Home / Sustainable Aviation Fuels (SAF)

Sustainable Aviation Fuels (SAF)

2022-06-30 / 2 min

The first commercial flights using Sustainable Aviation Fuel (SAF) took off in 2011. Since then it has grown to become a key element in making air transport more sustainable.

Aircraft today are powered by liquid aviation fuel, made mostly from fossil fuel sources. Yet new fuels have been developed that have the potential to dramatically reduce aviation’s net CO2 emissions. With the global growth in air travel, the aviation industry is finally investing in alternatives to fossil jet fuels. All to further reduce flight emissions without compromising operating efficiency.

One innovation is sustainable aviation fuels, which are jet fuels created from waste products and other sustainable feedstocks. Such have the potential to reduce emissions by 80%. The development of alternative aviation fuels could be the key to sustainable air travel. This, in turn, contributes hugely to the industry’s emissions-reduction strategy.

What are SAFs made from?

SAFs are made using a variety of feedstocks and waste products.

Municipal solid waste: waste that comes from households and businesses. This includes product packaging, grass clippings, furniture, clothing, bottles, food scraps and newspapers.

Cellulosic waste: the excess wood, agricultural, and forestry residues. These residues can be further processed into synthetic fuel.

Used cooking oil: this typically comes from plant or animal fat that has been used for cooking and is no longer usable.

Camelina: an energy crop, with high lipid oil content.

Jatropha: a plant that produces seeds containing inedible lipid oil that can be used to produce fuel.

Halophytes: salt marsh grasses and other saline habitat species that can grow either in salt water.

Algae: these microscopic plants can be grown in polluted or salt water, deserts and other inhospitable places.

Non-biological alternative fuels: these include ‘power-to-liquid’, which typically involves creating jet fuel through a process involving electric energy, water and CO2.

Other, more advanced, technologies are in early stages of development, such as solar jet fuel (or sun-to-liquid), which uses highly concentrated sunlight to break up water and CO2 molecules.

Can sustainable aviation fuels make flying carbon neutral?

Relative to fossil fuels, SAFs result in a reduction in CO2 emissions across the lifecycle. CO2 absorbed by plants during the growth of biomass is roughly equivalent to the amount of carbon dioxide produced when the fuel is burned in a combustion engine, which is simply returned to the atmosphere, meaning SAFs can be classed as carbon neutral over their lifecycle.

But, this doesn’t take into account the emissions released during the production of SAFs, like the equipment needed to grow crops, transport raw goods, refine the fuel and so on.

Today, commercial aircraft finally run on sustainable aviation fuel on a daily basis. If SAFs are mixed with conventional jet fuel, they can be added to existing aircraft without the need for adaptation to the aircraft or engine or the fuel distribution network.

There is a small chance that your next flight will be powered, at least in part, by used cooking oils or agricultural waste.

Share this article:

Recent articles

Strategies to Overcome Aerospace Industry Roadblocks

2024-07-18 / 6 min

The aerospace industry is currently facing a series of unprecedented supply chain disruptions that are affecting production schedules, financial forecasts, and operational strategies. Airbus has just revised its delivery target for 2024, now expecting to deliver around 770 commercial aircraft instead of the previously projected 800. This revision is coupled with a delay in the

Locatory.com and DASI Announce Partnership Agreement to Enhance Aviation Inventory Management

2024-07-08 / 2 min

Locatory.com is pleased to announce the start of its partnership with DASI, a leading provider of aircraft inventory solutions. This collaboration brings together over 30 years of combined experience, aiming to provide enhanced support to airlines, MROs, OEMs, and distributors worldwide. By joining forces, Locatory.com and DASI will combine their expertise to deliver comprehensive solutions

Locatory.com Partners with AOG-247 to Deliver Comprehensive Engine Support Solutions

2024-07-01 / 2 min

Leading aviation marketplace Locatory.com has joined forces with AOG-247, a company specializing in technical support solutions and services for aircraft engines. This strategic partnership aims to provide airlines, lessors, and asset owners with a complete solution for their engine needs. David Bradley, CEO of AOG-247 further emphasizes on the benefits of such collaboration: “We are