Methods to Reduce Forest Residue Volume after Timber Harvesting and Produce Black Carbon

Table 3

Carbon and nitrogen content of biochar created using pyrolysis and some low-technology methods.

Feedstock	Product	Process	Carbon	Nitrogen
			Percent
Mixed conifer	Biochar	Fast pyrolysis	86	0.18
Piñon-juniper	Biochar	Metal kiln	76	0.50
Mixed conifer	Ash and char mixed	Slash pile	28	0.22
Mixed conifer	Ash	Air curtain burner	48	0.37
Russian olive	Biochar	Rotary kiln	73	1.69