this post was submitted on 21 Jan 2024
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Solarpunk technology

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MIT Passive Desalination system could produce freshwater that is cheaper than tap water, scales down to the size of a suitcase. (news.mit.edu)
submitted 8 months ago* (last edited 8 months ago) by ProdigalFrog@slrpnk.net to c/technology@slrpnk.net
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According to MIT, this technology works even at small scale, with one the size of a suitcase able to desalinate 6 litres per hour, and only needing to be serviced every few years.

Here's a video detailing how it works.

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[–] rebul@kbin.social 4 points 8 months ago (5 children)

What will happen to the salt?

[–] ProdigalFrog@slrpnk.net 19 points 8 months ago* (last edited 8 months ago) (1 children)

Because the device is tilted, saltier water flows out of the device and back into the main salt water reservoir due to having more mass than the less salty water. As long as the main reservoir was regularly flushed with new salt water, it would never become dangerously concentrated to marine life, which is a major advantage.

[–] Rutty@sh.itjust.works 2 points 8 months ago

If scalable… nifty

[–] JohnDClay@sh.itjust.works 2 points 8 months ago

Sea salt is also a possible source of lithium, so you could possibly mine and filter it for various resources.

[–] poVoq@slrpnk.net 2 points 8 months ago

If you can get it dry enough, there are huge underground salt mines that could be back filled.

But an larger ocean usually has enough currents that it dillutes out well enough to not be a major issue.

[–] xePBMg9@lemmynsfw.com 0 points 8 months ago

It's shot in to space!