Those that can directly replace petrol or diesel in conventional combustion engines have been touted as a sustainable alternative to fossil fuels, with fuels derived from food waste cutting greenhouse gases by up to 94%.
Someone explain to me how burning vegetable oil instead of diesel can have as low as 6% the amount of greenhouse gas emissions. I find it hard to believe breaking a hydrocarbon doesn’t release that much carbon dioxide.
And probably all of the carbon emitted in the production of diesel, from extraction, to transporting, to refining. Vegetable oil - in guessing, I don’t know - is far less polluting.
I didn’t read TFA, but if this can use waste vegetable oil, even if with some processing, there’s even more savings as you can discount much of the production cost as a dual-use savings.
I’ll agree with GP, though, that 6% seems incredibly optimistic.
Someone explain to me how burning vegetable oil instead of diesel can have as low as 6% the amount of greenhouse gas emissions. I find it hard to believe breaking a hydrocarbon doesn’t release that much carbon dioxide.
They get to subtract out all the carbon captured by the growth of the source plants the biofuel was made from.
And probably all of the carbon emitted in the production of diesel, from extraction, to transporting, to refining. Vegetable oil - in guessing, I don’t know - is far less polluting.
I didn’t read TFA, but if this can use waste vegetable oil, even if with some processing, there’s even more savings as you can discount much of the production cost as a dual-use savings.
I’ll agree with GP, though, that 6% seems incredibly optimistic.