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New Geoengineering Scheme Tackles Ocean Acidification, Too
suckmyclip
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7-22-2008 7:50 PM
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<div style="margin: 12px 0px; font-family: arial; color: #333333; background: #ffffff; border: solid 4px #e5e5e5; width: 100%; clear: left;"><div class="CM_CTB_Content_Wrap" style="margin: 0px; padding: 0px;background-color: #ffffff;"><div style="border-bottom: solid 1px #dcdcdc; white-space: nowrap; margin-bottom: 8px; background-color: #eeeeee ;background-image: url(http://www.clipmarks.com/images/source-bg.gif); background-repeat: repeat-x; height: 24px; line-height: 24px; vertical-align: middle; padding-bottom: 4px; color: #666666; font-size: 10px;" ><a href="http://clipmarks.com/clip-to-blog/" title="see clips that are hot right now"><img src="http://content.clipmarks.com/blog_embed/a152b577-fc31-4382-839c-20cef456d439/2D817596-BCFD-4F1F-A3D2-59998BBA71B2/" alt="" width="19" height="19" border="0" style="vertical-align: middle; margin: 0px 4px; display: inline; border: none; float:none;" /></a>clipped from <a title="http://blog.wired.com/wiredscience/2008/07/new-geoengineer.html" href="http://blog.wired.com/wiredscience/2008/07/new-geoengineer.html" style="font-size: 11px;">blog.wired.com</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://blog.wired.com/wiredscience/2008/07/new-geoengineer.html"><P><A href="http://blog.wired.com/photos/uncategorized/2008/07/22/limestonequarry.jpg"><IMG width="630" height="418" border="0" alt="Limestonequarry" title="Limestonequarry" src="http://blog.wired.com/wiredscience/images/2008/07/22/limestonequarry.jpg" /></A></p> <P> A scheme to dump quickline into the oceans to sequester more carbon in their depths is being revived by a British management consultant with backing from Shell. </p> <P>First proposed back in the 90s by Exxon engineer Haroon Kheshgi (<A href="http://www.ornl.gov/sci/eere/PDFs/CCTP_Wkshp_Rpt_6-28Final.pdf">pdf</A>), the idea takes advantage of a series of simple chemistry. Limestone, at high temperatures, breaks down into carbon dioxide and quicklime in a process that produces greenhouse gas. But dump that quicklime in seawater and it absorbs roughly twice as much CO2 as was released in the first reaction. </p> <P>The heat required to decompose the limestone will probably come from fossil fuel, generating more CO2, but even so, the sum of the process could be a reduction of the CO2 in the atmosphere.</P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://blog.wired.com/wiredscience/2008/07/new-geoengineer.html"><P>The quicklime scheme is different. It would go right at the heart of the CO2 buildup problem by removing the gas from the air and sequestering it in the world's oceans. It also makes the oceans more alkaline, directly combating ocean acidification. </P></blockquote></div><div style="margin: 0px 6px 6px 4px;"><table style="font-size: 11px;border-spacing: 0px;padding: 0px;" cellpadding="0" cellspacing="0" width="100%"><tr><td style="background:transparent;border-width:0px;padding:0px;"> </td><td align="right" style="background:transparent;border-width:0px;padding:0px;width:107px" width="107"><a href="http://clipmarks.com/share/2D817596-BCFD-4F1F-A3D2-59998BBA71B2/blog/" title="blog or email this clip"><img src="http://content6.clipmarks.com/images/c2b-foot.png" border="0" alt="blog it" width="107" height="17" style="border-width:0px;padding:0px;margin:0px;" /></a></td></tr></table></div></div>
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