| Contaminated water (8) |  |
| Desalination (26) | |
| Ocean acidification (1) | |
| Water pollution (1) | |
| Water scarcity (4) | |
| Contaminated water (8) | |
| Desalination (26) | |
| Ocean acidification (1) | |
| Water pollution (1) | |
| Water scarcity (4) | |
the Refresh approach is more cost effective than using tanker ships where fresh water is priced around EUR 14/m3 or huge infrastructures, such as pipelines or desalination plants.
#Desalination with nanoporous graphene membrane Less than 1 percent of Earth's water is drinkable. Removing salt and other minerals from our biggest available source of water--seawater--may help satisfy a growing global population thirsty for fresh water for drinking, farming, transportation, heating, cooling and industry.
But desalination is an energy-intensive process, which concerns those wanting to expand its application.
Now, a team of experimentalists led by the Department of energy's Oak ridge National Laboratory has demonstrated an energy-efficient desalination technology that uses a porous membrane made of strong, slim graphene--a carbon honeycomb one atom thick.
The results are published in the March 23 advance online issue of Nature Nanotechnology("Water Desalination Using Nanoporous Single-layer graphene"."
To figure out the best pore size for desalination, the researchers relied on the Center for Nanophase Materials sciences (CNMS),
They determined the optimum pore size for effective desalination was 0. 5 to 1 nanometers,
They also found the optimal density of pores for desalination was one pore for every 100 square nanometers."
part of a competition to see who could create an affordable desalination solution for developing countries.
Using the sun instead of fossil fuels to power a desalination plant isn't a totally new idea.
Larger solar desalination plants are being investigated seriously in areas where water is becoming a scarce resource,
The MIT/Jain team and their competitors tested their projects at the Brackish Groundwater National Desalination Research Facility in New Mexico,
Developed by a team of researchers at Alexandria University in Egypt, the procedure uses a desalination technique called pervaporation to remove the salt from sea water
"It can effectively desalinate water with high concentration of salt like that of the Red sea, where desalination costs more and yields less."
#Safe drinking water Via Solar power Desalination Natasha Wright, an MIT Phd student in mechanical engineering, has designed a solar powered system that makes water safe to drink for rural, off-grid Indian villages.
Wright began designing an electrodialysis desalination system, which uses a difference in electric potential to pull salt out of water.
This type of desalination system has been around since the 1950s, but is used typically only municipally, to justify its costs.
While other companies are already installing desalination systems across India, their designs are intended to be powered grid.
She designed a village-scale desalination system that runs on solar power. Since her system is powered by the sun,
But some ranchers find that even their livestock won tolerate the saltiness of this water. t useful to install a small-scale desalination system where people are
#Solar desalination (Nanowerk News) When graduate student Natasha Wright began her Phd program in mechanical engineering, she had no idea how to remove salt from groundwater to make it more palatable,
Wright began designing an electrodialysis desalination system, which uses a difference in electric potential to pull salt out of water.
This type of desalination system has been around since the 1950s, but is used typically only municipally, to justify its costs.
While other companies are already installing desalination systems across India, their designs are intended to be powered grid.
Shes designed a village-scale desalination system that runs on solar power. Since her system is powered by the sun,
Its useful to install a small-scale desalination system where people are so spread out that its more costly to pump in water from a municipal plant,
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