Banana peel can purify heavy metal pollution in water

Bananas are delicious and nutritious, but most people may not know that the seemingly "worthless" banana skin also contains some magical functions, such as maintaining leather goods, polishing silverware, etc In addition, banana peel can also absorb heavy metal pollutants in water Researchers at the University of Sao Paulo in Brazil have found that chopped banana peel can effectively remove harmful heavy metals such as copper and lead from drinking water Even after 11 times of continuous use, the water purification equipment made of banana peel still has significant characteristics of absorbing heavy metal pollution The researchers believe that banana peel can play an important role in the field of water purification, because compared with the current purification method, this method is not only environmentally friendly and cheap, but also has better durability Affected by the pollution of mining and metallurgy industry, industry and agriculture, the content of heavy metals in drinking water in many areas exceeds the standard, seriously endangering human health In the past, chemical methods were often used to deal with heavy metal pollution, that is, adding chemicals to the water to react with heavy metals, but this method is not only costly, but also harmful to the chemicals used Therefore, it is a difficult problem to develop a cheap and efficient water purification method In addition to banana peel, previous studies have shown that coconut fiber, peanut shell and other plant wastes can also be used as good water purification materials, the researchers reported in the journal industrial and Engineering Chemistry Research of the American Chemical Society.