From: Well-to-wake analysis of ethanol-to-jet and sugar-to-jet pathways
Parameter (unit) | Corn | Corn stover |
---|---|---|
Corn farming/corn stover collection (per dry ton of corn or corn stover, except as noted) | ||
 Direct energy use (MJ) | 466a | 224b |
 N fertilizer application (kg) | 19.4b | 7.72b |
 P fertilizer application (kg) | 6.70b | 2.20a |
 K fertilizer application (kg) | 6.95b | 13.2a |
 Limestone application (kg) | 52.8a |  |
 N2O conversion rate of N fertilizer (%) | 1.525a |  |
 Water consumption (kL) | 25.4c | 0c |
Parameter (unit)c | Dry mill w/o CO extraction | Dry mill w/CO extraction | Wet mill | Corn stover |
---|---|---|---|---|
Corn/corn stover ethanol production | ||||
 Ethanol yield (L/dry ton of corn or corn stover) | 486b | 471b | 496b | 375a |
 Ethanol plant fossil energy use (MJ/L of ethanol) | 7.49a | 7.36b | 13.2a |  |
 Water consumption (L/L of ethanol) | 2.7c | 2.7c | 3.92c | 5.35c |
 DGS yield (dry kg/L of ethanol) | 0.675a | 0.646b |  |  |
 Corn gluten meal yield (dry kg/L of ethanol) |  |  | 0.147a |  |
 Corn gluten feed yield (dry kg/L of ethanol) |  |  | 0.632a |  |
 CO yield (dry kg/L of ethanol) |  | 0.023b | 0.117a |  |
 Electricity yield (kWh/dry ton of corn stover) |  |  |  | 226a |
 Enzyme use (g/dry kg of corn or corn stover) | 1.04a | 1.04b | 1.04a | 15.5a |
 Yeast use (g/dry kg of corn or corn stover) | 0.36a | 0.36b | 0.36a | 2.49a |
 Corn ethanol shares (%) | 18b | 73b | 9b |  |