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Cake day: June 11th, 2023

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  • Biomass is something different… Do it right and you can just use it as fertilizer. Just grow a bunch of algae and spray it over dry land… It’s that easy. It’ll feed the soil, which locks up a lot of carbon back into the food chain. Stack wood in a desert, who cares. There’s so many better ways to do this

    You fail to comprehend the concept or need for “sequestering”. What you are talking about perpetuates the atmospheric carbon cycle. It does not decrease atmospheric carbon dioxide. The mass biodegrades, re-releasing the carbon. “Sequestration” locks that carbon out of the biosphere. You are not talking about sequestration.

    You keep jumping back and forth between biofuel and biomass.

    Biomass is the raw substance. Biofuel is processed biomass. Processing it into a solid fuel is relatively trivial by little more than compressing it under relatively low pressure. Processing into liquid fuels is far more complicated and energy intensive than CO2 capture after combustion. For sequestration purposes, biomass would not be processed into liquid fuel. Liquid biofuels would only be used for transportation purposes.

    And CO2 is a fucking gas

    Not at the depths and pressures we’re talking about.

    But it does not stay that way! We live in Earth, and most cavities aren’t able to stay pressurized without leaking

    I think you need to revisit that misconception. The cavities we’re talking about certainly are.

    You can bury solid biofuel,

    Not in the volumes necessary for atmospheric carbon capture, no, we cannot. Furthermore, solid biofuels are not stable, certainly not as stable as CO2.


  • Sequestering a fluid is far simpler, safer, and more stable than attempting the same with a solid.

    Your arguments seem to assume that what you’re putting back into the ground is a fluid of some sort, either oil or gas.

    Biomass is not typically handled as a fluid. Biomass is generally a solid. Picture “wood mulch”, or “corn stalks”. While the specific materials will vary, the most common format for these biofuels is as a pelletized commodity: The source material is physically pressed into small lumps and handled like coal, not oil or gas.

    Conveying liquified CO2 through a pipe and into a reservoir is a trivial exercise. Conveying pelletized biomass into a suitable storage facility in quantities necessary to have a practical effect is not feasible.

    What methods are you using to convert pelletized biomass into liquid hydrocarbons, suitable for pumping back into the ground? How is that method superior to pumping compressed CO2 instead?




  • 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.