Comment on why is fossil fuel still used?

MantisToboggon@lemmy.world ⁨1⁩ ⁨day⁩ ago

• Limonene@lemmy.world ⁨1⁩ ⁨day⁩ ago

  Renewable liquid fuels have the same energy density.

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  • db2@lemmy.world ⁨1⁩ ⁨day⁩ ago

    But a higher cost to produce at volume.

    If you mean corn ethanol it doesn’t have the same kick.

    We should just make everyone use hydrazine and let nature do its thing. 😆

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    • Limonene@lemmy.world ⁨1⁩ ⁨day⁩ ago

      Corn ethanol isn’t really renewable either. It works better if made from sugarcane, but it’s still a big food-vs-fuel problem.

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  • Rhaedas@fedia.io ⁨1⁩ ⁨day⁩ ago

    Than gasoline or diesel? No, they don't. Wikipedia has a large chart on their article for energy density of various sources. Some things are harder to directly compare with each other, but diesel has 38 MJ/L, with jet fuel/kerosene and gasoline at 36/35. Adding ethanol dilutes the energy output some, while pure ethanol is 24. It's still a potent source (but with its own costs and effects that need to be included in the net equation). Chemically petroleum simply has more bonds to break and get energy from.

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    • tate@lemmy.sdf.org ⁨1⁩ ⁨day⁩ ago

      Biodiesel is a renewable liquid fuel.

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      • Rhaedas@fedia.io ⁨1⁩ ⁨day⁩ ago

        Yes, it's on the list too at 33 MJ/L. Lower than conventional, but still higher than ethanol. The usual mix for drop in use with typical diesel engines is 10% bio/90% conventional. It's a good use of recycled material vs. just disposal.

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  • MantisToboggon@lemmy.world ⁨1⁩ ⁨day⁩ ago

    Like what?

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