| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials and Chemistry for Molten Salt Systems
|
| Presentation Title |
Gaseous Fission Product Scrubbing using Eutectic NaOH-KOH Molten Salts |
| Author(s) |
Lukas Metzger, Jinsuo Zhang |
| On-Site Speaker (Planned) |
Lukas Metzger |
| Abstract Scope |
The use of eutectic NaOH-KOH molten salts has been explored in off-gas treatment systems due to their reactivity with fission products present in the cover-gas region of contemporary and advanced reactors. This study presents a novel system for generating and capturing gaseous halogen, alkali metal, and alkali metal fission products and evaluates its effectiveness at temperatures similar to those of proposed off-gas scrubbing systems. The effectiveness of NaOH-KOH molten salt’s retention capability was verified using Inductively Coupled Plasma Mass Spectrometry (ICP-MS), as well as comparisons to best- and worst-case empirical models for evaporation kinetics and gas-liquid mass transfer. Fission product chemistry within NaOH-KOH molten salt was thoroughly investigated using large-scale dissolution experiments and various materials characterization techniques. Using this information, the effectiveness of this system was assessed for use in experimental facilities that determine the source term for advanced reactors. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, Characterization, |