Wednesday, March 23, 2011

Slip a Banana Peel in Your Drink For Purity

Brazilian researchers have found an unexpected helper in the struggle against contaminated drinking water: Bananas. In a new study, minced banana peels were able to bind and accumulate trace amounts of lead and copper in river water, making the toxic metals 20 times easier to detect with crude equipment. Banana peels can't actually be used to remove metals from water or to clean up contamination, said Ashok Gadgil, an environmental engineer at the University of California, Berkeley. Instead, their value lies in their ability to gather together trace amounts of copper and lead and make the metals easier to detect. More>