OK, if metal global abundance is the issue how about Fe-CO2 fuel cells?: http://www.sciencedirect.com/science/article/pii/S0196890403003078<https://web.anl.gov/PCS/acsfuel/preprint%20archive/Files/49_1_Anaheim_03-04_0856.pdf> Competition for other Fe uses probably make this mute plus such fuel cells have not been demonstrated. Or if you have some spare, non-fossil electricity laying around you can always make lots of environmentally-beneficial metal (Mg or Ca) (bi)carbonates from globally abundant base minerals and air CO2, while generating C-negative H2: http://www.pnas.org/content/110/25/10095.abstract OK, I’m not making elemental C or conc CO2, but I don’t think we need to. Greg
From: geoengineering <geoengineering@googlegroups.com<mailto:geoengineering@googlegroups.com>> on behalf of Russell Seitz / Bright Water <russellse...@gmail.com<mailto:russellse...@gmail.com>> Reply-To: "russellse...@gmail.com<mailto:russellse...@gmail.com>" <russellse...@gmail.com<mailto:russellse...@gmail.com>> Date: Monday, August 14, 2017 at 9:38 AM To: geoengineering <geoengineering@googlegroups.com<mailto:geoengineering@googlegroups.com>> Subject: [geo] Re: Lithium-CO2 tech and CO2 extraction I'm puzzled that this should be produced without dimensional analysis : Globlal annual CO2 production from fossil fuel exceeeds 20 kilomoles per capita. Global lithium production last year amounted to less than 1 mole per capita Global lithium reserves are on the order of 1 kilomole per capita. The question will remain theoretical until a lithium produced from sea water hits the market at close to currrent prices, On Wednesday, August 9, 2017 at 5:57:38 PM UTC-4, E Durbrow wrote: If I understand this correctly, researchers have developed a way to take a stream of pure CO2 and extract oxygen and carbon at very high efficiency. At least according to the summary, ambient stream may be possible and efficient. summary: https://phys.org/news/2017-08-battery-inspired-strategy-carbon-fixation.html P.S. I tried to find the abstract but could not get to it. Perhaps not out yet. -- You received this message because you are subscribed to the Google Groups "geoengineering" group. To unsubscribe from this group and stop receiving emails from it, send an email to geoengineering+unsubscr...@googlegroups.com<mailto:geoengineering+unsubscr...@googlegroups.com>. To post to this group, send email to geoengineering@googlegroups.com<mailto:geoengineering@googlegroups.com>. Visit this group at https://groups.google.com/group/geoengineering. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "geoengineering" group. To unsubscribe from this group and stop receiving emails from it, send an email to geoengineering+unsubscr...@googlegroups.com. To post to this group, send email to geoengineering@googlegroups.com. Visit this group at https://groups.google.com/group/geoengineering. For more options, visit https://groups.google.com/d/optout.