| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Seaborg Institutes: Emerging Topics in Actinide Materials and Science
|
| Presentation Title |
Organic Diluent Radiolysis and the Impact of f-element Complexation on Ligand Stability for Spent Nuclear Fuel Reprocessing |
| Author(s) |
Jacy K. Conrad, Stephen P. Mezyk, Cristian Celis-Barros, Andrew Cook, Gregory P. Holmbeck |
| On-Site Speaker (Planned) |
Jacy K. Conrad |
| Abstract Scope |
Used nuclear fuel reprocessing utilizes liquid organic molecules as solvents, complexing ligands, and additives, such as phase modifiers. These components are constantly exposed to intense ionizing radiation fields, which promote the formation of short-lived, reactive radical transients that lead to solvent and solute destruction and the formation of often problematic degradation products. The fundamental chemistry of these radiation-induced transient species is not well-known. Here, we present coupled steady-state and time resolved irradiation results for the elucidation of the processes underpinning transient organic radical reactivity and kinetics at the molecular level in irradiated dodecane, the prototypical reprocessing solvent, including the impact of lanthanide ion complexation and temperature on the reactivity of N,N,N′,N′-tetraoctyl diglycolamide (TODGA) with the dodecane radical cation. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, Extraction and Processing, Recycling and Secondary Recovery |