Alahednews
english.alahednews.com.lb
Al-Ahed Telegram
Democrats Withdraw Offer to Fund US-Mexico Border Wall Afghanistan: Blast Heard as Gunmen Attack ’Save the Children’ Office in Jalalabad Libya: 33 Dead as Twin Blasts Target Worshippers outside Benghazi Mosque Arab Joint List Members Removed during Pence’s Knesset Speech Amnesty UK Withdraws From Hosting ’Israel’ Event Due To Settlements Amazon Opens First Supermarket with No Checkouts At All Iran Drills: Second Day Witnesses Cruise Missile Launching Scores Killed by Yemeni Missile on Saudi Camp Glass Was Made in Africa Centuries before Arrival of Europeans Iran: Europe’s ‘Concessions’ Make Trump less Committed to Nuclear Deal Blast Occurs Outside '#SavetheChildren' Office in #Afghan City of #Jalalabad, Fighting Underway Magnitude 8.2 #Quake Off #Alaska Prompts #Tsunami Warning #Bahraini Regime Forces Detain Dozens from all #Bahraini Provinces after Dawn Raids, Take Them to Unknown Destination #Yemen: 8 Civlians, including 4 Children, Martyred in a #Saudi Airstrike on their car in #Saada #Yemeni Missile Force Launches a Short-range Ballistic Missile on the #Saudi Najran Force Military Base #Syrian Army, Allies Start Storming the Abo Dhhour Military Airbase #Syrian Army, Allies Advance towards the intersection of Om Joura town near the Abu Dhhour Military Airbase 11 Killed, 46 Injured in #Turkey Bus Crash Sayyed #Nasrallah: #Hezbollah affirms its rejection of the #American arrogance and the #Zionist scheme Sayyed #Nasrallah: There are #Arab regimes that continue to pressure the #Palestinians to accept the little presented to them
Guestbook mailinglist.php arabic site french site spanish site facebook twitter rss page
News Categories » NEWS » Miscellaneous

Decrease Font Size Increase Font Size  Print Page
New Device Makes Water Out of Desert Air
Local Editor

Scientists found a new solution for bringing clean water to remote areas.


New Device Makes Water Out of Desert Air

A team created a solar-powered device that can produce drinking water out of air -- even in desert climates, according to the researchers from the Massachusetts Institute of Technology and the University of California, Berkeley.

"I'm most excited about being able to realize a functioning device in these remote areas and to be able to provide clean water to all the people who need it," Evelyn Wang, associate mechanical engineering professor at MIT and co-author of the paper first published in the journal "Science," told CNNTech.

While similar methods like atmospheric water generators already exist, the new project works in drier climates and uses less energy.

The new device looks like a box. Inside the box is a layer of a custom metal-organic framework [also called a MOF], which is essentially a material that acts as a sponge to capture as much water as possible when the box is open. Water can be collected from the air and rain.

Once the water is captured, the box is closed manually and exposed to the sun. The sun heats up the material so it releases water from its surface in the vapor phase. The vapor is then converted to the liquid phase with a condenser -- which can cool the vapor even in hot climates -- to create clean drinking water.

It's capable of collecting 2.8 liters of water per kilogram of metal-organic framework that is used. It can do this in areas where the humidity level is as low as 20%, compared to existing devices that work in 50% humidity.

MOFs are one-, two- or three-dimensional compounds invented about 20 years ago by Berkeley professor Omar Yaghi, one of the researchers behind the new device. They are an extremely porous material and water molecules can easily attach to the framework. The MOF used in the new device is called MOF-801, which was first reported a few years ago.

Right now, the new system is in the "proof of concept" phase to show it can work, Wang said. The key, she added, will be scaling up the prototype. The researchers have developed the materials in a lab environment and now will have to make them in larger quantities -- which Wang said will reduce costs. Companies like German manufacturer BASF have produced large-scale quantities of MOFs previously, she noted.

The prototype is currently the size of a small tissue box, but the final product is expected to be about as big as a carry-on suitcase so it can produce enough water for a family of four. The researchers do not have a cost estimate yet, but they plan to work with not-for-profits and local governments in the developing world to distribute the device.

It's designed for places that are extremely dry, but that still have a lot of sun, such as North Africa and India. "We can deploy [the] devices in those types of regions, where all they need is this device and sun," Wang said.

Two-thirds of the world's population is experiencing water shortages, according to the researchers.

Source: News Agencies, Edited by website team

 

20-04-2017 | 11:13


Name
E-Mail
Comment Title
Comment
Human Verification


News Coverage

Related News

Search
To Top