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This is an old revision of this page, as edited by Clayoquot (talk | contribs) at 22:38, 20 July 2024 (→Content that might be of use here (or not): Reply). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

Material in rebreather article

The rebreather article contains a lot of text which could perhaps be moved here and linked instead. Rexparry sydney 04:54, 6 August 2007 (UTC)[reply]

Does anyone know if elemental Carbon can be extracted through further processing from exiting CO2 scrubber technology? If so, what level of purity can be achieved? —Preceding unsigned comment added by 216.209.35.163 (talk) 17:02, 21 November 2007 (UTC)[reply]

any level of purity can be achieved, but it's a highly inefficient and energy intensive process (since you're adding all the energy you got from burning it, back in... and no process is 100% efficiënt, so you'd be better off storing the co2 and buying coal... or you can sell the pure, compressed co2 for carbonating drinks or freezing it and selling dry ice (as a fire extinguisher or as a block) Tab active pro (talk) 20:34, 16 September 2022 (UTC)[reply]

Expansion

The algae based scrubbers are not explained. Several other sections need expansion too. B. Srinivasa Sasidhar 10:06, 3 October 2012 (UTC) — Preceding unsigned comment added by Bssasidhar (talk • contribs)

Neither is AgO (silver oxide). All metal oxides form their carbonate in >25% humidity (but if I look up Fe2CO3, I actually get Fe2(CO3)(OH)2 instead). Then it is heated to release the CO2. It is used on the international space station. src:http://www.saltlakemetals.com/Silver_Oxide.htm Charlieb000 (talk) 08:56, 3 July 2013 (UTC)[reply]

if memory serves, the oh2 version you found ks
if memory serves, the oh2 version you found is the version you get from mixing a (this) salt with water
(fe is iron(metal), the rest are non metals, any molecule made from both metal and non metals is a salt) Tab active pro (talk) 20:29, 16 September 2022 (UTC)[reply]

Bind or Bond??

What is Binding? do you mean to say "bonding"? — Preceding unsigned comment added by 67.52.39.82 (talk) 20:06, 3 November 2013 (UTC)[reply]

Lithium peroxide on Apollo?

I would like to see a cite for the claimed use of lithium peroxide on Apollo. I'm pretty familiar with Apollo technology and I have never seen lithium peroxide mentioned, only lithium hydroxide. LiOH was used in the Command Module, the Lunar Module and in the Portable Life Support System (PLSS). That pretty much covers everything. Karn (talk) 07:43, 15 December 2014 (UTC)[reply]

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Metal-organic Frameworks (MOFs)

I'm planning to start a new section under the "Technologies" headline. The objective is to gather information on how MOFs are used to separate carbon dioxide (how the process work, CO2 adsorption, economic analysis, kinetics of the process, etc).Gustavocaride (talk) 00:51, 21 April 2016 (UTC)[reply]

@Gustavocaride:. We look forward to your edits. A comment and a suggestion:
  • comment: there are NO commercial technologies using MOF's to separate CO2, or anything else for that matter. Maybe one of these years there will be, but presently none have been commercialized. So be cautious with the academics who claim "applications." It is early days.
  • suggestion: please rely on this guideline WP:SECONDARY - use reviews and books for all of your references. Please.--Smokefoot (talk) 02:06, 21 April 2016 (UTC)[reply]

Alternative thermo-chemical process

"An alternative to this thermo-chemical process is an electrical one in which a nominal voltage is applied across the carbonate solution to release the CO2" Is there a source for this? Skyeyu (talk) 04:22, 24 October 2017 (UTC)[reply]

No idea, it sounds plausible, butI have tagged it as citation needed, which you can do whenever there is reasonable doubt. Let us know if you find a source. · · · Peter (Southwood) (talk): 18:17, 24 October 2017 (UTC)[reply]
i translated it from word salad to... i hope comprehensible English, hope that satisfies Tab active pro (talk) 20:22, 16 September 2022 (UTC)[reply]

Please re-write this incomprehensible "sentence".

The following sentence is impossible for me to understand:

"Early incarnations of air capture used electricity as the energy source; hence, were dependent on a carbon-free source."

