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New Material Could Significantly Increase Stationary Source CO2 Capture Capacity
3 March 2008
Researchers from Georgia Tech are reporting the development of a new, low-cost material for capturing carbon dioxide from the smokestacks of coal-fired electric power plants and other industrial sources. Their study is scheduled to be published in the 19 March issue of the Journal of the American Chemical Society.
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| Hyperbranched aminosilica (HAS). Click to enlarge. |
Absorbent liquids currently used in cabron capture are energy intensive and expensive, according to the researchers. Current solid adsorbents show promise, but many suffer from low absorption capacities and lack stability after extended use.
The team developed a new solid adsorbent—a hyperbranched aminosilica (HAS)—that avoids those problems. The advantage of this new adsorbent over previously reported adsorbents is the stability of the organic groups covalently bound to the silica support compared to those made by physisorbed methods.
When compared to traditional solid adsorbents under simulated emissions from industrial smokestacks, the new material captured up to seven times more carbon dioxide than conventional solid materials, including some of the best carbon dioxide adsorbents currently available, the researchers said. The material also shows greater stability under different temperature extremes, allowing it to be recycled numerous times.
Resources
Jason C. Jicks, et.al., “Designing Adsorbents for CO2 Capture from Flue Gas-Hyperbranched Aminosilicas Capable of Capturing CO2 Reversibly” J. Am. Chem. Soc., ASAP Article 10.1021/ja077795v S0002-7863(07)07795-5
March 3, 2008 in Brief | Permalink | Comments (5) | TrackBack (0)
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Comments
Nothing about regeneration energy requirements?
Posted by: Engineer-Poet | Mar 3, 2008 10:12:28 AM
Nothing in the 2-page paper, either.
Posted by: Engineer-Poet | Mar 3, 2008 10:15:28 AM
Assuming that this process works at a reasonable cost, where will all the CO2 (many million tonnes) captured go?
Posted by: Harvey D | Mar 3, 2008 11:26:39 AM
Ok .. so now we have the technology to capture CO2 in the stack.
... next step is figuring out what to do with it. How do we release the oxygen and store the Carbon?
Posted by: John Taylor | Mar 3, 2008 5:20:05 PM
The most likely use for the CO2 at this time would be for EOR. Not exactly carbon neutral, but at least it will be some incentive to start to capture the carbon. After that the choices are recycling it with something like algae or sequestering it deep underground or deep in the ocean.
Posted by: Neil | Mar 3, 2008 7:23:36 PM
