Hybrid material made from magnetite nanoparticles sticks to contaminants and can be removed from water by a magnet. The technique can be adapted for use in removing synthetic dyes, drugs, hormones and pesticides.
A simple and affordable solution developed by researchers at the University of São Paulo and a Nigerian collaborator eliminates even multi-resistant bacteria. Clay, papaya seeds and banana peel are among the raw materials used by the group.
Water shortages cause economic losses for industry and agriculture, among other sectors, as well as damage human health, warns a report issued by the Brazilian Platform on Biodiversity and Ecosystem Services.
Reservoir cascade steadily improves water transparency by retaining matter in suspension that affects light absorption, as measured by a study conducted in Brazil.