Purify waste water with oil
Can oil be the best ally of water? Water and oil, yes you know ... they don't get along. Just take a glass of water and add a few drops of oil to notice that these are two immiscible substances; the oil, after a while, will settle on the surface of the water. When it comes to water pollution, there are many undisputed protagonists, however, a simple chemical trick could clean up the world's wastewater thanks to an oil.