Table 2.
Proximate analysis, elemental analysis and High heating value(HHV) for carbonized hog of soft woods (Top, Middle, and Bottom).

Sample	Proximate analysis (wt.%, dry basis)			Elemental analysis (wt.%, dry basis)					HHV (MJ/kg, dry basis)
	Volatile matter	Ash	Fixed carbon1)	C	H	N	O2)	S
Top	7.4 (1.0)3)	66.6 (7.1)	26.0 (6.4)	16.4 (5.6)	0.7 (0.1)	0.3 (0.1)	82.6 (5.7)	0.0 (0.0)	10.4 (2.4)
Middle	11.0 (1.3)	49.5 (4.4)	39.5 (3.9)	33.6 (7.4)	1.2 (0.1)	0.5 (0.1)	64.6 (7.6)	0.0 (0.0)	14.8 (2.3)
Bottom	15.5 (1.8)	32.2 (4.9)	52.3 (4.6)	58.8 (3.4)	2.0 (0.2)	0.9 (0.1)	38.2 (3.5)	0.0 (0.0)	21.3 (1.3)

Fixed carbon (%)=100-(Volatile matter+Ash) (%)
O (%)=100-(C+H+N+S) (%)
The numbers in parenthesis refer to standard deviations.