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.
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