Microstructural evolution of UO2 pellets containing metallic particles of Ru, Rh and Pd during dissolution in nitric acid solution: 3D-ESEM monitoring.

Operando E-SEM, publication in Hydrometallurgy

Team LIME/LM2E
 

Dense pellets of UO2 incorporating PGMs particles with a microstructure similar to that of spent nuclear fuel (SNF) were prepared in laboratory. Dissolution tests in nitric acid, followed via 3D-ESEM technique, demonstrated that in the presence of PGMs, the uranium dissolution rate was increased and the induction period was shortened. 

Read the article with DOI : 10.1016/j.hydromet.2019.07.001
T. Cordara, S. Szenknect, R. Podor, V. Trillaud, L. Claparede, X. Le Goff, A. Mesbah, C. Lavalette, N. Dacheux, Hydrometallurgy. 188, (2019), 182