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Direct capture of CO₂ from ambient air.

The best overview of our air capture work is illustrated in a presentation given at the MIT Carbon Sequestration Forum IX in September 2008. (PDF, updated as of February 2009)

GHGT-9 Poster - Washington, DC. November 17, 2009. (PDF)

This experiment was featured on Discovery Channel's "Project Earth" series, 'Fixing Carbon' episode. Discovery Project Earth - The Fixing Carbon Scrubber. [Click here for note on the technical content of the Discovery Channel program]

Research Papers

122. David Keith. (2009). Why Capture CO₂ From The Atmosphere. Science, 325: 1654-1655.
[Abstract] [Full Text]

116. David W Keith, Kenton Heidel and Robert Cherry. Capturing CO₂ from the atmosphere: Rationale and Process Design Considerations. Geo-Engineering Climate Change. B. Launder and M. Thompson ed, Cambridge University Press. (PDF) [Please request password from Hollie Roberts (robertsh(at)ucalgary.ca)]

120. Mahmoudkhani M., Heidel K.R., Ferreira J.C., Keith D.W. and Cherry R.S. (2009). Low energy packed tower and caustic recovery for direct capture of CO₂ from air. Energy Procedia, 1: 1535-1542. (PDF)

101. Maryam Mahamoudkhani and David W. Keith. (2009). Low-energy sodium hydroxide recovery for CO₂ capture from air. International Journal of Greenhouse Gas Control Technologies, 3: 376-384. (PDF)

103. Frank S. Zeman and David W. Keith (2008). Carbon Neutral Hydrocarbons. Philosophical Transactions of the Royal Society (A), 366: 3901-3918. (PDF)

97. Joshuah K. Stolaroff, David W. Keith and Greg V. Lowry (2008). Carbon dioxide capture from atmospheric air using sodium hydroxide spray. Environmental Science & Technology, 42: 2728-2735. (PDF)

84. Joshua Stolaroff, David Keith and Greg Lowry (2006). A pilot-scale prototype contactor for CO₂ capture from ambient air: cost and energy requirements. GHGT-8, 8th International Conference on Greenhouse gas Control Technologies Trondheim, Norway. (PDF)

TH5. Joshuah Stolaroff (2006). Capturing CO₂ from ambient air: A feasibility assessment. Civil and environmental engineering and Engineering and public policy, Carnegie Mellon. (PDF)
(This version is formated for on screen viewing and compact printing. A version with the original formating is available upon request)
infinity(at)cmu.edu - jointly supervised with Greg Lowry.

68. Joshuah K. Stolaroff, Gregory V. Lowry and David W. Keith (2005). Using CaO- and MgO-rich Industrial Waste Streams for Carbon Sequestration. Energy Conversion and Management, 46: 687-699. (PDF)

51. David W. Keith, Minh Ha-Duong and Joshuah K. Stolaroff (2005). Climate strategy with CO₂ capture from the air. Climatic Change, 74: 17-45. (PDF)