EXTRACTION OF CARBON DIOXIDE FROM THE ATMOSPHERE THROUGH ENGINEERED CHEMICAL SINKAGE

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We present the case for CO{sub 2} extraction from air as a means of sustaining fossil energy use by avoiding climate change. Our concept harnesses atmospheric circulation to transport CO{sub 2} to sites where the CO{sub 2} is extracted by binding it to an adsorbent. As a proof of concept, we show that an aqueous Ca(OH){sub 2} solution efficiently converts CO{sub 2} to a CaCO{sub 3} solid that can be heated to obtain pure CO{sub 2} and recover the CaO. Even with recycling costs, CO{sub 2} extraction from air blown by wind through a 1 m{sup 2} aperture could eliminate ... continued below

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DUBEY, M. K.; ZIOCK, H. & AL, ET November 1, 2001.

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We present the case for CO{sub 2} extraction from air as a means of sustaining fossil energy use by avoiding climate change. Our concept harnesses atmospheric circulation to transport CO{sub 2} to sites where the CO{sub 2} is extracted by binding it to an adsorbent. As a proof of concept, we show that an aqueous Ca(OH){sub 2} solution efficiently converts CO{sub 2} to a CaCO{sub 3} solid that can be heated to obtain pure CO{sub 2} and recover the CaO. Even with recycling costs, CO{sub 2} extraction from air blown by wind through a 1 m{sup 2} aperture could eliminate the greenhouse gas impact of 100 kW gasoline engine, making it more favorable than renewable sources as solar, wind, or bio-mass. In addition it collects CO{sub 2} from dispersed sources, preserves the energy infrastructure, can yield negative emissions, and provide free CO{sub 2} transport to sequestration sites. We report economic and scaling arguments, atmospheric simulations and experiments that support pursuing air-extraction as an advanced CO{sub 2} capture technology. This method could process today's world output of CO{sub 2} with many collection units with a net area of 10{sup 3}-10{sup 4} km{sup 2} at costs of {approx} 5{cents}/liter of gasoline, a manageable scale for this massive undertaking.

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  • 2002 American Chemical Society Division of Fuel Chemistry Symposium on C02 Capture and Sequestration at the 223rd ACS National Meeting, Orlando Florida, April 7-1 1,2002

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  • Report No.: LA-UR-01-6473
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 789002
  • Archival Resource Key: ark:/67531/metadc718461

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • November 1, 2001

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  • Sept. 29, 2015, 5:31 a.m.

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  • Dec. 7, 2016, 11:30 a.m.

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DUBEY, M. K.; ZIOCK, H. & AL, ET. EXTRACTION OF CARBON DIOXIDE FROM THE ATMOSPHERE THROUGH ENGINEERED CHEMICAL SINKAGE, article, November 1, 2001; Los Alamos, New Mexico. (digital.library.unt.edu/ark:/67531/metadc718461/: accessed October 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.