Andrew, Professor Beget, and List:
I can’t answer either of Andrew’s questions - but the idea seems to be
novel - and should be quite cheap to test many places.
Prof. Beget: The Antarctic environment would be needed to understand
the moisture/lifetime issues, but a small test on the right altitudes for
creating a “snow”, the rate of fall, etc should be relatively easy with a
small plane in Alaska. Have you done any testing yet?
Ron
On Oct 27, 2014, at 6:19 PM, Andrew Lockley <[email protected]> wrote:
> Poster's note : maybe I'm missing something, but this seems neither safe nor
> practical to me
>
> https://agu.confex.com/agu/fm14/preliminaryview.cgi/Paper28515.html
>
> 2014 AGU Fall Meeting
> December 15 - 19, 2014
>
> Menu
>
> Antarctic Pumpdown---a New Geoengineering Concept for Capturing and Storing
> Atmospheric Carbon Dioxide
>
> James E Beget, University of Alaska Fairbanks, Fairbanks, AK, United States
>
> Abstract:
>
> Growing concentrations of carbon dioxide in the atmosphere are increasing
> global temperatures. This is projected to impact human society in negative
> ways. Multiple geoengineering approaches have been suggested that might
> counteract problems created by greenhouse warming, but geoengineering itself
> can be problematic as some proposed methods would pose environmental risks to
> the oceans, atmosphere, and biosphere. I propose a new approach that would
> remove CO2 from the atmosphere and store it in the cryosphere. Carbon dioxide
> would be captured by seeding the atmosphere over a designated small region of
> central Antarctica with monoethanolamine (MEA), a well known compound
> commonly used for CO2capture in submarines and industrial processes.
> Monoethanolamine captures and retains carbon dioxide until it encounters
> water. Because MEA crystals are stable when dry, they would fall from the
> atmosphere just in the local area where the seeding is done, and they would
> be naturally buried by snowfalls and preserved in the upper parts of the East
> Antarctic Ice Sheet, where thawing does not occur. The carbon dioxide removed
> from the atmosphere by this process could reside safely in this geologic
> reservoir for thousands of years, based on known flow characteristic of the
> ice sheet. Also, carbon dioxide stored in this way could be recovered in the
> future by drilling into the ice sheet to the frozen storage zone. The CO2
> Antarctic Pumpdown (CAP) concept could potentially be used to stabilize or
> reduce the amount of carbon dioxide in the atmosphere, and then to store the
> carbon dioxide safely and inexpensively in a stable geologic reservoir
>
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