Table 4 Natural gas steam reforming-based bio-jet processes—major process inputs and outputs referenced to 1 MJ of NGSR and NGSR-HF bio-jet fuels
From: Hydrocarbon bio-jet fuel from bioconversion of poplar biomass: life cycle assessment
NGSR bio-jet | NGSR-HF bio-jet | Unit | |
|---|---|---|---|
Input | |||
Feedstock (bone dry) | 81.4 | 81.4 | g |
Enzymes | 0.683 | 0.683 | g |
Sulfuric acid | 1.46 | 1.46 | g |
Lime | 2.43 | 2.43 | g |
Calcium carbonate | 0.391 | 0.391 | g |
Carbon dioxide | 0.172 | 0.172 | g |
Ammonia | 1.03 | 1.03 | g |
Corn steep liquor | 2.18 | 2.18 | g |
Sodium hydroxide | 1.94 | 1.94 | g |
Natural gas—steam reforming | 0.0525 | 0.0525 | MJ |
Natural gas—heat/steam | 0.0937 | 0 | MJ |
Hog fuel—heat/steam | 0 | 8.23 | g |
Output | |||
Bio-jet fuel | 1 | 1 | MJ |
Excess electricity | 0.00254 | 0.00254 | Kwh |
CO2 (biogenic) | 87.5 | 102 | g |
CO2 (nonbiogenic) | 32.6 | 27.9 | g |