Re: Climate Remediation Engineering - CO2 Removal Approaches

On 6/05/2025 3:04 am, Joe Gwinn wrote:

There have been many approaches to CO2 removal proposed over the
years, but very few attempt to estimate the dollar cost per ton of CO2
removed have been published.

 Just the fact that people are still burning coal for energy as a business (at about 30% thermodynamic efficiency) is enough to tell you that doing the exact opposite process is not going to be thermodynamically and economically justifiable at the same time. Otherwise we would put the two processes in the same box and have a perpetual motion machine (and free money machine)!
 If we value having the carbon in solid form rather than as gaseus CO2, then before paying to convert the CO2 gas to coal, the first thing we should do is to stop converting coal to CO2 gas. The second thing would be to pay other people to also stop. It would be far cheaper than CO2 capture. The present purpose of CO2 capture is as a hand-waving excuse for politicians to build new coal power stations and approve new coal mines.