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Reference pathways for fossil jet fuels have been added to the model. Two pathways are included, one a typical current aviation fuel with sulphur contents in the range of 500 to 1,000 ppm, and the second an ultra low sulphur with levels below 10 ppm. The low sulphur fuel may be required in the future and it may be a better comparison for the BioJet that typically has low or no sulphur. The focus of the work will be on the upstream emissions.
The processing energy requirements (and thus the GHG emissions) for BioJet processes appear to be slightly more severe than the requirements for HRD processes. Therefore an HRJ (hydrotreated renewable jet) fuel pathway has been added to the model. Similarly to the HRD pathway one pathway is depicted in the model and the user will choose the feedstock to be used.
Camelina as a biodiesel, HRD, and HRJ feedstock has been added to the model. The interest in Camelina as a biofuel feedstock is increasing. There are a number of producers in Canada interested in this feedstock.
A list of other oilseeds that are not in GHGenius that have been discussed as potential biodiesel feedstocks has been prepared. For each of these a short description of the feedstock, its benefits, and drawbacks is provided.
We have investigated the state of knowledge of the emissions from the use of aviation fuels.
We have also added the potential to use BTL fuels in the aviation sector. These fuels were already in the model for road use, so they have been included as a third option in the aviation fuel use output tables in the model.
Tags: Bio Jet - Biodiesel - Camelina - GHGenius 4.01 - HRD - Jet Fuel