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> Is it possible that we one day find a way to "dig it up from the air That makes zero sense — thermodynamics prefer lower energy states. Coal burns on its own
by kaba0 3y ago
> Is it possible that we one day find a way to "dig it up from the air
That makes zero sense — thermodynamics prefer lower energy states. Coal burns on its own, so that’s the direction of the reaction. It doesn’t become coal on its own, so you have to put energy into that and you net lose on that.
- badtension 3y agoThat's why the most effective "carbon capture" we can possibly make - is not emitting it in the first place. It's really that simple... I'm not saying we shouldn't invest money and time in carbon DAC, it will become important later after we stopped emitting tons and tons of CO2 every day.
- sn9 3y agoYou're almost there. How do trees get the energy to sequester carbon? From the sun. So you use solar and other renewables to power carbon sequestration. Startups like Terraform are taking things further by converting that into fuels we already know how to use, which will displace fossil fuels: https://caseyhandmer.wordpress.com/2023/01/09/terraform-industries-whitepaper-2-0/ https://caseyhandmer.wordpress.com/2023/01/09/terraform-indu...
- kaba0 3y agoWhile they are at it, won’t you start cycling to power your country? It would have similar efficiency..
- sn9 3y agoDoesn't scale the same.
- ericjmorey 3y ago"At the fundamental level, Terraform’s machines capture carbon dioxide (CO2), generate hydrogen (H2), and react them to form carbon-neutral natural gas (CH4). Our CO2 concentrators can also capture enough water from the air to supply our process with plenty left over. " They seem to very deliberately not use the name methane in their presentation. CH4 is methane.