Thanks for the responses, its interesting stuff and seems like a sensible way of trying to reduce emissions and actually capture carbon from the atmosphere.
It makes me think of research that shows that it would make more sense to try and capture carbon from the ocean rather than the atmosphere, as the concentrations are much higher than in the ocean. If we can do this using the natural process of photosynthesis via kelp farms and bio char it could be a very sustainable process.
"THE ocean is the single biggest carbon storage device on Earth,” said Chengxiang ‘CX’ Xiang, CTO and co-founder of direct ocean capture (DOC) company Captura. About 30% of anthropogenic CO2 emissions are absorbed by the ocean, where it is 150 times more concentrated volumetrically than in the air.
He said one of the challenges of removing CO2 directly from air is the “really, really, really low” concentration, prompting the need to build large machinery to filter a lot of air. “Leveraging the ocean to do CO2 drawdown for us as we remove CO2 from the ocean water is a unique process that is inherently scalable.”
This is the source I got that quote from: https://www.thechemicalengineer.com/features/co2-capture-putting-the-sea-into-ccs/
It goes on to talk about how they are working to create tech to capture the carbon, but utilising natural process to achieve the same outcome would be considerably better, though we may need to employ all reasonable methods to decarbonise as quickly as possible.
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