Effect of carbon dioxide concentration on the bioleaching of a pyrite-arsenopyrite ore concentrate |
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| Authors: | Nagpal S Dahlstrom D Oolman T |
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| Affiliation: | Department of Chemical Engineering, 3290 Merrill Engineering Building, University of Utah, Salt Lake City, Utah 84112. |
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| Abstract: | The effect of carbon dioxide concentration on the bacterial leaching of a pyrite-arsenopyrite ore concentrate was studied in continuous-flow reactors. Steady-state operation with two feed slurry densities, 6 wt% and 16 wt% solids, were tested for the effect of carbon dioxide concentration. Bacterial growth rates were estimated via the measurement of carbon dioxide consumption rates. Aqueous-phase carbon dioxide concentrations in excess of 10 mg/L were found to be inhibitory to bacterial growth. (c) 1993 John Wiley & Sons, Inc. |
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| Keywords: | Thiobacillus ferrooxidans carbon dioxide uptake carbon dioxide inhibition bacterial leaching |
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