Bioleaching of uranium from low grade black schists by Acidithiobacillus ferrooxidans
- Authors
- Choi, MS; Cho, KS; Kim, DS; Ryu, HW
- Issue Date
- Apr-2005
- Publisher
- SPRINGER
- Keywords
- Acidithiobacillus ferrooxidans; bioleaching; black schist; uranium
- Citation
- WORLD JOURNAL OF MICROBIOLOGY & BIOTECHNOLOGY, v.21, no.3, pp.377 - 380
- Journal Title
- WORLD JOURNAL OF MICROBIOLOGY & BIOTECHNOLOGY
- Volume
- 21
- Number
- 3
- Start Page
- 377
- End Page
- 380
- URI
- http://scholarworks.bwise.kr/ssu/handle/2018.sw.ssu/19383
- DOI
- 10.1007/s11274-004-3627-9
- ISSN
- 0959-3993
- Abstract
- The feasibility of bacterial recovery of uranium from the low grade black schists occurring in the Okcheon district, South Korea, was investigated. Following the introduction of Acidithiobacillus ferrooxidans, 80% of the uranium could be extracted from the schists, which contain 0.01% U3O8 by weight, within 60 h at a pulp density of 100 g-ore/l. Only 18% of the uranium was extracted without microbial activity. The uranium-leaching efficiency was not greatly affected by the addition of Fe2+ in the range of 5-9 g/l, and the leaching efficiency of uranium from the schists by A. ferrooxidanscould be efficiently maintained at high pulp densities (up to 500 g-ore/l).
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