Aviation CO2 emissions reductions from the use of alternative jet fuels

TLDR: In this paper, the authors quantified the potential for alternative jet fuel (AJF) to reduce aviation's CO2 emissions by assessing: the availability of AJF feedstock; AJF volumes that could be produced from that feedstock, and the lifecycle emissions of AJFs compared to petroleum-derived jet fuel; and the number of bio-refineries and capital investment required to achieve the calculated emission reductions.

About: This article is published in Energy Policy.The article was published on 2018-03-01 and is currently open access. It has received 132 citations till now. The article focuses on the topics: Jet fuel & Commercial aviation.

Figures

Table 11: Non-aviation oil and non-oil final fossil energy demands in 2050

Figure 4: 2050 feedstock availability results

Figure 6: LUC emissions [gCO2/MJjet] averaged over AJF from all cultivated energy crops, by AJF scenario.

Figure 2: 2050 primary bioenergy and waste results, broken out by feedstock type. Note that microalgae is not included at this step of the analysis.

Table 4: Assumptions for scenario construction for 2050 primary bioenergy and waste

Figure 1: 2050 yield projections for soybean oil. The upper and lower lines for each world region correspond to annual linear growth in crop yields of 1.5% and 0.25% of average 2013 yields, respectively. The projected average yield in each world region is used to scale globally resolved agro-climatically attainable yields from the GAEZ model. If projected yields exceed the agro-climatically attainable yield from GAEZ, the GAEZ value is used as an upper bound on crop yields: this is can be observed in the plateau in soybean oil yields in 2045 under the 1.5% growth case in OECD.