About this Abstract |
| Meeting |
MS&T26: Materials Science & Technology
|
| Symposium
|
Ceramics and Glasses for Nuclear Energy Applications
|
| Presentation Title |
Revisiting Radioiodine Sorbent Regeneration |
| Author(s) |
Karthikeyan Baskaran, Jade Beland, Paige Murray, Zac Flandermeyer, Judith Mendoza-Castro, Harmony S Werth, Sungsik Lee, Brian J Riley, Jeffrey D Rimer, Dev Chidambaram, Krista Carlson |
| On-Site Speaker (Planned) |
Zac Flandermeyer |
| Abstract Scope |
Three commercially available silver sorbents were investigated for regeneration and reuse as primary bed sorbents for radioiodine (I-129) during aqueous reprocessing of used nuclear fuel (UNF). IONEX Ag-400 (Ag-exchanged faujasite), IONEX NexSorb-99 (Ag-exchanged mordenite), and Clariant AC-6120 (Ag impregnated alumina) underwent cyclic iodine loading and regeneration to understand material performance. Ag-400 experienced the highest iodine uptake across all cycles, but the engineered form started to degrade after the first cycle due to AgI(s) formation during loading and transformation to Ag0(s) significantly decreasing mechanical stability. NexSorb-99 demonstrated moderate iodine uptake during cycling without observable change of the engineered form. AC-6120 exhibited the lowest iodine uptake and was also without observable change of the engineered form. NexSorb-99 and AC-6120, both demonstrated mechanical stability of the engineered form across cycling, AC-6120 had higher AgI(s) retention, indicating incomplete sorbent regeneration. The structure-property-performance relationship of the sorbents will be discussed. |