[samtheman]

uranium extracted from seawater is replenished continuously, so nuclear becomes as endless as solar, hydro and wind

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I tried googling but can’t find out this “replenished” works. Does anyone have anything on this?

[Campion]

I think they mean that the uranium is being washed off the land and absorbed from the seabed, etc., so the uranium removed from seawater is rapidly replaced.

[justlurking]

I tried googling but can’t find out this “replenished” works. Does anyone have anything on this?

It's in the article:

However, seawater concentrations of uranium are controlled by steady-state, or pseudo-equilibrium, chemical reactions between waters and rocks on the Earth, both in the ocean and on land. And those rocks contain 100 trillion tons of uranium. So whenever uranium is extracted from seawater, more is leached from rocks to replace it, to the same concentration. It is impossible for humans to extract enough uranium over the next billion years to lower the overall seawater concentrations of uranium, even if nuclear provided 100% of our energy and our species lasted a billion years.