Banana peels has metal binding properties.
Banana peels were used as water filters.
It can be used 11 times.
https://www.sciencedaily.com/releases/2 ... 113030.htm
Banana Peel Applied to the Solid Phase Extraction of Copper and Lead from River Water: Preconcentration of Metal Ions with a Fruit Waste
Renata S. D. Castro, Laércio Caetano, Guilherme Ferreira, Pedro M. Padilha, Margarida J. Saeki, Luiz F. Zara, Marco Antonio U. Martines, Gustavo R. Castro. Banana Peel Applied to the Solid Phase Extraction of Copper and Lead from River Water: Preconcentration of Metal Ions with a Fruit Waste. Industrial & Engineering Chemistry Research, 2011; 110216180259021 DOI: 10.1021/ie101499e
http://pubs.acs.org/doi/abs/10.1021/ie101499e
Use Orange Peels for water filtration:
Orange peels can be used to remove acidic dyes.
https://www.sciencedaily.com/releases/2 ... 093500.htm