This solar-powered device produces energy and cleans water at the same time

B2F86F57-755D-410B-BFA2-486882F7DC03

UNDER THE SUN Solar panels with water purification devices mounted on their backs (illustrated) could produce freshwater and electricity simultaneously.

 Still a prototype, the machine could one day help curb electricity and freshwater shortages

By mounting a water distillation system on the back of a solar cell, engineers have constructed a device that doubles as an energy generator and water purifier.

While the solar cell harvests sunlight for electricity, heat from the solar panel drives evaporation in the water distiller below. That vapor wafts through a porous polystyrene membrane that filters out salt and other contaminants, allowing clean water to condense on the other side. “It doesn’t affect the electricity production by the [solar cell]. And at the same time, it gives you bonus freshwater,” says study coauthor Peng Wang, an engineer at King Abdullah University of Science and Technology in Thuwal, Saudi Arabia.

Continue reading… “This solar-powered device produces energy and cleans water at the same time”

0

This desalination device delivers cheap, clean water with just solar power

2E0AA996-CD6C-426D-B0EC-6DE80FC2B0AA

In a coastal city in Namibia, a small shipping container near the beach sits surrounded
by solar panels. Inside, new technology uses that solar power
to turn ocean water from the Atlantic into drinking water.

Namibia is in the middle of a prolonged drought. The president recently declared the second state of emergency in three years because the lack of rain is leading to severe food shortages. But if scaled up, this technology could help supply households and agriculture with fresh water. The basic tech that it uses for desalination, called reverse osmosis, isn’t new. But because the system can run on solar power, without the use of batteries, it avoids the large carbon footprint of a typical energy-hungry desalination plant. It’s also significantly cheaper over the lifetime of the system.

Continue reading… “This desalination device delivers cheap, clean water with just solar power”

0

Radical desalination approach may disrupt the water industry

8A38E9FC-CBF7-40A6-99BB-155E08C50CCAIllustration describing fresh water production from hypersaline brines by temperature swing solvent extraction.

Hypersaline brines—water that contains high concentrations of dissolved salts and whose saline levels are higher than ocean water—are a growing environmental concern around the world. Very challenging and costly to treat, they result from water produced during oil and gas production, inland desalination concentrate, landfill leachate (a major problem for municipal solid waste landfills), flue gas desulfurization wastewater from fossil-fuel power plants, and effluent from industrial processes.

If hypersaline brines are improperly managed, they can pollute both surface and groundwater resources. But if there were a simple, inexpensive way to desalinate the brines, vast quantities of water would be available for all kinds of uses, from agriculture to industrial applications, and possibly even for human consumption.

Continue reading… “Radical desalination approach may disrupt the water industry”

0

Solar-powered moisture harvester collects and cleans water from air

E876EDCD-08C2-439C-9984-65F09634F0BA

Access to clean water remains one of the biggest challenges facing humankind. A breakthrough by engineers at The University of Texas at Austin may offer a new solution through solar-powered technology that absorbs moisture from the air and returns it as clean, usable water.

The breakthrough, described in a recent issue of the journal Advanced Materials, could be used in disaster situations, water crises or poverty-stricken areas and developing countries. The technology relies on hydrogels, gel-polymer hybrid materials designed to be “super sponges” that can retain large amounts of water.

A research team led by Guihua Yu in UT Austin’s Cockrell School of Engineering combined hydrogels that are both highly water absorbent and can release water upon heating. This unique combination has been successfully proved to work in humid and dry weather conditions and is crucial to enabling the production of clean, safe drinking water from the air.

Continue reading… “Solar-powered moisture harvester collects and cleans water from air”

0

Amazing solar panel device is now open source

Anyone who has wanted to generate their own energy and filter their own water can now do so with an amazing open source device.

Speaking on stage at Inspirefest 2018, Chinese-Canadian mechanical and electrical engineer Eden Full Goh described what inspired her to develop a cheap, easy-to-build solar panel device called the SunSaluter.

Continue reading… “Amazing solar panel device is now open source”

0

These cheap paper water filters remove lead, arsenic, and bacteria

IMG_5824

Just pour water through the Mesopaper and it does the rest.

On a visit to Bangladesh in 2011–where an estimated 20 million people are exposed to arsenic in local drinking water–scientist Liangjie Dong worked with a team to teach residents how to use a filtration system he designed that could make the water safe. The technology worked, but it wasn’t self-explanatory: it required training in how to use a special cartridge, and special instructions for how to dispose of it after use.

Continue reading… “These cheap paper water filters remove lead, arsenic, and bacteria”

0

These solar panels that can pull clean drinking water out of the air just got a big boost

IMG_4649

Zero Mass Water makes solar panel arrays that pull clean drinking water from the air.

The $4,500 arrays just launched in the United States.

Zero Mass arrays could come in handy in areas where water sources are far away or scarce. Some homeowners have purchased arrays as an alternative to plastic water bottles.

Continue reading… “These solar panels that can pull clean drinking water out of the air just got a big boost”

0

Solution for Haiti – HydroWell Village – Produces Clean Water From Virtually Any Water Source

[youtube]http://www.youtube.com/watch?v=OQQLNpqNn1g&feature=player_embedded[/youtube]

HyrdoWell Village

Haiti is looking for help with their water supply, and this may be it. Providing water in remote and austere environments is a logistical nightmare.  In emergencies, water systems take too long to setup.  Bulk water is expensive and difficult to deliver.  Surface water is almost always heavily contaminated, resulting in death and disease.

Continue reading… “Solution for Haiti – HydroWell Village – Produces Clean Water From Virtually Any Water Source”

0