Figure 3

Oxidation Reduction Potential (ORP) (Left panel) and total (continuous lines) and ferrous iron (dotted lines) (Right panel) in chalcopyrite bioleaching assays in the presence of chloride ion (3 g/L) at 50°C. Sulfobacillus thermosulfidooxidans DSM 27601 strain Cutipay (▲); Sulfobacillus acidophilus DSM 10332 (♦); Control without inoculation (■).