| dc.creator |
AKÇİL, Ata Utku |
|
| dc.creator |
ÇİFTÇİ, Hasan |
|
| dc.date |
2013-05-31T21:00:00Z |
|
| dc.date.accessioned |
2020-10-06T09:49:29Z |
|
| dc.date.available |
2020-10-06T09:49:29Z |
|
| dc.identifier |
47ff03e5-6ffb-4fd4-b86a-c9814df3fd5d |
|
| dc.identifier |
10.1016/j.mineng.2013.03.020 |
|
| dc.identifier |
https://avesis.sdu.edu.tr/publication/details/47ff03e5-6ffb-4fd4-b86a-c9814df3fd5d/oai |
|
| dc.identifier.uri |
http://acikerisim.sdu.edu.tr/xmlui/handle/123456789/59090 |
|
| dc.description |
The first laboratory tests on biooxidation and cyanidation of gold ores in Turkey were carried out using samples of the Copier Gold Mine. Over a 3 year R&D test period, mixed bacterial/archaeal cultures improved biooxidation of the Copier ore. The highest sulphide oxidation of 87.35% over 432 h was achieved in shake flasks in the presence of the mixed culture (MODM: Sulfolobus acidophilus and Sulfolobus thermosulfidooxidans). Bioreactor tests resulted in greater dissolution rates for iron and arsenic than did shake-flask tests, which led to a greater extent of sulphide oxidation within a shorter period of time. The maximum sulphide oxidation in the bioreactor tests was 97.79% after 240 h when the EXTM (Acidianus brierleyi and Sulfolobus metallicus) mixed culture was used. After the biooxidation experiments with solids contents of 10% and 20% (w/v), the gold recovery from the oxidised ore was lower than that achieved in the presence of 5% solids (w/v) because the extent of sulphide oxidation was reduced as the pulp density increased. A strong correlation between the sulphide oxidation and gold recovery was also established. The highest gold recovery of 94.48% was achieved during cyanidation from the biooxidised ore produced from the experiment conducted using the EXTM mixed culture. (C) 2013 Elsevier Ltd. All rights reserved. |
|
| dc.language |
eng |
|
| dc.rights |
info:eu-repo/semantics/closedAccess |
|
| dc.title |
Biohydrometallurgy in Turkish gold mining: First shake flask and bioreactor studies |
|
| dc.type |
info:eu-repo/semantics/article |
|