and pressures to the ceramic composite.

Inventors:
 [1]
  1. Naperville, IL
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
OSTI Identifier:
872162
Patent Number(s):
US 5875407
Assignee:
United States of America as represented by United States (Washington, DC)
DOE Contract Number:  
W-31109-ENG-38
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; synthesizing; pollucite; chabazite; cesium; chloride; immobilizing; waste; chlorides; salts; containing; radionuclides; hazardous; nuclear; material; permanent; disposal; particular; synthetic; form; mixing; dry; non-aqueous; heating; mixture; temperature; melting; 700; degree; comprises; significantly; improving; rate; retention; ceramic; products; comprised; salt-loaded; zeolite; adding; 10; weight; prior; conversion; elevated; temperatures; pressures; composite; waste chloride; ceramic products; ceramic product; permanent disposal; melting temperature; ceramic composite; elevated temperatures; elevated temperature; chloride salt; chloride salts; containing radionuclides; nuclear material; salts containing; significantly improving; immobilizing waste; containing cesium; hazardous nuclear; products comprise; /588/210/

Citation Formats

Pereira, Candido. Method for synthesizing pollucite from chabazite and cesium chloride. United States: N. p., 1999. Web.
Pereira, Candido. Method for synthesizing pollucite from chabazite and cesium chloride. United States.
Pereira, Candido. Fri . "Method for synthesizing pollucite from chabazite and cesium chloride". United States. https://www.osti.gov/servlets/purl/872162.
@article{osti_872162,
title = {Method for synthesizing pollucite from chabazite and cesium chloride},
author = {Pereira, Candido},
abstractNote = {A method for immobilizing waste chlorides salts containing radionuclides and hazardous nuclear material for permanent disposal, and in particular, a method for immobilizing waste chloride salts containing cesium, in a synthetic form of pollucite. The method for synthesizing pollucite from chabazite and cesium chloride includes mixing dry, non-aqueous cesium chloride with chabazite and heating the mixture to a temperature greater than the melting temperature of the cesium chloride, or above about 700.degree. C. The method further comprises significantly improving the rate of retention of cesium in ceramic products comprised of a salt-loaded zeolite by adding about 10% chabazite by weight to the salt-loaded zeolite prior to conversion at elevated temperatures and pressures to the ceramic composite.},
doi = {},
url = {https://www.osti.gov/biblio/872162}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {1}
}

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Works referenced in this record:

Immobilization of Cesium into Pollucite Structure by Hydrothermal Hot-Pressing
journal, January 1987


Hydrothermal Reactions of Zeolites Loaded with Cesium or Strontium
journal, February 1990


Surface Alteration of Pollucite under Hydrothermal Conditions
journal, September 1990


Distribution and Fixation of Cesium and Strontium in Zeolite A and Chabazite
journal, April 1985


Immobilization of Radioactive Wastes in Hydrothermal Synthetic Rock, (II): Hydrothermal Synthesis of Pollucite
journal, July 1984


Preparation and X-ray characterization of pollucite (CsAlSi2O6)
journal, January 1981