A team of investigators at Aveiro university have discovered that banana skins are excellent filters when it comes to cleaning waters contaminated by heavy metals. They apparently are particularly efficient when it comes to capturing mercury.
They claim that to treat 100 litres of contaminated water, rendering it fit for human consumption, all that is required is some scientific know-how and is 291 grams of banana skin.
The Aveiro team, led by Elaine Fabre, is excited. They claim their discovery could revolutionise the way waste waters are treated on a wide scale. All that’s needed is for banana skins to be left in contact with contaminated water “for a certain period of time”. In a process called sorption, the cellulose, lignin and hemicellulose in peel gradually cleanses water by devouring its toxins.
Portugalresident.com quoted Fabre as saying: “The results show a very promising potential in the application of banana skins in everyday systems.”