Capturing CO2 and then what...burying it deep underground?<p>If you're keeping it above ground, it's just going to biodegrade into carbon again real quick. I don't get why people think this is a thing. The only exception is lumber, because if you keep it dry it can last 100+ years (which is a fairly decent sequestration target given our current timelines).<p>If you're going from capture to release in 5-10 years, I don't see the point.
Has anyone evaluated warmer oceans and proliferation of zooplankton in capturing carbon?<p>High CO2 => global warming => warming of the ocean => proliferation of zooplankton => zooplankton captures carbon and cools down planet<p><a href="https://www.annualreviews.org/doi/10.1146/annurev-marine-010814-015924" rel="nofollow">https://www.annualreviews.org/doi/10.1146/annurev-marine-010...</a>
There’s a type of seaweed you can feed to cows that eliminate their methane emissions, right? Something like 30% of water in the Western US goes to farming cattle feed. If you managed to replace that cattle feed with efficiently grown seaweed, couldn’t you kill two birds with one stone? Three if you replace that farmland with solar farms.
I was just rereading an old but still interesting article about something similar yet totally different, the "Green Wave" ocean farming project.<p><a href="https://medium.com/invironment/an-army-of-ocean-farmers-on-the-frontlines-of-the-blue-green-economic-revolution-d5ae171285a3" rel="nofollow">https://medium.com/invironment/an-army-of-ocean-farmers-on-t...</a><p><a href="https://news.ycombinator.com/item?id=11410650" rel="nofollow">https://news.ycombinator.com/item?id=11410650</a>
> Internet giant Amazon is providing $1.6 million in funding for the development of the world’s first commercial-scale seaweed farm, which will be located between the turbines in an offshore wind farm in the Netherlands.<p>I'll assume that the writer meant to say "... the world’s first commercial-scale seaweed farm located between wind turbines ...", because otherwise it makes no sense. Seeweed has been farmed in East Asia for centuries.
FINALLY!<p>I've been ranting and raving about robotic seaweed and/or phytoplankton farming for bio CSS for years. Fractioning air with hand-waving energy sources can't possibly scale the way life has terraformed Earth.<p>All you have to do then is burn/grind that kelp, and sink it in deep ocean trenches.