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Title: Method for synthesizing pollucite from chabazite and cesium chloride

Abstract

A method is described for immobilizing waste chlorides salts containing radionuclides and hazardous nuclear material for permanent disposal, and in particular, a method is described 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 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. 3 figs.

Inventors:
Publication Date:
Research Org.:
Univ. of Chicago, IL (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
321234
Patent Number(s):
US 5,875,407/A/
Application Number:
PAN: 8-908,052; TRN: 99:003320
Assignee:
Dept. of Energy, Washington, DC (United States) PTO; SCA: 052001; PA: EDB-99:028682; SN: 99002064374
DOE Contract Number:  
W-31109-ENG-38
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 23 Feb 1999
Country of Publication:
United States
Language:
English
Subject:
05 NUCLEAR FUELS; RADIOACTIVE WASTE PROCESSING; CESIUM CHLORIDES; POLLUCITE; SYNTHESIS; SYNTHETIC ROCKS; ZEOLITES; CERAMICS; HEAT TREATMENTS

Citation Formats

Pereira, C. Method for synthesizing pollucite from chabazite and cesium chloride. United States: N. p., 1999. Web.
Pereira, C. Method for synthesizing pollucite from chabazite and cesium chloride. United States.
Pereira, C. Tue . "Method for synthesizing pollucite from chabazite and cesium chloride". United States.
@article{osti_321234,
title = {Method for synthesizing pollucite from chabazite and cesium chloride},
author = {Pereira, C.},
abstractNote = {A method is described for immobilizing waste chlorides salts containing radionuclides and hazardous nuclear material for permanent disposal, and in particular, a method is described 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 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. 3 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {2}
}