http://www.thoriumapplications.com/Air%20Capture%20-%20Eliminating%20Global%20Warming%20Handout.pdf coal2nuclear.com has an extremely ambitious, yet practical-seeming, plan using MSRs to replace the largest 1200 coal generating plants worldwide, that are responsible for 30% of coal emissions; and while doing so, to purposefully build them to provide a 'new' baseload power output that is equivalent to peak output (thus also eliminating peaking natural gas plants, etc.); and use the extra power and heat generated (at night) to pull CO2 from the atmosphere using concrete-lined water canals at the former coal storage areas; pumps to bubble the water + sodium hydroxide NaOH to produce sodium carbonate NaCO3 ; to then produce calcium carbonate by adding calcium hydroxide Ca(OH)2 in a caustizer (and also producing NaOH to be reused in the first stage); which is dried and heated in a kiln to produce CO2 gas (for sequestration, or for synfuel production, or to make ultramafic rock). The quicklime (CaO) also produced here has water then added to it to make more Ca(OH)2 for a previous stage. He states that this process is commonly known, but not under much consideration due to the high heat and electrical energy requirements--which slack-time MSRs (especially LFTRs) can provide cheaply and in abundance. He states that this could make a huge dent in atmospheric CO2, both by eliminating the largest, biggest offending coal facilities' CO2 output (and peaking gas plants), and by pulling really large, really significant quantities of CO2 from the atmosphere.
This deserves comment from some of the professionals on this site, in my amateur opinion. If plausible technically, the questions remain on the economics and politics. In so far as China is choking on coal to the point of severe societal illness and IQ impairment; and is also spearheading world MSR prototyping; it seems plausible that such a scheme is possible; and that the Chinese would find it in their interests to push such a large build-out of MSRs on the world market for compelling capitalist profit considerations, besides the minor point (from the perspective of capitalist considerations) of saving the earth's human-favorable ecosystem.
If plausible technically, economically and so forth, it should be hailed as a major part of the solution to global warming and used to make inroads among the environmentalists who are biased against nuclear energy.
