UK Startup Develops Low Carbon Jet Fuel Made From Human Waste

Chemists at a lab in Gloucertershire have developed a low carbon jet fuel made entirely from human sewage. James Hygate, Firefly Green Fuels CEO, said: "We wanted to find a really low-value feedstock that was highly abundant. And of course poo is abundant." The BBC reports: Independent tests by international aviation regulators found it was nearly identical to standard fossil jet fuel. Firefly's team worked with Cranfield University to examine the fuel's life cycle carbon impact. It concluded that Firefly's fuel has a 90% lower carbon footprint than standard jet fuel. Mr Hygate, who has been developing low-carbon fuels in Gloucestershire for 20 years, said although the new fuel was chemically just like fossil-based kerosene, it "has no fossil carbon, it's a fossil-free fuel."

"Of course energy would be used (in production), but when looking at the fuel's life cycle, a 90% saving is mind-blowing, so yes, we have to use energy but it is much lower compared to the production of fossil fuels," he added. [...] First, they create what they call "bio-crude." It looks like oil: thick, black, gloopy. Most importantly, it behaves like crude oil chemically. Dr Sergio Lima, who is also research director at Firefly Green Fuels, said: "What we are producing here is a fuel which is net zero." [...] The bio-kerosene is now being tested independently at the DLR Institute of Combustion Technology at the German Aerospace Center, working with Washington State University. Further future testing will also be carried out by the UK SAF (Sustainable Aviation Fuels) clearing House, based at University of Sheffield. First results have confirmed the fuel has near-identical chemical composition to A1 fossil jet fuel. The UK Department of Transport has awarded the team a 2 million pound research grant.

So they can make a test tube of kerosene in the lab. That is a long way from replacing kerosene in the world's airports. Mr Hygate has done his maths. Each human, he calculates, makes enough sewage in a year to produce 4-5 liters of bio jet fuel. To fly a passenger jet from London to New York would need the annual sewage of 10,000 people. And another 10,000 to come back. Put another way, the UK's total sewage supply would meet about 5% of the country's total aviation fuel demand. It may sound small, but he insists: "That's pretty exciting." "There's a 10% sustainable aviation fuel requirement, that's a legal mandate. And we could meet half of that with poo."

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