JohnRawls wrote:There are many technologies which can do it but overall it needs scale and it doesn't produce profit while being expensive. We can also make diamonds out of CO2 and so on. Long story short all of them don't look very economically viable solutions.
I think you forgot that corps need (or will need) to off-set their oil burning.
Dumping iron ions into the ocean is cheap and can absorb more CO2 than planting trees on non-farm land. And we can't convert farms to forests if we want to feed 8 B people.
. . . For example, you could put a system into a cargo container and put on a ship that is crossing the ocean anyway. Then use a small hose to just slowly pump the water and iron ions into the sea as the ship moves. I've not done any calculation, but if you need a lot of such containers, they can be built. The cost of dumping their contents is very small.
Oh my God. Did you compare this plan to making CO2 into diamonds as a real comparison?
This plan has been tried and it did work, maybe too good. People ae just afraid of the unintended consequences. Why the fuck are people more afraid of acting than of not acting? If we don't act
90% of us will die by 2100 and maybe 101% of us in 200 years.