Effects of Screen Size on Biochemical Conversion of Big Bluestem Biomass for Biofuel Production

Table 2

Energy consumption in biomass size reduction using Retsch SM2000 knife mill.

Biomass material	Moisture content (% dry weight basis)	Screen size (mm)	Energy consumption (Wh/g)	Reference
Big bluestem (whole stems)	5	1	0.13	This study
		2	0.12
		4	0.09
		8	0.07
Miscanthus (segments)	7–10	1	0.28	[20, 21]
		2	0.10
		4	0.06
		8	0.04
Switchgrass (segments)	7–10	1	0.27	[20, 21]
		2	0.12
		4	0.06
		8	0.03
Wheat straw (whole stems)	12	1	0.16	[26]
		2	0.12
		8	0.06
Sorghum stalk (whole stems)	9	1.5	0.09	[27]
		8	0.04
Kochia (whole stems)	10	1.5	0.07	[27]