Solar-Powered Proteins Filter Antibiotics from Water

ISLAMABAD, Apr 20 – A tiny solar-powered filter made of two bacterial proteins absorbs more than 50 percent more of the pollutants.

In addition, the filter – developed by a team at the University of Cincinnati – can release the captured antibiotics so they can be reused, Voice of America reported.

Antibiotics and chemicals enter waterways through sewage and run-off from yards and farms. They can breed resistant bacteria and kill helpful microorganisms, degrading the health of aquatic ecosystems.

The nano-filters, each smaller than the diameter of a human hair, employ a protein used by drug-resistant bacteria to excrete waste, but the researchers have turned it around so it sucks compounds in. Another protein, which responds to sunlight, provides the pumping power for the filter.

Environmental engineer David Wendell, one of the developers, calls the innovation an environmentally friendly and cost-effective way to extract and recover antibiotics from surface waters.

He foresees the possibility that, one day, a collection of nano-filters could be anchored downstream from urban or farming areas to capture harmful compounds in water.

Courtesy: DAWN
http://dawn.com/2013/04/20/solar-powered-proteins-filter-antibiotics-from-water/

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