Study: SAF Reduces Aircraft Contrails, Soot Particle Emissions

When compared to jet-A-1 fuel, SAF significantly reduces the climate-warming effect of condensation trails, according to the findings.

Meg Godlewski

Friday, June 07, 2024 at 11:20 AM ET

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Edited By: tccjeremy

A350 flight test aircraft followed by DLR chase plane during ECLIF3 flight campaign. [Courtesy: Airbus]

Key Takeaways:

A new study indicates that using 100% Sustainable Aviation Fuel (SAF) can significantly reduce both aircraft carbon footprints and the climate-warming impact of contrails.
The ECLIF3 study found that pure SAF reduced contrail ice crystal formation by 56% compared to conventional jet fuel during test flights.
This reduction is attributed to SAFs having fewer aromatic compounds, leading to less soot in emissions and, consequently, fewer ice crystals in contrails.

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The use of 100 percent sustainable aviation fuel (SAF) in commercial airliners may reduce the impact of contrails in addition to reducing the aircraft’s carbon footprint, according to a new study.

The “Emission and Climate Impact of Alternative Fuels,” or ECLIF3 study, was conducted through a collaboration with Airbus, Rolls-Royce, the German Aerospace Center (DLR), and SAF producer Neste.