3 ms·

If 2.8 billions tonnes isn't enough, can we just spray additional olivine powder over the surface of the ocean? Presumably it would lock up CO2 in the seawater

If 2.8 billions tonnes isn't enough, can we just spray additional olivine powder over the surface of the ocean? Presumably it would lock up CO2 in the seawater just fine, allowing more CO2 to be absorbed by the ocean from the air.

matznerd 3y ago
Need very fine particles for that and its usually classed then as ocean alkalinity enhancement (OAE). A hybrid method has been proposed in the literature, to use beaches and is currently being implemented via a project I started (but which I am no longer with) that has been turned into a company called Vesta -> https://vesta.earth https://vesta.earth Rolling stones; fast weathering of olivine in shallow seas for cost-effective CO2 capture and mitigation of global warming and ocean acidification https://esd.copernicus.org/preprints/2/551/2011/esdd-2-551-2011.pdf https://esd.copernicus.org/preprints/2/551/2011/esdd-2-551-2... https://smartstones.nl/research/publications-2/ https://smartstones.nl/research/publications-2/