Characterization of Extreme Acidophile Bacteria (Acidithiobacillus ferrooxidans) Bioleaching Copper from Flexible PCB by ICP-AES

Table 4

Conditions of the experiment.

Experimental conditions	Particle size of flexible PCB; (mm)	Quantity of flexible PCB; (g/L)	Initial pH of culture medium	Bacteria inoculation; (%)	Bacteria activation time; (d)	Quantity of FeSO4·7H2O; (g/L)
1	0.84, 0.42, 0.25	20	2.0	10	4	40
2	0.42	10, 20, 30	2.0	10	4	40
3	0.42	20	1.5, 2.0, 2.5	10	4	40
4	0.42	20	2.0	5, 10	5	40
5	0.42	20	2.0	10	4, 5, 6	40
6	0.42	20	2.0	10	6	10, 20, 30, 40