Artificial Trees: Capturing CO2 A Thousand Times Faster
Professor Klaus Lackner at Columbia University and also co-founder of Global Research Technologies (GRT) in Tucson, Arizona, USA, has put forward a device called "artificial tree" that captures CO2 a thousand times faster than a real one. Artificial tree is a device that traps CO2 directly from the atmosphere using a process similar to sequestration at coal-fired power plants. The CO2 passes over a chemical absorber (the ‘leaves’ of the artificial tree) to which the CO2 molecule attaches.Professor Lackner estimates that each ‘tree’ with a capture area of 10m by 10m (32.8ft by 32.8ft) can absorb 1,000 tons each year.
Once you’ve captured the CO2 on the absorber you then have to provide energy to remove the CO2 molecule, compress it and liquefy it.The liquefied CO2 can then be stored underground or used for several different purposes.If the initial energy source is renewable then the process becomes almost CO2 neutral at the front end and a total success at sequestrating CO2 from the atmosphere.It seems that Lackner and GRT have found a sorbent material that requires low energy to remove the CO2 molecule and the end-to-end process is purported to be up to 80% efficient when considered in terms of how much CO2 is removed from the atmosphere versus how much is released by the energy production to operate the machine.
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Once you’ve captured the CO2 on the absorber you then have to provide energy to remove the CO2 molecule, compress it and liquefy it.The liquefied CO2 can then be stored underground or used for several different purposes.If the initial energy source is renewable then the process becomes almost CO2 neutral at the front end and a total success at sequestrating CO2 from the atmosphere.It seems that Lackner and GRT have found a sorbent material that requires low energy to remove the CO2 molecule and the end-to-end process is purported to be up to 80% efficient when considered in terms of how much CO2 is removed from the atmosphere versus how much is released by the energy production to operate the machine.
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Labels: co2, energy, greenhouse-gases
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