Removing CO2 from Air – University of Calgary Scientists Undertake Research

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In research conducted at the U of C, a team of researchers showed it is possible to reduce CO2 using a relatively simple machine that can capture the trace amount of CO2 present in the air.

“The thermodynamics suggests that air capture might only be a bit harder than capturing CO2 from power plants. We are trying to turn that theory into engineering reality,” said the team lead.

The U of C team has devised a new way to apply a chemical process derived from the pulp and paper industry to cut the energy cost of air capture in half, and has filed two provisional patents on their end-to-end air capture system.

Energy-efficient and cost-effective air capture could play a valuable role in complementing other approaches for reducing emissions from the transportation sector.

Keith and his team showed that they can capture CO2 directly from the air with less than 100 kilowatt-hours of electricity per tonne of carbon dioxide.

CO2 capture from air to me appears like pure research topic right now. With a CO2 concentration of less than 0.3%, air is possibly not the best medium from which to extract CO2. It makes far more sense to try it from the concentrated sources from where they are emitted. Guess it is fairly a no-brainer that it should cost much less to capture it from a concentrated source than from such a diffuse source.

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2 Responses to “Removing CO2 from Air – University of Calgary Scientists Undertake Research”

  1. Jacintha Grace

    Capturing CO2 from the air where the concentration of CO2 is 0.04 per cent seems absurd, prima facie.

    I guess prof Keith knows better.

    When the whole world is trying desperately to to do cost-effective capture at power plants where CO2 produced is at a concentration of more than 10 per cent.

  2. Nicolle Harriot

    From what Keith is saying in U of Cs website
    http://www.ucalgary.ca/news/september2008/keith-carboncapture

    this looks more efficient than CCS. I will be interested to know more about the progress made by Keith and his colleageues.


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