| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
High Temperature Electrochemistry V
|
| Presentation Title |
Study of Potentiometry for Monitoring Activity of GdCl3 in Molten LiCl-KCl Salt |
| Author(s) |
Guoping Cao, Steven Herrmann, Guy Fredrickson, Robert Hoover |
| On-Site Speaker (Planned) |
Guoping Cao |
| Abstract Scope |
In pyroprocessing spent nuclear fuels by electrorefining in molten LiCl-KCl salt, it is desired to monitor in real time the UCl3 concentration in the salt for safeguards purposes. Current chemical analysis of the highly radioactive salt for electrorefining by an inductively coupled plasma technique is inconvenient and usually time-consuming in generating the salt composition results. In this paper, we evaluated whether a simple potentiometry approach can be used for real-time monitoring the concentration of GdCl3, which was used as a surrogate for UCl3, in LiCl-KCl-GdCl3 salt by measuring the open circuit potential of a Gd metal electrode with respect to a Ag/AgCl reference electrode (RE) when GdCl3 salt was incrementally added to the LiCl-KCl salt. Additions of LaCl3, CeCl3 and NdCl3 salts were used for evaluating the effects of other chloride salts on the selectivity of the Gd metal electrode versus Ag/AgCl RE. |
| Proceedings Inclusion? |
Planned: |