Chalcopyrite leaching and bioleaching: An X-ray photoelectron spectroscopic (XPS) investigation on the nature of hindered dissolution
Yazarlar (4)
| Makale Türü | Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale) | ||
| Dergi Adı | Hydrometallurgy (Q1) | ||
| Makale Dili | – | Basım Tarihi | 10-2014 |
| Cilt / Sayı / Sayfa | 149 / 0 / 220–227 | DOI | – |
| Makale Linki | https://www.sciencedirect.com/science/article/pii/S0304386X14001832 | ||
| UAK Araştırma Alanları |
Dedektör Teknolojisi
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| Özet |
| Chalcopyrite (CuFeS2) is both the most economically important and the most difficult copper mineral to (bio)leach. The main reason for the slow rate of chalcopyrite dissolution is the formation of a layer on the surface of the mineral that hinders dissolution, termed “passivation”. The nature of this layer is still under debate. In this work, the role of bacterial activity was examined on the leaching efficiency of chalcopyrite by mimicking the redox potential conditions during moderately thermophilic bioleaching of a pure chalcopyrite concentrate in an abiotic experiment using chemical/electrochemical methods. The results showed that the copper recoveries were equal in the presence and absence of the mixed culture. It was found that the presence of bulk jarosite and elemental sulphur in the abiotic experiment did not hamper the copper dissolution compared to the bioleaching experiment. The leaching curves had no sign … |
| Anahtar Kelimeler |
