Method to synthesize dense crystallized sodalite pellet for immobilizing halide salt radioactive waste
Abstract
A method for immobilizing waste chloride salts containing radionuclides such as cesium and strontium and hazardous materials such as barium. A sodalite intermediate is prepared by mixing appropriate amounts of silica, alumina and sodium hydroxide with respect to sodalite and heating the mixture to form the sodalite intermediate and water. Heating is continued to drive off the water to form a water-free intermediate. The water-free intermediate is mixed with either waste salt or waste salt which has been contacted with zeolite to concentrate the radionuclides and hazardous material. The waste salt-intermediate mixture is then compacted and heated under conditions of heat and pressure to form sodalite with the waste salt, radionuclides and hazardous material trapped within the sodalite cage structure. This provides a final product having excellent leach resistant capabilities.
- Inventors:
-
- Tokyo, JP
- Issue Date:
- Research Org.:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- OSTI Identifier:
- 869459
- Patent Number(s):
- 5340506
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Classifications (CPCs):
-
G - PHYSICS G21 - NUCLEAR PHYSICS G21F - PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10S - TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- DOE Contract Number:
- W-31109-ENG-38
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- method; synthesize; dense; crystallized; sodalite; pellet; immobilizing; halide; salt; radioactive; waste; chloride; salts; containing; radionuclides; cesium; strontium; hazardous; materials; barium; intermediate; prepared; mixing; appropriate; amounts; silica; alumina; sodium; hydroxide; respect; heating; mixture; form; water; continued; drive; water-free; mixed; contacted; zeolite; concentrate; material; salt-intermediate; compacted; heated; conditions; heat; pressure; trapped; cage; structure; provides; final; product; excellent; leach; resistant; capabilities; waste chloride; sodium hydroxide; hazardous material; radioactive waste; hazardous materials; chloride salt; chloride salts; final product; containing radionuclides; salts containing; halide salt; immobilizing waste; leach resistant; /588/210/423/502/
Citation Formats
Koyama, Tadafumi. Method to synthesize dense crystallized sodalite pellet for immobilizing halide salt radioactive waste. United States: N. p., 1994.
Web.
Koyama, Tadafumi. Method to synthesize dense crystallized sodalite pellet for immobilizing halide salt radioactive waste. United States.
Koyama, Tadafumi. Sat .
"Method to synthesize dense crystallized sodalite pellet for immobilizing halide salt radioactive waste". United States. https://www.osti.gov/servlets/purl/869459.
@article{osti_869459,
title = {Method to synthesize dense crystallized sodalite pellet for immobilizing halide salt radioactive waste},
author = {Koyama, Tadafumi},
abstractNote = {A method for immobilizing waste chloride salts containing radionuclides such as cesium and strontium and hazardous materials such as barium. A sodalite intermediate is prepared by mixing appropriate amounts of silica, alumina and sodium hydroxide with respect to sodalite and heating the mixture to form the sodalite intermediate and water. Heating is continued to drive off the water to form a water-free intermediate. The water-free intermediate is mixed with either waste salt or waste salt which has been contacted with zeolite to concentrate the radionuclides and hazardous material. The waste salt-intermediate mixture is then compacted and heated under conditions of heat and pressure to form sodalite with the waste salt, radionuclides and hazardous material trapped within the sodalite cage structure. This provides a final product having excellent leach resistant capabilities.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1994},
month = {1}
}