tag:blogger.com,1999:blog-9560953.post5765873636136938864..comments2023-12-31T19:34:14.853-05:00Comments on Dymaxion World: Air capture of CO2?johnhttp://www.blogger.com/profile/09690430991814528863noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-9560953.post-10515453938603284102008-10-15T14:21:00.000-04:002008-10-15T14:21:00.000-04:00Should have read the article before commenting. La...Should have read the article before commenting. Lab demo, not prototype. And though electricity costs are low, capital costs appear to be high. Displacing fossil fuels still looks to be cheaper than capturing carbon from the air.<BR/><BR/>However we should be funding this type of research, because there are two places where it can play a serious role.<BR/><BR/><BR/>1) Once we get at or near zero emissions we will still need stuff of this type to go GHG negative which Hansen seems to think we will need to do. Given the climate disruption that has already taken place, improved forestry and agriculture may not be enough to make up for increased forest fires and feed releases from soil and ocean. So in the long run this stuff will almost certainly be needed.<BR/><BR/>In the medium run, while reducing emisison may be cheaper than capture up to a point, it seems likely that onces we reduce fossil fuel use per unit of GDP by between 80% and 95%, capture may indeed prove cheaper than the remaining 5% to 15%.Unknownhttps://www.blogger.com/profile/02515461340714745500noreply@blogger.comtag:blogger.com,1999:blog-9560953.post-86168284503543015292008-10-15T14:12:00.000-04:002008-10-15T14:12:00.000-04:00Hmm - the carbon balance certainly sounds good. 10...Hmm - the carbon balance certainly sounds good. 100 kWh produced by coal puts a bit over 21 pounds of CO2 into the air. If that can remove a metric ton, that is one heck of net CO2 removal. Even better if it is from natural gas, wind or sun. Not going to endorse this, but certainly worth looking into further. For example, I'd like know how solid these figures are.Unknownhttps://www.blogger.com/profile/02515461340714745500noreply@blogger.comtag:blogger.com,1999:blog-9560953.post-75843946984534082962008-10-15T12:32:00.000-04:002008-10-15T12:32:00.000-04:00couldn't we use it to make the carbon nanotubes th...couldn't we use it to make the carbon nanotubes that will power our electric cars?<BR/><BR/>I don't really know the manufacturing processes, maybe it's not practical. But given the multiple potential uses for carbon these days...Anonymousnoreply@blogger.com