I don't think that erosion in tunnels is the most interesting part. The advantage of olivine is that it reacts easily (geologically speaking) with CO2 and water, and converts the CO2 to bicarbonate in solution. This process of weathering has throughout the geological history of the earth removed excess CO2 from the atmosphere, and stored it as carbonate rocks (limestones and dolomites). These carbonate rocks contain more than 1 million times more CO2 than the atmosphere, the oceans and the biosphere together. Without this process the earth would be unlivable, because the CO2 pressure of our atmosphere would be around 100 bars, and the surface temperature of the earth around 500 degrees centigrade, if all the CO2 released by volcanoes had accumulated in the atmosphere. A vote of thanks to natural weathering, Olaf Schuilng
-----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of [email protected] Sent: zaterdag 7 februari 2015 20:41 To: [email protected] Subject: [geo] Renewable Energy in Geoengineering Interesting idea. To add to this brainstorming - is it possible that the water itself could somehow do the grinding? Water jet cutting is very developed in industry. Or perhaps water passed throug tunnels in olivine rocks may create useful erosion... -- You received this message because you are subscribed to the Google Groups "geoengineering" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/geoengineering. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "geoengineering" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/geoengineering. For more options, visit https://groups.google.com/d/optout.
