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Osmosis

ECOGIZMO

Process to clean wastewater also produces electricity and desalinates water

By Darren Quick

00:05 August 17, 2009 PDT

Penn State researchers, Bruce Logan, and Maha Mehanna, with the three-chambered microbial ...

Desalination plants generally employ one of two methods to produce clean water – reverse osmosis or electrodialysis. Unfortunately, both processes require large amounts of energy, but an international team of researchers has proven a process that cleans wastewater can also remove 90 percent of salt from brackish water or seawater while generating electricity. Read More

ECOGIZMO

The M3 mobile water desalination system cuts the cost of producing clean water

By Darren Quick

04:57 July 15, 2009 PDT

Graduate student Alex Bartman works with the M3 water filtration and desalination system (...

Desalination is a popular source of potable water in Middle Eastern countries, where large energy reserves and the relative scarcity of water suitable for drinking led to desalination in the region accounting for close to 75% of total world capacity in 2007. If that figure hasn’t already dropped it almost certainly will as access to clean water becomes an issue for many places around the globe. And the shortage isn’t just limited to developing countries, with places like California and parts of Australia facing their worst droughts in recorded history. A new mini-mobile-modular (M3) “smart” water desalination and filtration system could help determine the feasibility of desalination in areas that may be considering it for the first time. Read More

ECOGIZMO

Salinity power as renewable energy

By Matt Kennedy

23:40 March 11, 2009 PDT

Where the river meets the sea - salt and freshwater could be used like a giant battery (Im...

Green energy comes in many guises these days, from wind-power to wave-power. One of the more compelling of the new kids on the eco-energy block is salinity power, which uses the concurrence of salt-water and freshwater in estuaries and marries it with the natural, effortless process of osmosis. Read More

 
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