Since mercury forms vapor so easily, it should be easily enriched in gas centrifuges like uranium (more easily, actually, since the starting isotopic abundance is higher and the chemistry is simpler). The high price of purified mercury-198 at present is probably due to it being a scientific curiosity with no industrial demand.
Even if you could separate mercury-198 for zero cost, it would only be 10% of the mercury production, and the yearly mercury production is 4500 t/yr, i.e., at most a maximum of 450 t/yr mercury-198. Compare this to gold production, which is 3100 t/yr, or silver production of 27000 t/yr. One might argue that mercury production could be ramped up if it is needed more, but its Earth's crust abundance is only slightly higher than silver, and again, mercury-198 would be 10x rarer than silver, i.e., only twice as abundant as gold.
> Since the process described here permanently transmutes mercury into a valuable material, it is possible that fusion transmutation could be considered as a form of waste disposal. While early plants will be highly incentivized to specifically transmute 198Hg, we note that the isotopes with higher neutron number can also in the long
term be transmuted to 197Au...
>The EU also has 6000 tons of mercury currently and expects to need to dispose of 11,000 tons over the next 40 years [95, 96]. As such, even with no change in existing processes, 14,000 metric tons of mercury could be made available for processing and isotope removal in the next ten years of fusion development, corresponding to 1400 tons of 198Hg and about the same mass of 197Au, with a current market value of ∼ $140B.
There are 7 stable isotopes of mercury, and mercury-198 makes up ~10% of naturally occurring mercury. The paper covers a lot of ground here, see section 5.2.2 "Mercury Isotope Separation", where they are shooting for $2.4/kg.
Ah, I was wondering why would anyone tell they can get 5 metric tonnes of gold (~$535M) for 2.5 GW of power (~$500). Regular mercury is ~$210/kg ($1.05m/5 tonnes or 500x cheaper than gold). Although, Hg198 has 10% natural abundance. So maybe they can use raw mercury and still get decent returns depending on what othere isotopes decay into.
It's 10% of natural mercury. you're looking into separating it cheaply instead, or at least hope the other naturally occuring isotopes don't cause too many problems.
philipkglass|7 months ago
https://en.wikipedia.org/wiki/Isotopes_of_mercury
Since mercury forms vapor so easily, it should be easily enriched in gas centrifuges like uranium (more easily, actually, since the starting isotopic abundance is higher and the chemistry is simpler). The high price of purified mercury-198 at present is probably due to it being a scientific curiosity with no industrial demand.
oh_my_goodness|7 months ago
mxmlnkn|7 months ago
https://en.wikipedia.org/wiki/Abundance_of_elements_in_Earth...
floxy|7 months ago
https://www.marathonfusion.com/alchemy.pdf
> Since the process described here permanently transmutes mercury into a valuable material, it is possible that fusion transmutation could be considered as a form of waste disposal. While early plants will be highly incentivized to specifically transmute 198Hg, we note that the isotopes with higher neutron number can also in the long term be transmuted to 197Au...
>The EU also has 6000 tons of mercury currently and expects to need to dispose of 11,000 tons over the next 40 years [95, 96]. As such, even with no change in existing processes, 14,000 metric tons of mercury could be made available for processing and isotope removal in the next ten years of fusion development, corresponding to 1400 tons of 198Hg and about the same mass of 197Au, with a current market value of ∼ $140B.
floxy|7 months ago
yoav|7 months ago
We just have to figure out how to nudge Mercury into the Sun… cheaply.
pointlessone|7 months ago
RA2lover|7 months ago
BoiledCabbage|7 months ago
Something isn't adding up