Table 2.

Mg, Fe, Ca, and Si extraction in the experiments based on concentrations in solution.

Experiment	Mg, %	Fe, %	Ca, %	Si, %
1 M sulfuric acid beakers	92 ± 2.8	82.60 ± 6.9	28.53 ± 3.1	0.17 ± 0.06
Bioreactors	95 ± 3.9	60.29 ± 2.9	26.42 ± 1.4	0.5 ± 0.07
1 M sulfuric acid percolators	73 ± 2.9	52 ± 4.7	10.57 ± 1.9	0.23 ± 0.4
Bioleaching percolators	16 ± 1.4	8.8 ± 1.1	5.28 ± 0.9	0.09 ± 0.01