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View Diary: Sea Urchin offers path to Cheap Carbon Sequestration (118 comments)

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  •  The problem with this approach (12+ / 0-)

    is that it will require an enormous amount of Calcium, if it's sourced in the form of CaO that takes a lot of energy to produce from limestone (CaCO3) which produces an equal amount of CO2 as gets absorbed. How will the Calcium be sourced?

    I think I know of 2-3 much better ideas than this that we will be discussing in future radio programs of SciTech with Yuri and Rick.

    Listen to Netroots Radio or to our pods on Stitcher. "We are but temporary visitors on this planet. The microbes own this place" <- Me

    by yuriwho on Tue Feb 05, 2013 at 06:42:00 PM PST

    •  The same also applies to the nickel catalyst. (5+ / 0-)
      Recommended by:
      yuriwho, Odysseus, JesseCW, Fishgrease, MGross

      Nickel nanoparticles would, of necessity, be produced from pure nickel (probably involving the Mond process to obtain it) which would be both expensive and would drive the world demand for the metal through the roof. Even given the idea that the nickel could be reused in the sequestration process, it would still require massive amounts of a metal that we already use extensively. Nickel mining isn't exactly carbon-neutral either, nor is it without other environmental impacts.

      This process might be useful, but let's not jump to the conclusion that it's the next big thing until we know all the ramifications and impacts involved.

      Strategy without tactics is the slowest route to victory, tactics without strategy is the noise before defeat. Sun Tzu The Art of War

      by Stwriley on Wed Feb 06, 2013 at 05:11:06 AM PST

      [ Parent ]

      •  Lotta Ni in asteroids... (1+ / 0-)
        Recommended by:
        Stwriley

        Another reason to start mining in space maybe?

        •  It's a fine thing in itself, but... (0+ / 0-)

          getting that nickel (or anything else) back down the gravity well in usable form is another matter entirely. But then again, so is getting what we'd need to do mining in space up the gravity well in the first place. Until we build a beanstalk or an electromagnetic launch system (both a very long time off), I don't see it happening.

          Strategy without tactics is the slowest route to victory, tactics without strategy is the noise before defeat. Sun Tzu The Art of War

          by Stwriley on Wed Feb 06, 2013 at 09:48:33 AM PST

          [ Parent ]

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