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Title: Physical, chemical, and structural evolution of zeolite-containing waste forms produced from metakaolinite and calcined HLW

Abstract

Natural and synthetic zeolites are extremely versatile materials. They can adsorb a variety of liquids and gases, and also take part in cation exchange reactions. Zeolites have the ability to sequester ions in lattice positions or within their networks of channels and voids. The zeolites can host alkali, alkaline earth and a variety of higher valence cations. As such they may be a viable alternative for immobilization of low activity waste (LAW) salts and calcines. The process for synthesizing zeolites is well documented for pure starting materials. A reactive aluminosilicate is reacted with an alkaline hydroxide at low temperature to form a zeolite. Processing time and temperature and specific reactants determine the type of zeolite formed. Zeolites are easy to make, and can be synthesized from a wide variety of natural and man made materials. However, relatively little is known about the process if one of the starting materials is a poorly characterized complex mixture of oxides (was te) containing nearly every element in the periodic table. The purpose of this work is to develop a clearer understanding of the advantages and limitations of producing a zeolite waste form from radioactive waste. Dr. M. W. Grutzeck at the Pennsylvania Statemore » University is investigating the production of a zeolite waste form using non-radioactive simulants. Dr. C. M. Jantzen and J. M. Pareizs at the Savannah River Technology Center will use the results from simulant work as a starting point for producing a zeolite waste form from an actual Savannah River Site radioactive waste stream.« less

Authors:
;
Publication Date:
Research Org.:
Savannah River Site (US)
Sponsoring Org.:
US Department of Energy (US)
OSTI Identifier:
756743
Report Number(s):
WSRC-TR-2000-00198
TRN: US0109242
DOE Contract Number:  
AC09-96SR18500
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 14 Jun 2000; PBD: 14 Jun 2000
Country of Publication:
United States
Language:
English
Subject:
12 MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; 36 MATERIALS SCIENCE; RADIOACTIVE WASTE PROCESSING; WASTE FORMS; ZEOLITES; PHYSICAL PROPERTIES; CHEMICAL PROPERTIES; MORPHOLOGY; HIGH-LEVEL RADIOACTIVE WASTES

Citation Formats

Pareizs, J.M., and Jantzen, C.M. Physical, chemical, and structural evolution of zeolite-containing waste forms produced from metakaolinite and calcined HLW. United States: N. p., 2000. Web. doi:10.2172/756743.
Pareizs, J.M., & Jantzen, C.M. Physical, chemical, and structural evolution of zeolite-containing waste forms produced from metakaolinite and calcined HLW. United States. doi:10.2172/756743.
Pareizs, J.M., and Jantzen, C.M. Wed . "Physical, chemical, and structural evolution of zeolite-containing waste forms produced from metakaolinite and calcined HLW". United States. doi:10.2172/756743. https://www.osti.gov/servlets/purl/756743.
@article{osti_756743,
title = {Physical, chemical, and structural evolution of zeolite-containing waste forms produced from metakaolinite and calcined HLW},
author = {Pareizs, J.M. and Jantzen, C.M.},
abstractNote = {Natural and synthetic zeolites are extremely versatile materials. They can adsorb a variety of liquids and gases, and also take part in cation exchange reactions. Zeolites have the ability to sequester ions in lattice positions or within their networks of channels and voids. The zeolites can host alkali, alkaline earth and a variety of higher valence cations. As such they may be a viable alternative for immobilization of low activity waste (LAW) salts and calcines. The process for synthesizing zeolites is well documented for pure starting materials. A reactive aluminosilicate is reacted with an alkaline hydroxide at low temperature to form a zeolite. Processing time and temperature and specific reactants determine the type of zeolite formed. Zeolites are easy to make, and can be synthesized from a wide variety of natural and man made materials. However, relatively little is known about the process if one of the starting materials is a poorly characterized complex mixture of oxides (was te) containing nearly every element in the periodic table. The purpose of this work is to develop a clearer understanding of the advantages and limitations of producing a zeolite waste form from radioactive waste. Dr. M. W. Grutzeck at the Pennsylvania State University is investigating the production of a zeolite waste form using non-radioactive simulants. Dr. C. M. Jantzen and J. M. Pareizs at the Savannah River Technology Center will use the results from simulant work as a starting point for producing a zeolite waste form from an actual Savannah River Site radioactive waste stream.},
doi = {10.2172/756743},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2000},
month = {6}
}

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