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Title: Method of preparing sodalite from chloride salt occluded zeolite

Abstract

A method is described for immobilizing waste chloride salts containing radionuclides and hazardous nuclear material for permanent disposal starting with a substantially dry zeolite and sufficient glass to form leach resistant sodalite with occluded radionuclides and hazardous nuclear material. The zeolite and glass are heated to a temperature up to about 1000 K to convert the zeolite to sodalite and thereafter maintained at a pressure and temperature sufficient to form a sodalite product near theoretical density. Pressure is used on the formed sodalite to produce the required density.

Inventors:
;
Issue Date:
Research Org.:
Univ. of Chicago, IL (United States)
OSTI Identifier:
458577
Patent Number(s):
5,613,240
Application Number:
PAN: 8-375,141; TRN: 97:006790
Assignee:
Dept. of Energy, Washington, DC (United States)
DOE Contract Number:  
W-31109-ENG-38
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 18 Mar 1997
Country of Publication:
United States
Language:
English
Subject:
05 NUCLEAR FUELS; CHLORIDES; SOLIDIFICATION; WASTE FORMS; RADIOACTIVE WASTE PROCESSING; HAZARDOUS MATERIALS; ZEOLITES; SODIUM SILICATES; ALUMINIUM SILICATES; PRESSURIZATION; RADIOACTIVE WASTE DISPOSAL

Citation Formats

Lewis, M A, and Pereira, C. Method of preparing sodalite from chloride salt occluded zeolite. United States: N. p., 1997. Web.
Lewis, M A, & Pereira, C. Method of preparing sodalite from chloride salt occluded zeolite. United States.
Lewis, M A, and Pereira, C. Tue . "Method of preparing sodalite from chloride salt occluded zeolite". United States.
@article{osti_458577,
title = {Method of preparing sodalite from chloride salt occluded zeolite},
author = {Lewis, M A and Pereira, C},
abstractNote = {A method is described for immobilizing waste chloride salts containing radionuclides and hazardous nuclear material for permanent disposal starting with a substantially dry zeolite and sufficient glass to form leach resistant sodalite with occluded radionuclides and hazardous nuclear material. The zeolite and glass are heated to a temperature up to about 1000 K to convert the zeolite to sodalite and thereafter maintained at a pressure and temperature sufficient to form a sodalite product near theoretical density. Pressure is used on the formed sodalite to produce the required density.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1997},
month = {3}
}