EDIT: Sorry, I was looking at the wrong article, this one: https://www.ans.org/news/article-1882/nuclear-power-becomes-completely-renewable-with-extraction-of-u

EDIT: Sorry, I was looking at the wrong article, this one: https://www.ans.org/news/article-1882/nuclear-power-becomes-completely-renewable-with-extraction-of-uranium-from-seawater/ https://www.ans.org/news/article-1882/nuclear-power-becomes-... This technology uses polyethylene fibers coated with amidoxime. A quick look at Wikipedia reveals that oximes are commonly used as ligands and sequestering agents for metal ions [1]. I wonder -- are there useful amounts of other metals captured by these fibers? Gold? Silver? Rare-earths? [1] https://en.wikipedia.org/wiki/Oxime https://en.wikipedia.org/wiki/Oxime It talks about the amidoxime-coated fibers.