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ASTM decision brings 100% SAF certification within reach

Published by , Editorial Assistant
Hydrocarbon Engineering,

Swedish Biofuels has announced that the ASTM International Committee has accepted the use of C2 to C5 alcohols as feedstock for the alcohol-to-jet (ATJ) pathway, as well as a new specification for fully formulated aviation fuel with aromatics.

The ASTM International Committee D02 on petroleum products, liquid fuels, and lubricants and Subcommittee D02.J on aviation fuel passed a concurrent ballot in late June 2023, extending ASTM D7566, standard specification for aviation turbine fuel containing synthesised hydrocarbons, by a new Annex 8 submitted by Swedish Biofuels. When published, the revised issue of D7566 will be numbered D7566-23a and will display the specification of alcohol-to-jet synthetic paraffinic kerosene with aromatics (ATJ-SKA) produced by Swedish Biofuels technology and using single C2 to C5 alcohols or a combination of two or more C2 to C5 alcohols as feedstock for the process.

Unlike previously approved pathways, the Swedish Biofuels pathway is not limited to a single feedstock and includes the production of aromatics. With the ability to flexibly vary the amount of aromatics, the fuel produced by Swedish Biofuels is completely indistinguishable from fossil kerosene in its composition and properties.

Even though D7566-23a currently only permits use of the jet fuel produced as a 50% blend with fossil kerosene, it is an important milestone in the sustainability journey and a short reach to 100% certification. Once D7566-23a is published by ASTM, it will be eligible as a standard to be used for fuel production for commercial airlines. It is estimated that these final actions will be completed by ASTM in Q323.

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