XRF chemical composition of recovered amorphous silica using procedure A and B. nd: not detected. Others contains: Fe₂O₃, ZnO, CuO, MnO and BaO.

Compositions	Procedure A			Procedure B
	Silica BA	Silica ECO	Silica MCYC	Silica BA	Silica ECO	Silica MCYC
	Results in wt%
SiO2	23.38	14.98	21.70	77.48	80.30	73.11
Na2O	22.99	19.39	16.89	9.29	8.68	9.30
SO3	35.35	39.08	35.17	10.67	9.32	5.78
P2O5	3.68	2.93	4.61	0.09	0.08	0.30
K2O	11.08	20.53	17.65	0.12	0.08	1.05
Cl	0.71	1.43	2.31	0.08	0.04	0.02
CaO	0.59	0.01	0.01	0.09	0.03	0.02
MgO	0.54	0.45	0.40	0.13	nd	nd
Al2O3	0.52	0.11	0.18	0.42	0.20	8.30
Others	0.13	0.06	0.03	0.47	0.15	1.05