Isotopic signature of Cu and Fe during bioleaching and electrochemical leaching of a chalcopyrite concentrate
Yazarlar (6)
Mohammad Khoshkhoo
Åke Sandström
Ilia Rodushkin
Lena Alakangas
Björn Öhlander
| Makale Türü | Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale) | ||
| Dergi Adı | International Journal of Mineral Processing (Q1) | ||
| Makale Dili | – | Basım Tarihi | 01-2015 |
| Cilt / Sayı / Sayfa | 134 / 0 / 58–65 | DOI | – |
| Makale Linki | https://www.sciencedirect.com/science/article/pii/S0301751614001872 | ||
| UAK Araştırma Alanları |
Dedektör Teknolojisi
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| Özet |
| Bioleaching is an important process in metallurgy and in environmental sciences, either for the acquisition of metals or for the formation of acid rock drainage. In this study the implications of the processes during bioleaching of a pyritic chalcopyrite concentrate were analysed regarding its Cu and Fe isotope fractionation. The development of the redox potential during the bioleaching experiment was then simulated in an electrochemical cell in the absence of microorganisms to investigate the effect of microbial activity on the Cu and Fe isotope fractionations. The leaching experiments were performed for 28 days at 45 °C with a solid content of 2.5% (w/v) at pH 1.5. It was found that Cu dissolution efficiency was similar in both experiments and the leaching curves were linear with no sign of passivation due to the presence of pyrite. The heavy Cu isotope (δ65Cu) was leached more easily and as a result the leachate was … |
| Anahtar Kelimeler |
