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Table 1 WTWa GHG emissions of STJs and ATJs from previous studies (numbers in the parenthesis indicates estimated ranges)

From: Well-to-wake analysis of ethanol-to-jet and sugar-to-jet pathways

References Feedstock Co-products Co-product handling methods WTWa GHG emissions (g CO2e/MJ) Note
Cox et al. [25] Sugarcane Sugar, electricity, steam Displacement 80 Including indirect impact from increased sorghum production
Market value allocation 22
Moreira et al. [26] Sugarcane Electricity, yeaste Displacement 8.5 With LUC emissionsa (12 g CO2e/MJ)
Staples et al. [27] Sugarcane Electricity Displacement −4.9 (−27 to 2.1) Without LUCb
    Market value allocation 12.7 (6.8 to 19.7)  
  Corn Distiller dry grains with solubles Displacement 65.6 (50.1 to 117.4) Without LUCc
    Market value allocation 62.6 (47.6–117.5)  
  Switchgrass Electricity Displacement 37.4 (11.7 to 89.8) Without LUCd
    Market value allocation 37.4 (17.3 to 89.8)  
Budsberg et al. [28] Poplar Electricity Displacement 60 to 66 Without LUC; H2 from NG SMR
    Displacement 32 to 73 Without LUC; H2 from biomass gasification
  1. aLUC GHG was estimated at 12 g CO2e/MJ
  2. bLUC GHG was estimated at 20–47 g CO2e/MJ
  3. cLUC GHG was estimated at 38–101 g CO2e/MJ
  4. dLUC GHG was estimated at 1–12 g CO2e/MJ
  5. eThe jet production process used in Moreira et al. [26] recovers and export yeast as a co-product