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Cake day: June 11th, 2023

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  • You’re right about biofuel… Except that biofuel is already refined biomass. The water is already removed, usually to become as close to pure hydrocarbons as possible.

    Hydrocarbons.

    Chains of hydrogen and carbon.

    Your comment demonstrates you’re not fully understanding the chemistry of the combustion. If you remove the “water” I am talking about, you wouldn’t have a hydrocarbon. You would have only carbon.

    The “water” I am talking about is the “hydro” part of the “hydrocarbon”. That “hydro” does not become CO2 when it burns. That “hydro” becomes H2O.

    When burning lighter hydrocarbons, the majority of the exhaust in the stack is actually water vapor rather than CO2. Putting that hydrogen into the ground, unburnt, provides no additional benefit over putting just the CO2 into the ground. It merely fills up the reservoir faster, and requires even more energy for the same amount of carbon sequestration. Burning that biomass, it is (theoretically) possible for the energy recovered (after powering sequestration operations) to be a net positive.

    Sequestering the unburned biofuel without recovering that energy, the operation must be a net negative.


  • If you’re pulling CO2 out of the air, why in the world would you turn around and burn it???

    Because the CO2 we pull out of the air is not in a form that we can feasibly sequester. It’s padded with excessive hydrogen and oxygen into carbohydrate chains. When we burn that vegetation, we convert it to primarily to H2O, along with some CO2. Targeting the CO2 alone, we can sequester a lot more for the same energy and same volume.

    The structure of the rock is destroyed by the process, it’ll just leak out.

    That rock sequestered hydrocarbons from the biosphere for millions of years. It’s not destroyed by the process. We use comparable methods for the strategic petroleum reserve and the national helium reserve.

    This whole scheme is a fever dream designed to continue burning fossil fuels

    That may be true. And yet, when used with non-fossil fuel sources, it does, indeed, serve to remove CO2 from the atmosphere, rather than simply reducing the emission of CO2.


  • Ok… Come on now, I know you’ve been propagandized, and propaganda works, but let’s think this through

    Please read what I wrote, not what you think I said.

    If you capture CO2 out of smokestacks, what have you done?

    It depends on where that carbon came from. If it came from petroleum or coal feedstocks, you’ve slightly reduced emissions. But, the carbon from biofuels originated from the atmosphere. Vegetation captured that CO2 directly from the atmosphere, and incorporated it into the biomass. Burning it converted the biomass into concentrated CO2 and H2O; we’re capturing the concentrated CO2 out of that stream.

    Again: this does not replace the need to suspend fossil fuels. But the specific process I described does, indeed, extract CO2 from the biosphere.

    If we plow the vegetation under, we are burying the hydrogen and excess oxygen as well as the carbon. Burning it, we release the hydrogen (as water), but still bury the carbon.


  • And all of the aside, this doesn’t math even if it worked. It takes too much energy to pull CO2 out of the air

    They aren’t taking it out of the air. They are taking it out of smoke stacks. It’s far easier to pull it out of highly concentrated sources like smoke stacks than to try to pull it directly out of the atmosphere.

    we’d have to put up CO2 condensers on a percentage of earths surface…

    You’re describing biofuels. Vegetation “condenses” the CO2 out of the atmosphere, incorporating it into carbohydrates.

    Burning biofuels, we produce H2O and CO2 in the smoke stacks. Every pound of CO2 pulled from the smoke stack is a pound removed from the atmosphere.

    Any introduction of fossil fuels into the process defeats the purpose, but the underlying technology is theoretically feasible with biofuel carbon sources.