Effects of Thiobacillus Ferrooxidans on Barium-radium Sulfate in Uranium Mill Tailings.
Perez-J; Torma-AE; Itzkovitch-IJ
Recent Progress in Biohydrometallurgy 1983 :14 pages
The influence of bacteria, thiobacillus ferrooxidans, on the stability of barium-radium sulfate precipitate present in treated synthetic and actual uranium mill tailings slurries was investigated. The radium-226 concentration was found to be lower in the inoculated leach suspensions than it was in the sterile controls. One explanation for this is the production of ferric sulfate and sulfuric acid by bacterial oxidation of pyrite contained in tailings. The excess of sulfate concentration resulted in a decrease in the dissociation of the barium-radium sulfate and as a consequence in the lowering of concentration of dissolved radium- 226.
IH; Final Contract Report;
Recent Progress in Biohydrometallurgy 1983
New Mexico Inst. Min. and Technology