Clear and in-depth research and analysis on biofuels, sustainable aviation fuels and renewables.
Scientist and Independent Researcher.
Specialist in Biofuels, Bioenergy and Renewable energy.
Expert in biojet fuels (sustainable aviation fuels).
Airbus and Rolls Royce recently announced that they were testing 100% sustainable aviation fuels in flights. These flights will test the impact of 100% SAF on operability and emissions.Current ASTM D7566 certification allows the use of SAF in blends of 50% for most technology pathways, including HEFA, Fischer-Tropsch and alcohol-to-jet.One of the major reasons for only allowing 50% blends is due to the lack of aromatics in the SAF produced through these pathways. A minimum of ~8% aromatics is required in jet fuel, up to a maximum of ~25%, as the elastomer seals in aircraft and engines need...