[AdamTReineke]

Their white paper covers it, linked from their site.

> CO2 concentration is performed using a closed lime/calcite calcination cycle, operating at ambient temperature and pressure.

https://caseyhandmer.wordpress.com/2022/02/03/terraform-indu...

[outworlder]

Can I borrow one for my Sodastream? :)

[marcosdumay]

You may not like the 850°C operational temperature at home.

But the cold part of the cycle, that actually concentrates the CO2 is fun to do at lab-scale, you just have to buy the CaO (and prepare for it becoming very hot).