Just out of curiosity, I suspect that sequestering carbon is exothermic, not exothermic. So what is the net gain since the energy probably comes from carbon based generating power plants?
On Wed, Jun 26, 2019, 5:29 PM Jose Mario Quintana < jose.mario.quint...@gmail.com> wrote: > " > Whether it does or not, a > British Columbia-based firm called Carbon Engineering has built a plant to > capture CO2 from the atmosphere, at a cost of <$100 per metric ton (100 > USD/t). > " > > The video at the link, > > Bill Gates and Big Oil back this company that’s trying to solve climate > change by sucking CO2 out of the air > > > https://www.cnbc.com/2019/06/21/carbon-engineering-co2-capture-backed-by-bill-gates-oil-companies.html > > using information from last year puts the cost at "$94-232 per ton of CO2." > > For what is worth, this is yet another alternative suggested by Gregory > Benford: > > Put a Fresnel lens at the (Earth-Sun) Lagrangian point L1 to reduce the > solar energy reaching the Earth by 0.5% to 1% with an estimated (more than > a decade ago) cost of $10B. > > As a potential bonus, assuming that the positive feedback loop of CO2 and > temperature which has been "confirmed" stands, more CO2 (in the atmosphere) > -> higher (global) temperature -> more CO2 -> ... and presumably, lower > temperature -> less CO2 -> lower temperature -> ... > > Interestingly, in his introduction to the mid-nineties FAR FUTURES > anthology he wrote: > > "Current thinking holds that the big, long term problem we face is the loss > of carbon dioxide from our air. This gas, the food of the plants, gets > locked up in rocks. Photosynthetic organisms down at the very base of the > food chain extract carbon from air, cutting the life change." > > > > On Fri, Jun 7, 2019 at 12:18 PM Ian Clark <earthspo...@gmail.com> wrote: > > > The addons math/tabula and its parent addons math/cal and math/uu have > been > > largely rewritten and are now far stabler than they were. > > > > The main way to get to grips with TABULA is via studying the built-in > > t-tables ("TABULA-tables") SAMPLE0--SAMPLE9… > > > > https://code.jsoftware.com/wiki/TABULA/samples > > > > The last one, SAMPLE9, is particularly noteworthy. See this page for > > details… > > > > > > > https://code.jsoftware.com/wiki/TABULA/samples/cost_to_capture_atmospheric_CO2 > > > > Atmospheric CO2 concentration has been rising steadily since 1960, when > it > > first began to be measured regularly at Mauna Loa, HI. At that time it > > stood at <320 ppm (parts-per-million). Now it stands at >400 ppm, an > > increase of over 80 ppm. > > > > This observed level of atmospheric carbon is gaining wider acceptance as > > having a damaging effect on the world's climate. Whether it does or not, > a > > British Columbia-based firm called Carbon Engineering has built a plant > to > > capture CO2 from the atmosphere, at a cost of <$100 per metric ton (100 > > USD/t). They have attracted $68 million investments from Chevron, > > Occidental and coal giant BHP. > > > > https://www.bbc.co.uk/news/science-environment-47638586 > > > > I don't want to take sides over this. Nor to invite the taking of sides > in > > this thread. Rather it's my aim to develop tools to help the rest of us > > explore the figures for ourselves, whatever side we're on. Relying on > > specialists to do the calculations is simply to promote a new world > > religion, with applied mathematicians as its priesthood. > > > > So I thought I'd take Carbon Engineering's current price and use TABULA > to > > calculate what it would cost to restore atmospheric concentration to 1960 > > levels. > > > > The cost comes out rather high: around 57 times the projected USA budget > > deficit for FY2020, would you believe? > > > > This raises vital questions for me: > > > > ++ are the input figures reliable? I used Google to track them down, but > > have I copied them over correctly? > > > > ++ is TABULA doing it right? I'm terrified of orders-of-magnitude errors, > > which can so easily arise with a misplaced prefix 'k' (kilo-) or 'G' > > (giga-). > > > > Would anyone fancy checking my calculations? > > > > Ian Clark > > ---------------------------------------------------------------------- > > For information about J forums see http://www.jsoftware.com/forums.htm > > > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
