In field tests, device harvests water from desert air

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Gawdzilla Sama
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In field tests, device harvests water from desert air

Post by Gawdzilla Sama » Thu Mar 29, 2018 12:49 pm

In field tests, device harvests water from desert air
System could provide drinking water even in extremely arid locations

Date: March 22, 2018

Source: Massachusetts Institute of Technology

Summary: You really can extract clean drinking water right from the air, even in the driest of deserts, researchers have found. They've demonstrated a real-world version of a water-harvesting system based on metal organic frameworks, or MOFs, that they first described last year.
It seems like getting something for nothing, but you really can get drinkable water right out of the driest of desert air.

Even in the most arid places on Earth, there is some moisture in the air, and a practical way to extract that moisture could be a key to survival in such bone-dry locations. Now, researchers at MIT have proved that such an extraction system can work.

The new device, based on a concept the team first proposed last year, has now been field-tested in the very dry air of Tempe, Arizona, confirming the potential of the new method, though much work remains to scale up the process, the researchers say.

The new work is reported today in the journal Nature Communications and includes some significant improvements over the initial concept that was described last year in a paper in Science, says Evelyn Wang, the Gail E. Kendall Professor in the Department of Mechanical Engineering, who was the senior author of both papers. MIT postdoc Sameer Rao and former graduate student Hyunho Kim SM '14, PhD '18 were the lead authors of the latest paper, along with four others at MIT and the University of California at Berkeley.

Last year's paper drew a great deal of attention, Wang says. "It got a lot of hype, and some criticism," she says. Now, "all of the questions that were raised from last time were explicitly demonstrated in this paper. We've validated those points."

The system, based on relatively new high-surface-area materials called metal-organic frameworks (MOFs), can extract potable water from even the driest of desert air, the researchers say, with relative humidities as low as 10 percent. Current methods for extracting water from air require much higher levels -- 100 percent humidity for fog-harvesting methods, and above 50 percent for dew-harvesting refrigeration-based systems, which also require large amounts of energy for cooling. So the new system could potentially fill an unmet need for water even in the world's driest regions.
Continues...
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Re: In field tests, device harvests water from desert air

Post by Austin Harper » Thu Mar 29, 2018 12:51 pm

Tell me about the waters of your homeworld, Usul.
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Re: In field tests, device harvests water from desert air

Post by Gawdzilla Sama » Thu Mar 29, 2018 1:05 pm

Austin Harper wrote:Tell me about the waters of your homeworld, Usul.
"I was planning on going into Tashi Station to pick up some power converters!"
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Re: In field tests, device harvests water from desert air

Post by Poodle » Thu Mar 29, 2018 2:12 pm

It's good - but I'll wait until it can produce 2.5 litres a day in a dry climate before getting excited. That's the point at which Arrakis becomes habitable.

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Re: In field tests, device harvests water from desert air

Post by Gord » Thu Mar 29, 2018 2:18 pm

I'll believe it when Thunderf00t sees it. :P

https://www.youtube.com/watch?v=EGTRX6pZSns
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Re: In field tests, device harvests water from desert air

Post by Gawdzilla Sama » Thu Mar 29, 2018 2:23 pm

Yeah, MIT is notoriously unreliable. They can't even keep cars off their dome.
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Re: In field tests, device harvests water from desert air

Post by ElectricMonk » Thu Mar 29, 2018 4:48 pm


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Re: In field tests, device harvests water from desert air

Post by Gord » Mon Sep 24, 2018 8:34 am

"Knowledge grows through infinite timelessness" -- the random fictional Deepak Chopra quote site
"Imagine an ennobling of what could be" -- the New Age BS Generator site
"You are also taking my words out of context." -- Justin
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Re: In field tests, device harvests water from desert air

Post by landrew » Fri Oct 12, 2018 3:53 pm

Gord wrote:
Mon Sep 24, 2018 8:34 am
And then this happened:

https://www.youtube.com/watch?v=WopuF9vD7KE
Who doesn't love the taste of water from a dehumidifier?
All that dust, germs, dirt and viruses pulled out of the air?
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Re: In field tests, device harvests water from desert air

Post by landrew » Sat Oct 13, 2018 3:41 pm

Isn't there a place in hell for companies that make fraudulent commercials like that?
If you promise to use it to help the Third World, does that give you a pass?

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Re: In field tests, device harvests water from desert air

Post by Gord » Sat Oct 13, 2018 10:27 pm

landrew wrote:
Sat Oct 13, 2018 3:41 pm
Isn't there a place in hell for companies that make fraudulent commercials like that?
No, the special place in hell is reserved for Trudeau for some reason: https://www.cnn.com/2018/06/10/politics ... index.html
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Re: In field tests, device harvests water from desert air

Post by TJrandom » Sat Oct 13, 2018 11:30 pm

landrew wrote:
Sat Oct 13, 2018 3:41 pm
Isn't there a place in hell ...
Yes... it’s located in the Arizona desert - near sheriff Joe...

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Re: In field tests, device harvests water from desert air

Post by landrew » Sun Oct 14, 2018 2:17 am

Joe Arpaio got a nice big pardon from Trump, just for being the type of guy he is.
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