Actions for Development of Fundamental Data on Chemical Speciation and Solubility for Strontium and Americium in High- Level Waste [electronic resource] : Predictive Modeling of Phase Partitioning During Tank Processing

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Development of Fundamental Data on Chemical Speciation and Solubility for Strontium and Americium in High- Level Waste [electronic resource] : Predictive Modeling of Phase Partitioning During Tank Processing

Published
Washington, D.C. : United States. Dept. of Energy. Office of Environmental Management, 2001.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
vp : digital, PDF file
Additional Creators
Pacific Northwest National Laboratory (U.S.), United States. Department of Energy. Office of Environmental Management, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
In this research program, Pacific Northwest National Laboratory and Florida State University are investigating the speciation of Sr and Am/Cm in the presence of selected organic chelating agents (ethylenediaminetetraacetic acid [EDTA], N-(2-hydroxyethyl)ethylenediaminetriacetic acid [HEDTA], nitrilotriacetic acid [NTA], iminodiacetic acid [IDA], citrate, and oxalate) over ranges of hydroxide, carbonate, ionic strength, and competing metal ion concentrations present in high-level waste stored in tanks at Hanford and other U.S. Department of Energy (DOE) sites. The project comprises integrated research tasks that approach the problem of chemical speciation using macroscopic thermodynamic measurements of metal-ligand competition reactions, molecular modeling studies to identify structures or complexes of unusual stability, and mass spectrometry measurements of complex charge/mass ratio that can be applied to mixed metalchelate systems. This fundamental information then is used to develop thermodynamic models designed to predict changes in chemical speciation and solubility resulting from various tank processing conditions. In this way we can develop new approaches that address fundamental problems in aqueous speciation and, at the same time, provide useful and practical information needed for tank waste processing.
Report Numbers
E 1.99:emsp-73749--2001
emsp-73749--2001
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
06/01/2001.
"emsp-73749--2001"
Dixon, David A.; Choppin, Gregory; Felmy, Andrew R.
Type of Report and Period Covered Note
Annual; 06/01/2001 - 06/01/2001
Funding Information
FG07-02ER63222
EMSP 73749
View MARC record | catkey: 14139756