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Title: Method to synthesize dense crystallized sodalite pellet for immobilizing halide salt radioactive waste

Abstract

This report describes 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:
Publication Date:
Research Org.:
Argonne National Lab., IL (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
10192129
Patent Number(s):
PATENTS-US-A7943624
Application Number:
ON: DE95001782; PAN: 7-943,624;
Assignee:
Dept. of Energy
DOE Contract Number:  
W-31109-ENG-38
Resource Type:
Patent
Resource Relation:
Patent File Date: 1992 Sep 11; Other Information: PBD: 1992; Related Information: U. S. Patent No. 5,340,506 filed 08/23/1994.
Country of Publication:
United States
Language:
English
Subject:
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; RADIOACTIVE WASTES; RADIOACTIVE WASTE PROCESSING; INVENTIONS; CHLORIDES; CESIUM; STRONTIUM; ZEOLITES; VITRIFICATION; BENCH-SCALE EXPERIMENTS; BARIUM; SODIUM; ELECTROREFINING; 052001; WASTE PROCESSING

Citation Formats

Koyama, T. Method to synthesize dense crystallized sodalite pellet for immobilizing halide salt radioactive waste. United States: N. p., 1992. Web.
Koyama, T. Method to synthesize dense crystallized sodalite pellet for immobilizing halide salt radioactive waste. United States.
Koyama, T. Wed . "Method to synthesize dense crystallized sodalite pellet for immobilizing halide salt radioactive waste". United States. https://www.osti.gov/servlets/purl/10192129.
@article{osti_10192129,
title = {Method to synthesize dense crystallized sodalite pellet for immobilizing halide salt radioactive waste},
author = {Koyama, T},
abstractNote = {This report describes 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 = {1992},
month = {1}
}