Removal of Iodide from LiF-BeF<sub>2</sub> Melts by HF-H<sub>2</sub> Sparging—An Application to Iodine Removal from Molten Salt Breeder Reactor Fuel

Baes, C.F.; Wichner, R.P.; Bamberger, C.E.; Freasier, B. F.

doi:10.13182/nse75-a26685

Cited by 6 publications

(1 citation statement)

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“…They compared the mixed fluoridefluoroborate system with the mixed fluoride-iodide system and found that smaller cations resulted in less negative deviations from ideality, providing the conclusion that it is the changes in anion packing that cause the positive deviations from ideality: [74] redox conditions and existence of reducing species such as U 3+ ), the formation of "probably BeI2 or BeIF" species were not considered to be especially volatile [16]. The removal of iodide from fuel salts using HF-H2 gas mixtures was studied multiple times throughout the MSRP [52,77,78]. It was found that iodine can be easily volatilized by sparging hydrogen fluoride-hydrogen gas mixtures.…”

Section: Iodinementioning

confidence: 99%

Thermochemical Modeling in Molten Fluoride Salts for Radionuclide Speciation

Shahbazi

Bucknor

Thomas

et al. 2021

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An important aspect of the licensing process for nuclear reactors is providing a reasonable assurance of safety to the general public. This includes modeling potential radionuclide releases from the reactor during normal operations and accident scenarios, which is known as the reactor's source term. A new class of advanced (non-LWR) reactors are being developed which use molten salts as the coolant fluid. Because the molten salt coolant represents a credited barrier for radionuclide transport between the fuel and the environment, a necessary aspect of mechanistic source term (MST) analysis for the KP-FHR is modeling the thermochemistry of molten salts. Provided here is a review of the theory of the thermodynamic principles governing multicomponent phase equilibria, the background of molten salt thermochemistry research, and a summary of the thermochemical data relevant to the KP-FHR coolant salt, Li2BeF4, commonly referred to as "FLiBe". A review of literature is followed by a brief introduction to methods that can be used to model the thermochemical behavior of molten salt mixtures. The methodology outlined is based on the use of a commercial thermodynamic modeling software called FactSage, which is one of only a few available softwares based on the modified quasichemical model (MQM), which is the recommended solution model for molten salts.

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Section: Iodinementioning

confidence: 99%