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The Breakthrough That Could Unlock Ocean Carbon Removal. “How Equatic solved seawater’s toxic gas problem and delivered a two-for-one solution: removing carbon while producing green hydrogen.”

Discussion  4 comments

Keith Mac

Isn't there already an issue with excess climate driven CO2 dissolved in sea water? I recall it was affecting shell formation in molluscs in some regions and possibly impacting krill abundance in the southern ocean? My understanding of the article is that they've developed a technology that reduces the effective cost of removing CO2 from the atmosphere and dissolving it in the ocean instead. It seems like this might a problematic solution?

Zach Zaletel Edited

Unless I was misreading the article, and I believe the process turns the CO2 into a carbonate which should not lead to further certification.

Zach Zaletel

Further acidification. Good proofreading, me.

Reply in this thread

Paul Pomeroy Edited

I suppose "every little bit helps" could apply here, but just to add a little perspective to this, global energy-related CO2 emissions in 2023 reached a new record high of 37,400,000,000 metric tons. Reaching a "new record high" pretty much happens every year. According to the linked article, Equatic has, to date, only been testing but have plans for a full-scale facility ("The company has already signed an agreement to deliver 2,100 metric tons of hydrogen to Boeing and remove 62,000 metric tons of CO2 from the air on the aerospace giant’s behalf"). You would need 603,224 more such full-scale facilities if you wanted to match our fossil fuel related CO2 emissions. More problematic, Equatic says it needs 2.5MWh to extract 1 metric ton of CO2. You can power about 2,000 average US homes for a day with 2.5 MW of electricity.

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