Bringing the gap from fossil fuels to SAF

Expert perspectives on Sustainable Aviation Fuel

Aircrafts flying around the world will be fueled at different airports in different countries which means that international fuel specifications for sustainable aviation fuels (SAF) is a necessity.

It’s a matter of ensuring flight safety and minimizing risk of mishandling, but it is also necessary to avoid the need for implementing a varied mix of fuel delivering systems at high cost. Finally, the specifications ensure that today’s engines or aircrafts does not have to be redesigned to run on SAF.

The standard regulating the technical certification of SAF is ASTM D7566 that specifies which technologies and methods can be used when producing on spec SAF. Once produced the SAF can then be blended up to a maximum certified blending limit and be certified to ASTM D1655 which is regarded as conventional Jet A or Jet A1 kerosene.

Several routes lead to SAF certification

At present, the focus is on SAF as a drop-in replacement to conventional jet fuel. ASTM standards do not allow SAF to be used neat today and use is mostly limited to a 50% blend, with a maximum of 10% in some cases.

There are currently seven approved technology pathways to produce drop-in SAF with the following blending limits:

Co-processing is another option for decarbonizing and meeting the criteria for the Standard Specification for Aviation Turbine Fuels (D1655). Co-processing involves the simultaneous processing of fossil and renewable feedstocks. It allows you to convert renewable feedstocks into drop-in, ultra-low sulfur bio jet fuel at economically competitive prices as you can use existing refining, transport, and storage facilities.

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Knowledge Special: SAF TALKSTM

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Sustainable Aviation Fuel (SAF) continues to be recognized as a crucial solution for driving down the CO2 emissions of the aviation industry. And yet, SAF currently accounts for less than 1% of the global jet fuel consumption.

To fuel knowledge sharing of what it'll take to scale-up SAF, we've composed a second season of SAF Talks^TM filmed during our second SAF Summit in Copenhagen in November 2023.

In a total of 9 bite-sized videos, frontrunners from across the SAF value chain share their latest trends and insights. And trust us! The industry is far from being at a standstill with numerous development underway...

Watch SAF Talks

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Brochure - Sustainable Aviation Fuel. Minimize emissions. Maximize opportunities.

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