Role of microbial activity in bioleaching of a pyritic and a pure chalcopyrite concentrate
Yazarlar (3)
| Makale Türü | Özgün Makale (Uluslararası alan indekslerindeki dergilerde yayınlanan tam makale) | ||
| Dergi Adı | Advanced Materials Research | ||
| Makale Dili | – | Basım Tarihi | 12-2015 |
| Cilt / Sayı / Sayfa | 1130 / 0 / 209–213 | DOI | – |
| Makale Linki | https://www.scientific.net/AMR.1130.209 | ||
| UAK Araştırma Alanları |
Dedektör Teknolojisi
|
||
| Özet |
| Leaching of a pyritic and a pure chalcopyrite concentrate was carried out in stirred tank reactors in the absence and presence of a mixed culture of moderately thermophilic microorganisms at 45°C and pH 1.5. To study the effect of microbial activity on copper dissolution, the abiotic experiments were performed under accurately controlled redox potential conditions to reproduce the same oxidising conditions recorded during the bioleaching experiments. X-ray photoelectron spectrometry (XPS) was used to study the surface of chalcopyrite chips leached for different durations. The results showed that the microorganisms in cases of both concentrates did not have any effect in the copper leaching efficiency other than oxidation of ferrous to ferric ions. Biooxidation of elemental sulphur did not improve the leaching efficiency and bulk and surface jarosite had no negative effect on dissolution. A composite layer composed … |
| Anahtar Kelimeler |
