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Reservoir on the ocean floor safe way of storing liquefied CO2 for a long time?
- tuatoru 4y agoActual title is "Ocean Sequestration". The piece is about hiding CO2 as liquid on the deep ocean floor. Personally I'm more in favor of removing CO2 the way that it happens naturally: by erosion and weathering. CO2 gets chemically bound into some kinds of rocks. Enhanced weathering involves crushing olivine or similar rocks, and exposing the powder to air for a few weeks in a hot place, and then dumping it in the deep ocean. It's what happens naturally. It'd just be quicker with mechanical assistance.
- gus_massa 4y agoI remember someone proposing this in a shore, so the sea breaks and mix the rocks and it's cheaper. Is this alternative better or it has some hidden problems?
- PaulHoule 4y agoMy fear about weathering is that you can't really measure it. Contrast that to saline aquifer disposal where you can measure the CO2 going into the ground the same way you measure natural gas coming in your house. The thing I can't get is that that public interest in things that are unproven and/or unscalable (like carbfix requiring a few tons of water to dispose of a ton of CO2 or the idea of spreading olvine on the beach where you have no idea if it accomplishes anything) get so much attention but there is little enthusiasm or traction for saline aquifer disposal which the literature says is good to go.
- basicplus2 4y agoUntil it turns the surrounding water highly acidic and kills everything in sight