Removal of Hydrogen Sulfide from Biogas Using a Red Rock

Table 3

The composition (wt%) of red rock sample calcined at 1000°C, pH of 10, and 0.32-250 μm.

Compound	Na2O	MgO	Al2O	SiO	P2O5	CaO	TiO2	Fe2O3	MnO
Conc. (%)	1.03	3.97	9.25	33.0	0.55	10.9	3.21	15.81	0.21