Effects of quartz addition on chalcopyrite bioleaching in shaking flasks |
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| Affiliation: | 1. Department of Nuclear Engineering, Faculty of Advance Sciences and Technologies, University of Isfahan, Isfahan 81746-73441, Iran;2. Department of Physics, Faculty of Science, University of Isfahan, Isfahan 81747-73441, Iran;3. Department of Chemistry, University of Isfahan, Isfahan 81747-73441, Iran |
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| Abstract: | This paper studies the effects of quartz on bioleaching of chalcopyrite by Acidithiobacillus ferrooxidans, LD-1 through shaking flask experiments. The results showed that quartz concentration can affect the copper extraction. After 32 days, copper extraction of the leaching system at 50 g L−1 quartz concentration increased by about 20%, compared with that of the leaching system without quartz. XRD analysis showed that the amounts of jarosite on the chalcopyrite surface may reduce by the mechanical friction action between fine particles of quartz and chalcopyrite. The analysis of SEM indicated that the surfaces of chalcopyrite particles were eroded by different degrees and the degrees of change were the same as the effects of quartz concentration on copper extraction. |
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| Keywords: | Quartz Bioleaching Chalcopyrite Copper extraction |
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