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  3. Solar-powered device captures carbon dioxide from air to make sustainable fuel

Solar-powered device captures carbon dioxide from air to make sustainable fuel

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  • N [email protected]

    I have several of these around me.
    I call them trees, and plants.
    They use solar power to convert carbon, water, and minerals, into a solid form, which I call wood.

    X This user is from outside of this forum
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    [email protected]
    wrote on last edited by
    #17

    Ha! Next you'll tell us these magic machines are nearly free and self-replicating!

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    • X [email protected]

      Ha! Next you'll tell us these magic machines are nearly free and self-replicating!

      N This user is from outside of this forum
      N This user is from outside of this forum
      [email protected]
      wrote on last edited by
      #18

      lol. They are. It's truly amazing!

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      • A [email protected]

        The problem is trees are such a blight on the landscape. Nobody wants trees popping up all over the place. Not in my backyard!

        Imagine the dystopian future when huge areas of land are set aside and blanketed with trees in such density that you can't even see through them.

        G This user is from outside of this forum
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        [email protected]
        wrote on last edited by
        #19

        My ex, visiting Canada from Japan, once complained that there are too many trees.

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        • L [email protected]
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          [email protected]
          wrote on last edited by
          #20

          “Sustainable fuel”

          Put that shit deep under ground, not back in the air!!

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          • L [email protected]
            This post did not contain any content.
            gandalf_der_12te@discuss.tchncs.deG This user is from outside of this forum
            gandalf_der_12te@discuss.tchncs.deG This user is from outside of this forum
            [email protected]
            wrote on last edited by
            #21

            Interesting. I wonder how they catch the CO2 out of the air.

            Ok, after reading (parts of) the paper:

            • they use some amines on porous Silicate to catch the CO2 out of the air
            • the whole process in the paper is actually a 2-step process, the first step being CO2 capture
            • the second step describes how to convert CO2 into CO+H2 or sth
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            • M [email protected]

              Cool.

              Looking forward to hearing about the scaling up.

              gandalf_der_12te@discuss.tchncs.deG This user is from outside of this forum
              gandalf_der_12te@discuss.tchncs.deG This user is from outside of this forum
              [email protected]
              wrote on last edited by
              #22

              i find the technology itself more interesting than the scaling-up, because we can't do anything about the scaling up (at least i don't have billions of dollars that it would cost), but we can analyze the process qualitatively from home, that's more exciting.

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              • I [email protected]

                https://en.wikipedia.org/wiki/Acetogen is a more promising technology in my opinion. It also does not require high pressures or temperatures, has been proven to scale to tons of co2, and uses much less energy than this paper.

                This paper has the advantage of not needing a high concentration of co2 in the air. But on the other hand, such sources are readily available as a by-product of industry.

                gandalf_der_12te@discuss.tchncs.deG This user is from outside of this forum
                gandalf_der_12te@discuss.tchncs.deG This user is from outside of this forum
                [email protected]
                wrote on last edited by
                #23

                i think acetogens are biological entities, though?

                wasn't there some rule about industrial processes being 10x to 100x more efficient than biological beings, in general?

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                • gandalf_der_12te@discuss.tchncs.deG [email protected]

                  i think acetogens are biological entities, though?

                  wasn't there some rule about industrial processes being 10x to 100x more efficient than biological beings, in general?

                  I This user is from outside of this forum
                  I This user is from outside of this forum
                  [email protected]
                  wrote on last edited by
                  #24

                  there's no such rule

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                  • P [email protected]

                    “Sustainable fuel”

                    Put that shit deep under ground, not back in the air!!

                    E This user is from outside of this forum
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                    [email protected]
                    wrote on last edited by
                    #25

                    Lol, how is this different then hydrogen for example? Its renewable if just carbon dioxide is consumed during generation

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                    • E [email protected]

                      Lol, how is this different then hydrogen for example? Its renewable if just carbon dioxide is consumed during generation

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                      [email protected]
                      wrote on last edited by
                      #26

                      Hydrogen fuel isn’t really renewable, even if the PR agents of companies creating it tell so.
                      Edit: at fact check, I found this, maybe there is a way after a

                      https://youtu.be/ISuUlc8widc

                      To your comparison: Hydrogen only releases water if burned.

                      And getting CO2 out of air is very resource intensive and we need to pull a lot CO2 out, if the air to get back to “normal” levels. We can not afford to put any CO2 back into the atmosphere, after the hard work getting it out.

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                      • P [email protected]

                        Hydrogen fuel isn’t really renewable, even if the PR agents of companies creating it tell so.
                        Edit: at fact check, I found this, maybe there is a way after a

                        https://youtu.be/ISuUlc8widc

                        To your comparison: Hydrogen only releases water if burned.

                        And getting CO2 out of air is very resource intensive and we need to pull a lot CO2 out, if the air to get back to “normal” levels. We can not afford to put any CO2 back into the atmosphere, after the hard work getting it out.

                        E This user is from outside of this forum
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                        [email protected]
                        wrote on last edited by
                        #27

                        Hydrogen only releases water when burned? Hydrogen is always used with oxygen to create water and power? Its a chemical fact. It is renewable, the power generation around that to create the hydrogen also needs to be renewable ofcourse like solar or wind. But the creation and use of hydrogen is a perfect chemical cyclus

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