Russell has his facts right but chemical implications wrong: The net reaction for the formation of CaCO3 shells can be written:
Ca2+ + 2 HCO3- ===> CaCO3 + H2O + CO2 Thus the formation of carbonate minerals from sea water acts as a carbon source to the atmosphere, not a sink. Greg Rau, among others, has proposed trying to run this reaction to the left to sequester CO2. This is sometimes known as "Accelerated Carbonate Weathering". http://crustal.usgs.gov/projects/CO2_sequestration/limestone.html _______________ Ken Caldeira Carnegie Institution for Science Dept of Global Ecology 260 Panama Street, Stanford, CA 94305 USA +1 650 704 7212 [email protected] http://dge.stanford.edu/labs/caldeiralab @kencaldeira *Caldeira Lab is hiring postdoctoral researchers.* *http://dge.stanford.edu/labs/caldeiralab/Caldeira_employment.html* *Our YouTube videos* The Great Climate Experiment: How far can we push the planet?<http://www.youtube.com/watch?v=ce2OWROToAI> Special AGU lecture: Ocean Aciditication: Adaptive Challenge or Extinction Threat? <https://www.youtube.com/watch?v=Pfz2l29aX9c> More videos <http://www.youtube.com/user/CarnegieGlobEcology/videos> On Sat, Jan 5, 2013 at 10:12 AM, Russell Seitz <[email protected]>wrote: > Given the proximity of so many of ISIS proncipal to Chesapeake Bay, I am > shocked they have not hit on the opportunity to combine the Beltway's lust > to regulate with the best features of carbon capture and SRM. > > The key to this win-win-win strategem is the humble mollusc* Ostrea > edulis.* > * > * > A dozen oysters sequester a hundred grams or more of carbon in their > shells, and were the daily consumption of a dozen made mandatory, their > removal from the sea would make room for the sequestration of a hundred > grams more. In addition, discarding the shells on land would at once take > a bite out of sea level rise, and, as ouster shells are pearly white , tend > to reduce the albedo footprint of those consuming them, especially if they > toss them on their asphalt coated roofs, parking lots and driveways to > reduce the energy toll and radiative forcing burden of the urban heat > island effect . > > Confident that perfoming the dimensional analysis necessary to persuade > themselves of the relative worth of this concept will encourage readers to > do likewise to their own submissions I remain > > Your , etc. > > >> -- > You received this message because you are subscribed to the Google Groups > "geoengineering" group. > To view this discussion on the web visit > https://groups.google.com/d/msg/geoengineering/-/_KEqoHead7IJ. > > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]. > For more options, visit this group at > http://groups.google.com/group/geoengineering?hl=en. > -- You received this message because you are subscribed to the Google Groups "geoengineering" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/geoengineering?hl=en.
