Obviously, you didn't read how it is intended to work. Baking the rock gives them a stream of nearly pure CO2, which can be sequestered underground. The powdered rock then efficiently captures CO2 from the air (where it is of course, very low in concentration). That CO2 can then be baked off, sequestered, and the rock cycled to the air again. In an industrial plant, you'd have a continuous process of rock being baked, exposed, baked again, with a continous stream CO2 being sequestered geologically.
aydyn|2 years ago
ttyprintk|2 years ago
Oil fields often have dissolved CO2 and methane contaminants. Those gasses are captured and pressurized to force more oil out. Those empty caverns are the largest opportunity for capture.
At ocean depth, CO2 is trapped under hydrate caps. This is best-known around geothermal “smokers”, but the ocean floor is largely unknown. So, there is significant risk allowing the hydrate caps to melt.
adammarples|2 years ago