Banana peels to remove toxic metals from water
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It was discovered that minced banana peels remove toxic metals from wastewater better than many of the leading chemical treatments. Banana peels are up to 20 percent more effective than other materials, and the same batch of peels can be used up to 11 times.
The peels are an attractive option as a water purifier because they don't have to be modified to work, and, coupled with their low cost, could be used in places little funding for water treatment.