Which requires digging. Which requires machinery at an industrial scale. Which requires large amounts of energy. Which makes it really hard for this to not be in the perpetual motion set of solutions.
You’d have to be extracting more carbon than your diggers consume (since even today I don’t think this has electrified and capable of running on solar). Your diggers are consuming concentrated carbon compressed from plant and animal biomass under high pressure and energy over millions of years. It seems highly unlikely just growing and burying biomass is sufficient. Additionally, I’m pretty sure the CO2 is just going to leak out in large quantities since, unlike the naturally sequestered CO2 we extract from the ground, you have bacteria that can break down the biomass and let the CO2 escape as a gas. Which means we have serious additional efficiency losses.
The only solution that could work for sequestration as far as I can tell seems like an industrial process powered by nuclear because it breaks the energy cycle completely to accomplish the task. Solar is popular but I’m skeptical that renewables are up to the task that’s required to undo several hundred years of fossil fuels being the engine of the world’s industrial progress.
You’d have to be extracting more carbon than your diggers consume (since even today I don’t think this has electrified and capable of running on solar). Your diggers are consuming concentrated carbon compressed from plant and animal biomass under high pressure and energy over millions of years. It seems highly unlikely just growing and burying biomass is sufficient. Additionally, I’m pretty sure the CO2 is just going to leak out in large quantities since, unlike the naturally sequestered CO2 we extract from the ground, you have bacteria that can break down the biomass and let the CO2 escape as a gas. Which means we have serious additional efficiency losses.
The only solution that could work for sequestration as far as I can tell seems like an industrial process powered by nuclear because it breaks the energy cycle completely to accomplish the task. Solar is popular but I’m skeptical that renewables are up to the task that’s required to undo several hundred years of fossil fuels being the engine of the world’s industrial progress.