Release of 226Ra from uranium mill tailings by microbial Fe(III) reduction
Applied Geochemistry
By: E. R. Landa, E. J. P. Phillips, and D. R. Lovley
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Abstract
Uranium mill tailings were anaerobically incubated in the presence of H2 with Alteromonas putrefaciens, a bacterium known to couple the oxidation of H2 and organic compounds to the reduction of Fe(III) oxides. There was a direct correlation between the extent of Fe(III) reduction and the accumulation of dissolved226Ra. In sterile tailings in which Fe(III) was not reduced, there was negligible leaching of226Ra. The behavior of Ba was similar to that of Ra in inoculated and sterile systems. These results demonstrate that under anaerobic conditions, microbial reduction of Fe(III) may result in the release of dissolved226Ra from uranium mill tailings.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Release of 226Ra from uranium mill tailings by microbial Fe(III) reduction |
| Series title | Applied Geochemistry |
| DOI | 10.1016/0883-2927(91)90075-Z |
| Volume | 6 |
| Issue | 6 |
| Year Published | 1991 |
| Language | English |
| Publisher | Elsevier |
| Description | 6 p. |
| First page | 647 |
| Last page | 652 |
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