Strontium-90 Liquid Concentration Solubility Correlation in the Hanford Tank Waste Operations Simulator

Hohl, T.M.; Place, D.E.; Wittman, Richard S.

doi:10.2172/828017

Cited by 1 publication

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“…Reactions of the 101-SY simulated waste mixture were studied using a tubular flow reactor. The recipe for the simulant was obtained from Westinghouse Hanford Corporation [5] and assumes that the waste will be diluted 3-to-1 with water before it is treated. All experiments used the concentrations given in Table I.…”

Section: Experimental Methodsmentioning

confidence: 99%

Reduction of Nitrate and Nitrite Salts Under Hydrothermal Conditions

Foy¹,

Dell`Orco²,

Wilmanns³

et al. 2023

Proceeding of Physical Chemistry of Aqueous Systems: Meeting the Needs of Industry

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The feasibility of reducing nitratelnitrite salts under hydrothermal conditions for the treatment of aqueous mixed wastes stored in the underground tanks at the Department of Energy site at Hanford, Washington was studied. The reduction of nitrate and nitrite salts by reaction with EDTA using a tank waste simulant was examined at temperatures between 623K and 800K and pressures between 0.6 and 1.2 kbar. Continuous flow reactors were used to determine kinetics and products of reactions. All reactions were studied under pressures high enough to produce single phase conditions. The reactions aqe rapid, go to completion in less than a minute, and produce simple products, such as carbonate, nitrogen, and nitrous oxide gases. The experimental results demonstrate the ability of chemical reactions under hydrothermal conditions to reduce the nitrate and nitrite salts and destroy organic compounds in the waste mixtures.

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Section: Experimental Methodsmentioning

confidence: 99%