Elemental analysis of biomass, biochar, AB, and HB^a.

Name	C (%)	H (%)	N (%)	S (%)	Ash (%)
AB	84.70 ± 0.5	2.80 ± 0.10	0.30 ± 0.01	0.03 ± 0.02	3.9 ± 0.3
HB	81.9 ± 0.4	2.40 ± 0.01	0.30 ± 0.01	ND	7.6 ± 0.3
Biochar	84.0 ± 1.0	3.70 ± 0.04	0.12 ± 0.00	ND	4.8 ± 0.6
Biomass	50.1 ± 0.4	7.80 ± 0.05	0.02 ± 0.01	ND	0.4 ± 0.3
AC	90.1 ± 0.3	1.60 ± 0.10	0.30 ± 0.10	0.01 ± 0.00	4.1 ± 0.4

^aND = not detectable.