this post was submitted on 16 Feb 2025
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There are plenty of arguments to be made against direct air capture, but entropy isn't one of them. Nobody ever claimed this is some kind of perpetuum mobile.
This is a joke.
While physically possible DAC is a waste of money and energy compared to effective measures such as constructing solar farms, batteries and power lines. Even hydrolysis may look attractive.
At the latest after decarbonization of the power grid (yes I am laughing as I write this), we will want to remove CO2 from the air which was emitted 50 years ago. Also I would like to point out that the IPCC scenarios about reducing global warming already include carbon capture. Plans to remove CO2 from energy production till 2035 already only work under the premise that we actively start removing CO2 from the atmosphere simultaneously.