Chemical & Sunlight Destroys Pollutants


Researchers at the U.K.'s University of Nottingham have found an inexpensive, harmless chemical combined with sunlight can destroy micro-pollutants. The system breaks down pollution molecules into carbon dioxide and water and could be an environmentally friendly way to clean fresh water supplies and industrial wastewater, the researchers say.

The team is developing a "fountain photo-catalytic reactor" to treat contaminated water using titanium dioxide.

Contaminated water is pumped through a specially designed nozzle and titanium dioxide is added. The nozzle produces an umbrella-shaped fountain spray and sunlight or artificial ultraviolet light falls on it. A photo-catalyst absorbs the solar radiation, destroying the pollutants, after which the titanium dioxide can be recovered and reused.

UPI, 10/02

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