UK firm develops jet fuel made from human poo
interestingengineering.com
Environmentalists have opposed using crops for jet fuel but there will be no opposition to using a waste that nobody wants.

UK firm develops jet fuel made from human poo | The starting material is generated in excess and available in plenty. It is a win-win for everyone that the waste is repurposed.::undefined

  • Numberone@startrek.websiteEnglish
    2·
    6 months ago

    Also, if its in human poo it’s already in the carbon cycle and so really less of an issue. The problem is bringing up carbon that’s been removed from the cycle (subterranean oil or gas pockets) and putting that back into circulation. Granted it would be better to pull carbon out of the atmosphere (somehow), but at least using poo wouldn’t be adding NEW carbon. That’s my understanding anyway.

    • Exocrinous@lemm.eeEnglish
      22·
      6 months ago

      Carbon can exist in the atmosphere as carbon dioxide (CO2), methane, (CH4), or as a lot of bigger organic molecules like ethane. Over years, methane you release will eventually decay into CO2. But until that happens, the methane has 20 times the greenhouse effect that CO2 does. So processes like this can take CO2 from the air and turn it into methane, which is bad.

      We need less flying, but if we’re going to have flying, it should use technologies like this which have 1/10th the lifecycle emissions of fossil jet fuel.