Research Article
Bioleaching of Arsenic-Rich Gold Concentrates by Bacterial Flora before and after Mutation
Figure 2
Mutation experiments with two combined mutation factors. (a) UV+ultrasonic (D1: UV 60 s + ultrasonic 10 min, D2: UV 60 s + ultrasonic 20 min, D3: UV 60 s + ultrasonic 30 min, D4: UV 120 s + ultrasonic 10 min, D5: UV 120 s + ultrasonic 20 min, D6: UV 120 s + ultrasonic 30 min, D7: UV 180 s + ultrasonic 10 min, D8: UV 180 s + ultrasonic 20 min, and D9: UV 180 s + ultrasonic 30 min), (b) UV + microwave (E1: UV 60 s + microwave 10 s, E2: UV 120 s + microwave 10 s, E3: UV 180 s + microwave 10 s, E4: UV 60 s + microwave 20 s, E5: UV 120 s + microwave 20 s, E6: UV 180 s + microwave 20 s, E7: UV 60 s + microwave 30 s, E8: UV 120 s + microwave 30 s, and E9: UV 180 s + microwave 30 s), (c) ultrasonic + microwave (F1: ultrasonic 10 min + microwave 10 s, F2: ultrasonic 20 min + microwave 10 s, F3: ultrasonic 30 min + microwave 10 s, F4: ultrasonic 10 min + microwave 20 s, F5: ultrasonic 20 min + microwave 20 s, F6: ultrasonic 30 min + microwave 20 s, F7: ultrasonic 10 min + microwave 30 s, F8: ultrasonic 20 min + microwave 30 s, and F9: ultrasonic 30 min + microwave 30 s).
