Some rocks absorb CO2 as they weather. Also, rocks provide minerals to fields which provide extra benefit.
Greenland with melted glaciers aren’t the only option. Olivine is rock that absorbs CO2 in seawater. We could grind and dump gigatons of it, and it is more accessible.
Every calculation I've seen regarding olivine comes out saying that the grinding and transport will release more carbon than the olivine will absorb, even accounting for technology improvements and green energy.
Comments
Some rocks absorb CO2 as they weather. Also, rocks provide minerals to fields which provide extra benefit.
Greenland with melted glaciers aren’t the only option. Olivine is rock that absorbs CO2 in seawater. We could grind and dump gigatons of it, and it is more accessible.
Every calculation I've seen regarding olivine comes out saying that the grinding and transport will release more carbon than the olivine will absorb, even accounting for technology improvements and green energy.
Yes, like GP said the harvesting and shipping of huge amounts of rock seems iffy on actual sequestering any carbon net.
What happens if we mandate that all concrete be made of these rocks?