Modification of Silica Rice Husk Ash to Solid Ammonium Sulphate for Second Generation Biofuels Productions

Table 1

The chemical analysis of RHA, RHAPrNH₂, and RHNH₃SO₄H using a combination of elemental and EDX analysis.

Sample	Elemental analysis (%)
	C	H	N	S	Si
RHA	0.42 (6.76)	1.76	—	—	(29.09)
RHAPrNH2 [7]	9.67 (19.52)	2.31	6.08 (6.1)	—	(23.48)
RHNH3SO4H	10.07 (20.79)	2.99	2.20 (3.43)	— (3.52)	(23.45)