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Impact of Aluminate Ions on the Properties of Saltstone Grout Mixes.

DE2008927410

Publication Date	2008
Personal Author	Harbour, J. R.; Edwards, T. B.; Hansen, E. K.; Williams, V. J.
Page Count	7
Abstract	It is important to identify and control the operational and compositional variables that impact the important processing and performance properties of Saltstone grout mixes. The grout that is produced at the Saltstone Production Facility (SPF) is referred to as Saltstone and is a waste form that immobilizes low concentrations of radionuclides as well as certain toxic metals. The Saltstone will be disposed of in vaults at Savannah River Site (SRS). An effort referred to as the Saltstone Variability Study has been initiated to achieve this goal. The protocols developed in this variability study are also ideally suited as a tool to assess the impact of proposed changes to the processing flow sheet for Liquid Waste Operations at SRS. One such proposal that is currently under consideration is to introduce a leaching step in the treatment of the High Level Waste (HLW) sludge to remove aluminum prior to vitrification at the Defense Waste Processing Facility (DWPF). This leachate would significantly increase the soluble aluminate concentration in the salt feed that will be processed at the SPF. Consequently, an initial study of the impact of increased aluminate concentration on the Saltstone grout properties was performed. Prior work by Lukens (1) showed that aluminate in the salt solutions increases the amount of heat generation.
Keywords	Radioactive waste management Grouting Waste forms Aluminates Aluminium Productin Radioisotopes Vitrification Waste processing Sludges Flowsheets Leachates Leaching Liquid wastes Performance Processing Saltstone grout mixes Savannah River Plant Toxic metals
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Savannah River National Lab., Aiken, SC.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200824

Impact of Aluminate Ions on the Properties of Saltstone Grout Mixes.

Impact of Aluminate Ions on the Properties of Saltstone Grout Mixes.
DE2008927410

Publication Date	2008
Personal Author	Harbour, J. R.; Edwards, T. B.; Hansen, E. K.; Williams, V. J.
Page Count	7
Abstract	It is important to identify and control the operational and compositional variables that impact the important processing and performance properties of Saltstone grout mixes. The grout that is produced at the Saltstone Production Facility (SPF) is referred to as Saltstone and is a waste form that immobilizes low concentrations of radionuclides as well as certain toxic metals. The Saltstone will be disposed of in vaults at Savannah River Site (SRS). An effort referred to as the Saltstone Variability Study has been initiated to achieve this goal. The protocols developed in this variability study are also ideally suited as a tool to assess the impact of proposed changes to the processing flow sheet for Liquid Waste Operations at SRS. One such proposal that is currently under consideration is to introduce a leaching step in the treatment of the High Level Waste (HLW) sludge to remove aluminum prior to vitrification at the Defense Waste Processing Facility (DWPF). This leachate would significantly increase the soluble aluminate concentration in the salt feed that will be processed at the SPF. Consequently, an initial study of the impact of increased aluminate concentration on the Saltstone grout properties was performed. Prior work by Lukens (1) showed that aluminate in the salt solutions increases the amount of heat generation.
Keywords	Radioactive waste management Grouting Waste forms Aluminates Aluminium Productin Radioisotopes Vitrification Waste processing Sludges Flowsheets Leachates Leaching Liquid wastes Performance Processing Saltstone grout mixes Savannah River Plant Toxic metals
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Savannah River National Lab., Aiken, SC.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200824