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| Ertürk, Emre |
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| Petrov, R. H. | Madrid |
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| Azevedo, Nuno Monteiro |
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Fondeur, Fernando F.
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report
Hanford Supplemental Low Activity Waste Simulant Evaporation Testing for Removal of Organics
Abstract
The Hanford site has approximately 56 million gallons of radioactive waste stored in 177 underground storage tanks. The Hanford Waste Treatment and Immobilization Plant (WTP) is being built to treat and immobilize the tank waste. The baseline method for immobilization of Low Activity Waste (LAW) is vitrification, but additional immobilization capacity is likely needed to supplement the initial melters. An alternative cementitious waste form is being investigated for that future supplemental immobilization method.However, one impediment to a cementitious waste form is the presence of Land Disposal Restricted (LDR) organic chemicals in tank waste. Developing a method to remove the organics would eliminate that impediment to permit possible use of a cementitious waste form. Savannah River National Laboratory(SRNL) performed testing to examine evaporation as a method to remove some prevalent organics from the Supplemental LAW (SLAW) stream. Samples of product streams from the evaporation were analyzed to determine partitioning of the organics.Modeling was also performed to determine if the experimental andmodelingresultsmatched. A description of the experimental details, equipment, and results of that testing are included in this report.The work is intended to inform future SLAWflowsheet development activities and gather useful data about the partitioning of constituents through a possible SLAW feed evaporator.