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Pyrite oxidation and copper sulfide ore leaching by halotolerant, thermotolerant bacteria
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Norris, P. R., Davis-Belmar, C. S., Nicolle, J. Le C., Calvo-Bado, Leo A. and Angelatou, V. (2010) Pyrite oxidation and copper sulfide ore leaching by halotolerant, thermotolerant bacteria. In: 18th International Biohydrometallurgy Symposium, Bariloche, Argentina, September 13-17, 2009. Published in: Hydrometallurgy, Vol.104 (No.3-4). pp. 432-436. doi:10.1016/j.hydromet.2010.03.025 ISSN 0304-386X.
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Official URL: http://dx.doi.org/10.1016/j.hydromet.2010.03.025
Abstract
Pyrite oxidation was observed in a mixed culture of salt-tolerant, thermotolerant, acidophilic bacteria from warm, acidic, coastal sediments of the island of Milos (Greece). Analysis of 16S rRNA gene sequences cloned from DNA extracted from the mixed culture indicated two species which were related to Thiobacillus prosperus. One of the sequences was found previously in warm, sediment samples from the island of Vulcano (Italy). Iron solubilization from pyrite by the Milos culture at 47 degrees C was most rapid in the presence of NaCl at 30 g l(-1). A novel species was isolated from the mixed culture and grew in pure culture on pyrite with 50 g l(-1) NaCl, but iron solubilization was most rapid at just below 50 degrees C with 20 g l(-1) NaCl. Establishment of activity of the halotolerant, thermotolerant bacteria in copper sulfide ore leaching columns was more difficult than with related bacteria growing at lower temperatures. (c) 2010 Elsevier B.V. All rights reserved.
| Item Type: | Conference Item (UNSPECIFIED) | ||||
|---|---|---|---|---|---|
| Subjects: | T Technology > TN Mining engineering. Metallurgy | ||||
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Life Sciences (2010- ) > Biological Sciences ( -2010) | ||||
| Journal or Publication Title: | Hydrometallurgy | ||||
| Publisher: | Elsevier BV | ||||
| ISSN: | 0304-386X | ||||
| Official Date: | October 2010 | ||||
| Dates: |
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| Volume: | Vol.104 | ||||
| Number: | No.3-4 | ||||
| Number of Pages: | 5 | ||||
| Page Range: | pp. 432-436 | ||||
| DOI: | 10.1016/j.hydromet.2010.03.025 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access | ||||
| Title of Event: | 18th International Biohydrometallurgy Symposium | ||||
| Type of Event: | Other | ||||
| Location of Event: | Bariloche, Argentina | ||||
| Date(s) of Event: | September 13-17, 2009 |
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