Sugarcane bagasse ash before and after acid leaching with HCl, from Norsuraya et al.³³.

Compound	Raw sample (wt%)	After acid treatment sample (wt%)
SiO2	53.10	88.13
SO3	11.20	4.69
MgO	20.72	3.04
P2O5	7.36	1.15
Fe2O3	0.78	0.94
MnO	1.45	0.62
CaO	3.77	0.57
K2O	1.26	0.50
Other	0.36	0.32