Researchers from Washington University in St. Louis have proven that drinking can become any water, even polluted. To cleanse need three things: sunlight, air and graphene oxide.
Method is very simple. As it turned out, the filters graphene oxide possess extremely high efficiency. The main condition – the presence of direct sunlight in a place of purification of water.
Graphene is a substance composed of atoms of carbon, hydrogen and oxygen. In essence, graphene filter looks like an ordinary sheet of paper. Upon contact with water and sunlight it begins to change the composition of the water. As a result, all the impurities precipitate and are filtered out.
At the moment graphene filler is one of the fastest and simple technology of water purification. It is likely that the technology will be used in countries with a shortage of drinking water to the population had access to safe liquid.