Figure 2

Copper recovery in chalcopyrite bioleaching tests in the presence of chloride ion (3 g/L), incubation at 50°C and addition of Sulfobacillus thermosulfidooxidans DSM 27601 strain Cutipay (▲); Sulfobacillus acidophilus DSM 10332 (♦). A control without inoculation was included (■).