Bioleaching of djurleite using Acidithiobacillus ferrooxidans
| Autor: | Xiao-lan Mo, Kai-bin Fu, Yingbo Dong, Huang Cheng, Hai Lin |
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| Rok vydání: | 2013 |
| Předmět: |
Djurleite
Shake flask Chemistry Scanning electron microscope Mechanical Engineering Metallurgy General Chemistry engineering.material Geotechnical Engineering and Engineering Geology Acidithiobacillus ferrooxidans Copper extraction techniques X-ray photoelectron spectroscopy Control and Systems Engineering Bioleaching engineering Leaching (metallurgy) Nuclear chemistry |
| Zdroj: | Minerals Engineering. 40:38-41 |
| ISSN: | 0892-6875 |
| DOI: | 10.1016/j.mineng.2012.09.018 |
| Popis: | The bioleaching of djurleite using Acidithiobacillus ferrooxidans (LD-1) was investigated in this paper. Experiments were carried out in shake flasks at pH 2.0, 160 r/min and 30 °C. The leaching residues were analyzed using X-ray diffraction (XRD), Scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). The total copper extraction of djurleite under optimal condition reached 95.12%. The XRD analysis indicated the residues mainly consisted of ammoniojarosites and S 8 . It was observed by the SEM image that the djurleite was heavily etched. The XPS results confirmed the intermediate product formed during djurleite leaching was CuS. The result indicates the reaction pathway is: Cu 31 S 16 → CuS → tCu 2+ and S 0 . |
| Databáze: | OpenAIRE |
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