this post was submitted on 10 Dec 2023
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There's nothing thermodynamically wrong with burning methane, releasing the water, and putting the CO2 back underground. Sequestration does not require un-oxidizing the carbon.
Though if we're going to bury harmful waste underground, nuclear power reduces the quantity of waste by a factor of a million.
Tick…tick…tick…
I'm not sure what you're trying to convey here. Carbon sequestration is unarguably a way to mitigate climate change, and sequestration of CO~2~ is probably the most reasonable way to do so. It doesn't need to be as a gas, as taking CO~2~ and exposing it to various oxides creates carbonates, which are generally very stable compounds like limestone.
The other commenter simply said carbon could be captured as CO~2~ and sequestered without being reduced, which is absolutely true and frankly makes much more sense from a physics/thermodynamics POV.