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by kwhitefoot 1933 days ago
Sounds plausible but of course there are lots of details to be worked out including how to recover the magnetite and how much it costs

But it's from September 2019. Does anyone know if anything has happened with the idea in the last 18 months.
1 comments
iagovar 1933 days ago
> how to recover the magnetite

Won't that happen with the same magnet?

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kwhitefoot 1932 days ago
Presumably the magnetite is very finely divided and intimately connected to the material it is removing from the water; to reuse it surely one must detach the magnetic material from the plastic. It is not obvious to me that this is easy to do with high effectiveness. Presumably we do not want finely divided magnetic material to escape into the environment or for it to be included in the recovered plastic.
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