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(Tech Xplore)   Wow. They'd have enough salt to last forever   (techxplore.com) divider line
    More: Spiffy, Desalination, Water purification, Water, Drinking water, Electric charge, MIT researchers, portable desalination unit, Research  
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1294 clicks; posted to STEM » on 28 Apr 2022 at 2:05 PM (8 weeks ago)   |   Favorite    |   share:  Share on Twitter share via Email Share on Facebook



23 Comments     (+0 »)
View Voting Results: Smartest and Funniest
 
2022-04-28 1:29:03 PM  
Just wait until they try to bring that on a plane.
 
2022-04-28 1:32:58 PM  
Cool, if legit.

Kind of sounds like solar powered air conditioners.  Are they really a thing?
 
2022-04-28 1:35:18 PM  
A 0.3 liter an hour at the power requirements of a light bulb?  This could actually be quite a game changer for many places that have a lot of sun but little potable water.

If they can scale it up and make it reliable.  Big if.
 
2022-04-28 1:40:02 PM  
wiki.starbase118.netView Full Size


"Yesssssssssssss..."
 
2022-04-28 1:40:55 PM  
ICP technique?

Desalination, how the fark does that work
 
2022-04-28 1:50:42 PM  

EvilEgg: A 0.3 liter an hour at the power requirements of a light bulb? This could actually be quite a game changer for many places that have a lot of sun but little potable water.

If they can scale it up and make it reliable. Big if.


Back of the envelope, I think the theoretical minimum for desalination (gibbs free energy) is about 13 watt-hours per liter. So, yeah 20 watt-hours per liter is very impressive.

Still have the issue of what to do with all that salt though.
 
2022-04-28 1:57:46 PM  
That's cool.

Didn't read the whole article...is it just desalinization? Or can it sterilize the water as well for bio impurities?
 
2022-04-28 2:05:03 PM  

gopher321: That's cool.

Didn't read the whole article...is it just desalinization? Or can it sterilize the water as well for bio impurities?



FTFA:
The membranes repel positively or negatively charged particles-including salt molecules, bacteria, and viruses-as they flow past.
 
2022-04-28 2:10:57 PM  
scx1.b-cdn.netView Full Size


Yup, that sure looks like a user-friendly unit.
 
2022-04-28 2:14:53 PM  
Fark user imageView Full Size
 
2022-04-28 2:15:23 PM  
+1 for the classic, Subby

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2022-04-28 2:20:05 PM  
Nice Top Secret callback, subs.

"If they find out you've seen this, your life will be worth less than a truckload of dead rats in a tampon factory."

Good ol Dr. Paul Flamond.
 
2022-04-28 2:25:17 PM  
Enough salt to last a lifetime, you say?

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She approves.
 
2022-04-28 2:26:23 PM  
I remember where ive seen that device before
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2022-04-28 2:30:48 PM  
Big Filter gonna have them wacked.
 
2022-04-28 2:32:33 PM  

EvilEgg: gopher321: That's cool.

Didn't read the whole article...is it just desalinization? Or can it sterilize the water as well for bio impurities?


FTFA:
The membranes repel positively or negatively charged particles-including salt molecules, bacteria, and viruses-as they flow past.


It would be easy to clean up anything which got past the first stage using UV and/or chlorine gas generated from the salt water. The desalinization is the hard part.
 
2022-04-28 3:07:45 PM  
Thank you, Subby, for quoting the best Zucker brothers movie.  I have seen it 50+ times and it never gets old.
 
2022-04-28 4:34:25 PM  
They could use the waste water for the....LATRINE!!!!!
 
2022-04-28 4:37:12 PM  
I was watching raiders of the lost ark two nights ago and chocolate mousse is on the cargo ship!
 
2022-04-28 6:18:12 PM  
It looks a bit more complicated than we were promised, but we'll take it.

Fark user imageView Full Size
 
2022-04-28 6:25:12 PM  

Bajtaur: EvilEgg: A 0.3 liter an hour at the power requirements of a light bulb? This could actually be quite a game changer for many places that have a lot of sun but little potable water.

If they can scale it up and make it reliable. Big if.

Back of the envelope, I think the theoretical minimum for desalination (gibbs free energy) is about 13 watt-hours per liter. So, yeah 20 watt-hours per liter is very impressive.

Still have the issue of what to do with all that salt though.


Pack it and sell it.
Dump it back into the ocean
Sprinkle it on the fields of your enemies and till it into the ground so no things will grow there
Mix it with water to make salt water for your pasta
Refill old salt mines
Sell it to hippies as woo

Can I charge the company consulting fees now?
 
2022-04-28 8:26:02 PM  

englaja: Dump it back into the ocean


This is already what desal does and it's killing absolutely everything in the seas around the Middle East.

Pack and sell is probably the best idea, sea salt is produced by literally just evaporating seawater in the sun across huge fields.

If this produces brine, then you can do the same process but with brine, significantly increasing output (less water to evaporate).
 
2022-04-28 9:24:31 PM  
This is the first practical use I have ever seen of reversing the polarity.  Well done for the authors for adding that little gem to the mix.
 
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