Bioleaching of pollymetallic sulphide concentrate using thermophilic bacteria
An extreme thermophilic, iron-sulphur oxidising bacterial culture was isolated and adapted to tolerate high metal and solids concentrations at 70°C. Following isolation and adaptation, the culture was used in a batch bioleach test employing a 5-l glass standard magnetic agitated and aerated...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Association of Chemical Engineers of Serbia
2014-01-01
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| Series: | Hemijska Industrija |
| Subjects: | |
| Online Access: | http://www.doiserbia.nb.rs/img/doi/0367-598X/2014/0367-598X1300087V.pdf |
| Summary: | An extreme thermophilic, iron-sulphur oxidising bacterial culture was
isolated and adapted to tolerate high metal and solids concentrations at
70°C. Following isolation and adaptation, the culture was used in a batch
bioleach test employing a 5-l glass standard magnetic agitated and aerated
reactor, for the bioleaching of a copper-lead-zinc collective concentrate.
The culture exhibited stable leach performance over the period of leach
operation and overall copper and zinc extractions higher than 97%. Lead
sulphide is transformed into lead sulphate remaining in the bioleach residue
due to the low solubility in sulphate media. Brine leaching of bioleach
residue yields 95% lead extraction. [Projekat Ministarstva nauke Republike
Srbije, br. 34023] |
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| ISSN: | 0367-598X 2217-7426 |