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14 comments

  • I like it, it's a good idea. Im still confused as to what form the carbon takes once extracted. Is it just a solid block?

    • It's gasuous CO2. The process pulls in water, acidifies it to release carbon as CO2 to air in a sealed space, pumps that water to the next phase which adjusts the pH back up to normal, then the carbon poor water is pumped back into the ocean.

      Meanwhile, the CO2 in the previously mentioned sealed space is concentrated up to about 98%, but it's still a gas. While this may or may not be a more efficient extraction system, it still has the same issue all extraction systems face: what to do with the extracted gas.

      Here's their proposal with the details.

      • Also, wow:

        Once the seawater is back in equilibrium with the atmosphere, a process that should take less than one year (Zeebe and Wolf-Gladrow, 2008), it is chemically indistinguishable from the seawater that came in.

        I thought this was a reasonably quick process, but a year? How do you buffer a years supply of sea water? You either need a massive massive plant, or this does not take in that much

    • Yeah I think so.

      I wonder how they'd scale something like this up though if it's a success?

14 comments