Abstract
The kinetics of UO//2 dissolution in ammoniacal carbonate solutions were studied as a function of total carbonate concentration, oxygen pressure, temperature and pH value. The intrinsic leaching (no external potential) of UO//2 agreed well with an electrochemical surface-reaction model, in which anodic oxidation of UO//2 is coupled with cathodic reduction of oxygen. The experimenCtal data corroborate an anodic dissolution sequence that includes both charge-transfer and chemical-reaction steps. Experimental evidence indicates that the mechanism involves consecutive one-electron-transfer steps.
| Original language | English (US) |
|---|---|
| Pages (from-to) | c145-c152 |
| Journal | Transactions of the Institution of Mining and Metallurgy, Section C: Mineral Processing and Extractive Metallurgy |
| Volume | 88 |
| State | Published - Sep 1979 |
| Externally published | Yes |
ASJC Scopus subject areas
- General Chemistry
- Geotechnical Engineering and Engineering Geology
- Geochemistry and Petrology