Add ‘cheap, effective water filter’ to the growing list of uses for banana peels. A recent report in the ACS’s journal Industrial & Engineering Chemistry Research says that using minced up banana peels is highly effective way to remove copper, lead and other heavy metals from water. Other methods of removing metals left behind from mining, farming and industrial waste can be expensive and often involve their own hazardous chemicals. The scientist’s work involved testing a number of plant waste materials as water filters including coconut fibers and peanuts shells. They found banana peels held some particular advantages:
The researchers found that minced banana peel could quickly remove lead and copper from river water as well as, or better than, many other materials. A purification apparatus made of banana peels can be used up to 11 times without losing its metal-binding properties, they note. The team adds that banana peels are very attractive as water purifiers because of their low cost and because they don’t have to be chemically modified in order to work.