Apart from being a run-on sentence, I simply cannot get my head around what the carbon-free part has to do with electricity. Electricity is not directly related to carbon in any way that I know of. So what does this "sentence" mean? Very frustrating to try and read something 10 times and get nothing but a headache from it. 98.194.39.86 (talk) 19:46, 6 January 2018 (UTC)[reply]

i hope my change makes it comprehensible...
ps. honestly? i can't understand why schools teach useless subjects, but communication? nah just gotta intuite that stuff. Tab active pro (talk) 20:20, 16 September 2022 (UTC)[reply]

Content that might be of use here (or not)

I'm in the process of removing excessive detail from the Carbon capture and storage article. There are some technical details on scrubbing that could be relevant to Carbon dioxide scrubber but I'm not sure so I'm suggesting them here rather than adding the content myself. If you add any of this to the article, please indicate in the edit summary that it was copied from Carbon capture and storage to comply with licensing requirements:

  • Monoethanolamine (MEA) solutions, the leading amine for capturing CO2 , have a heat capacity between 3–4 J/g K since they are mostly water.[1][2] Higher heat capacities add to the energy penalty in the solvent regeneration step.
  • An alternate method is chemical looping combustion (CLC). Looping uses a metal oxide as a solid oxygen carrier. Metal oxide particles react with a solid, liquid or gaseous fuel in a fluidized bed combustor, producing solid metal particles and a mixture of CO2 and water vapor. The water vapor is condensed, leaving pure CO2 , which can then be sequestered. The solid metal particles are circulated to another fluidized bed where they react with air, producing heat and regenerating metal oxide particles for return to the combustor. A variant of chemical looping is calcium looping, which uses the alternating carbonation and then calcination of a calcium oxide based carrier.[3]
  • Under significant study is also adsorption based carbon capture on highly porous materials such as activated carbons, zeolites, or MOFs. Such a process is divided into physical and chemical adsorption or physisorption and chemisorption respectively. The former mitigates the issue of CO2 regeneration as most of the CO2 can be regenerated by simply decreasing the pressure. Physisorption capacity is principally determined by the porosity of the adsorbate.[4][5]
  • In sorption enhanced water gas shift (SEWGS) technology a pre-combustion carbon capture process, based on solid adsorption, is combined with the water gas shift reaction (WGS) in order to produce a high pressure hydrogen stream.[6] The CO2 stream produced can be stored or used for other industrial processes.[7]

Clayoquot (talk | contribs) 23:54, 19 July 2024 (UTC) @Clayoquot:. These refs seem specialized. I dont think that they merit inclusion into this article. --Smokefoot (talk) 18:54, 20 July 2024 (UTC)[reply]

That makes sense. Thanks for looking into this. Clayoquot (talk | contribs) 22:38, 20 July 2024 (UTC)[reply]
  1. ^ Herm, Zoey R.; Swisher, Joseph A.; Smit, Berend; Krishna, Rajamani; Long, Jeffrey R. (20 April 2011). "Metal−Organic Frameworks as Adsorbents for Hydrogen Purification and Precombustion CO2 Capture" (PDF). Journal of the American Chemical Society. 133 (15): 5664–5667. doi:10.1021/ja111411q. PMID 21438585.
  2. ^ Kulkarni, Ambarish R.; Sholl, David S. (18 June 2012). "Analysis of Equilibrium-Based TSA Processes for Direct Capture of CO2 from Air". Industrial & Engineering Chemistry Research. 51 (25): 8631–8645. doi:10.1021/ie300691c.
  3. ^ "The Global Status of CCS: 2011 - Capture". The Global CCS Institute. Archived from the original on 6 February 2013. Retrieved 26 March 2012.
  4. ^ Blankenship, L. Scott; Mokaya, Robert (2022). "Modulating the porosity of carbons for improved adsorption of hydrogen, carbon dioxide, and methane: a review". Materials Advances. 3 (4): 1905–1930. doi:10.1039/D1MA00911G.
  5. ^ Blankenship, L. Scott; Albeladi, Nawaf; Alkhaldi, Thria; Madkhali, Asma; Mokaya, Robert (2022). "Brute force determination of the optimum pore sizes for CO 2 uptake in turbostratic carbons". Energy Advances. 1 (12): 1009–1020. doi:10.1039/D2YA00149G.
  6. ^ Jansen, Daniel; van Selow, Edward; Cobden, Paul; Manzolini, Giampaolo; Macchi, Ennio; Gazzani, Matteo; Blom, Richard; Heriksen, Partow Pakdel; Beavis, Rich; Wright, Andrew (1 January 2013). "SEWGS Technology is Now Ready for Scale-up!". Energy Procedia. 37: 2265–2273. Bibcode:2013EnPro..37.2265J. doi:10.1016/j.egypro.2013.06.107.
  7. ^ (Eric) van Dijk, H. A. J.; Cobden, Paul D.; Lukashuk, Liliana; de Water, Leon van; Lundqvist, Magnus; Manzolini, Giampaolo; Cormos, Calin-Cristian; van Dijk, Camiel; Mancuso, Luca; Johns, Jeremy; Bellqvist, David (1 October 2018). "STEPWISE Project: Sorption-Enhanced Water-Gas Shift Technology to Reduce Carbon Footprint in the Iron and Steel Industry". Johnson Matthey Technology Review. 62 (4): 395–402. doi:10.1595/205651318X15268923666410. hdl:11311/1079169. S2CID 139928989.
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