| This spreadsheet shows the value for the upper
end of the uncertainty range for CO2 equiv emissions associated with the
products displaced by Ethanol coproducts. |
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| 'Ethanol
Today' scenario |
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| Ethanol Today |
Maximum
Emissions |
Max emission |
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| CO2
Calculator |
Baseline |
as
calculated |
with coProd |
/ baseline |
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| Agricultural phase |
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|
uncertainty |
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| Nitrogen fertilizer emissions (kg
CO2e/ha) |
1,638 |
4,498 |
4,498 |
2.746 |
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| Phosphorus (kg CO2e/ha) |
102 |
102 |
102 |
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| Potassium (kg CO2e/ha) |
70 |
70 |
70 |
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| Lime (kg CO2e/ha) |
228 |
571 |
571 |
228 |
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| Herbicide (kg CO2e/ha) |
69 |
69 |
69 |
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| Insecticide (kg CO2e/ha) |
5 |
5 |
5 |
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| Seed (kg CO2e/ha) |
- |
- |
- |
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| Transport emissions (kg CO2e/ha) |
39 |
73 |
73 |
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| Gasoline (kg CO2e/ha) |
114 |
114 |
114 |
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| Diesel (kg CO2e/ha) |
248 |
248 |
248 |
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| Nat Gas (kg CO2e/ha) |
46 |
46 |
46 |
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| LPG (kg CO2e/ha) |
61 |
61 |
61 |
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| Electricity (kg CO2e/ha) |
56 |
56 |
56 |
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| Energy used in irrigation (kg CO2e/ha) |
4 |
4 |
4 |
Max CO2 equiv emiss / Baseline CO2 |
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| Labor transportation (kg CO2e/ha) |
- |
- |
- |
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| Farm machinery (kg CO2e/ha) |
21 |
21 |
21 |
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| CO2 from land use change (kg CO2e/ha) |
- |
- |
- |
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| Total Agricultural phase (kg CO2e/ha) |
2,703 |
5,938 |
5,938 |
2.197 |
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| Biorefinery phase |
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| Transportation of feedstock to biorefinery
(g CO2e/L) |
49 |
49 |
49 |
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| Primary energy (g CO2e/L) |
- |
- |
- |
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| Diesel (g CO2e/L) |
- |
- |
- |
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| Coal (g CO2e/L) |
885 |
885 |
885 |
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| NG (g CO2e/L) |
365 |
365 |
365 |
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| Electricity (g CO2e/L) |
- |
- |
- |
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| Biomass (g CO2e/L) |
- |
- |
- |
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| Capital (plant and equipment) (g
CO2e/L) |
9 |
9 |
9 |
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| Process water (g CO2e/L) |
25 |
25 |
25 |
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| Effluent restoration (BOD energy cost to
PWTPs) (g CO2e/L) |
20 |
20 |
20 |
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| Transportation of chemicals to plant (g
CO2e/L) |
- |
- |
- |
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| Totals |
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Max CO2 equiv emiss / Baseline CO2 |
| Total agricultural phase (g CO2e/L) |
780 |
1,715 |
1,715 |
780 |
| Total biorefinery phase (g CO2e/L) |
1,353 |
1,353 |
1,353 |
1353 |
| Coproduct credits (g CO2e/L) |
(525) |
(525) |
(1,153) |
(628) |
2.1967 |
| Net GHG emissions (g CO2e/L) |
1,608 |
2,543 |
1,914 |
628 |
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| Reported HV of ethanol (MJ/L) |
21.2 |
21.2 |
21.2 |
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| Ethanol distribution (g CO2e per MJ) |
1.4 |
1.4 |
1.4 |
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| g CO2e per MJ |
77 |
121 |
92 |
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| g CO2e per MJ of Conventional Gasoline (CG)
produced, distributed, and combusted. |
94 |
94 |
94 |
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| Ethanol minus CG (g CO2e/MJ EtOH) |
(17) |
27 |
(2) |
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| Percentage change in GHG emiss from Gas |
(0) |
29% |
-2% |
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This value (1,153) reflects the
uncertainty range, upper end, of the estimate of CO2 equiv emissions assoc
with the products displaced by the Ethanol coproducts. |
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