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Desalination in a freezer? (hackertalks.com)

submitted 3 weeks ago by [email protected] to c/[email protected]

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If freezing salt water produces freshwater ice, why is desalinization such a difficult problem?

https://www.youtube.com/watch?v=c2wafIzuvlI

I was watching the above minute physics video, and they indicated in a brief one sentence line that saltwater freezes into freshwater ice. That got me thinking.

Under what circumstances could you actually freeze salt into ice? To make salt ice?

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[–] [email protected] 16 points 3 weeks ago

It's not that desalinisation is "hard", you could just boil the water for example. It's that it's extremely energy intensive and complex to setup a process that's both repeatable in industrial quantities and can produce enough flow to satisfy demand.