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Dissolution of uraninite in acid solutions

✍ Scribed by Tariq M. Bhatti; Antti Vuorinen; Martti Lehtinen; Olli H. Tuovinen

Publisher
Wiley (John Wiley & Sons)
Year
1998
Tongue
English
Weight
209 KB
Volume
73
Category
Article
ISSN
0268-2575

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✦ Synopsis

The purpose of this work was to assess the oxidative dissolution of uranium from a uraninite-containing rock in acid sulfate solutions under test conditions relevant to uranium leach mines and acid mine waters. Uranium dissolution in acidiÐed mineral salts solution was slow and the predominant carbonate mineral (rhodochrosite) in the rock sample continued to consume acid. Bacterial inoculation (T hiobacillus ferrooxidans) and additional Fe2`or S0 were tested in e †orts to enhance the dissolution. Addition of Fe enhanced the solubilization of uranium, whereas S-addition had little incremental e †ect on the dissolution with and without bacterial inoculation.

1998 Society of Chemical ( Industry

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