A solution density model for hanford waste treatment plant supernatants

Conference · Sun Jul 01 04:00:00 EDT 2007

OSTI ID:21294684

Reynolds, J G; Bernards, J K ^[1]; Carter, R ^[2]

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1. Washington Group International, Richland, WA (United States)
2. Energy Solutions, Richland, WA (United States)

The density of nuclear waste solution is used as a process control parameter in the Hanford Waste Treatment Plant pretreatment process and is crucial to tank utilization evaluations. The supernatants, however, have many different dissolved sodium salts, including nitrate, nitrite, carbonate, sulfate, phosphate, hydroxide, and aluminate. The large concentrations and diversity of salts in the waste has made the predictions of solution densities difficult historically. The purpose of this study is to determine if a new model of multi-component electrolyte solution densities, recently published in the literature, is effective at predicting the density of nuclear waste supernatants. A statistically designed set of solution densities containing the most prevalent electrolytes in Hanford tank waste was used for model validation. The densities of the simulants were calculated by the model and compared to the experimentally determined densities. The average model error was just 0.1%. These results indicate that the model can be used to accurately predict the density of nuclear waste processed at the Hanford Waste Treatment Plant. (authors)

• Research Organization: WM Symposia, 1628 E. Southern Avenue, Suite 9 - 332, Tempe, AZ 85282 (United States)
• OSTI ID: 21294684
• Report Number(s): INIS-US--09-WM-07297
• Country of Publication: United States
• Language: English

Related Subjects

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
ALUMINATES
CARBONATES
HANFORD RESERVATION
HYDROXIDES
NITRATES
NITRITES
PHOSPHATES
PROCESS CONTROL
RADIOACTIVE WASTE FACILITIES
RADIOACTIVE WASTE PROCESSING
RADIOACTIVE WASTES
SALTS
SIMULATION
SODIUM COMPOUNDS
SULFATES
TANKS
VALIDATION