MIT researchers have developed very fine filters able to purify and desalinate water more economically and environmentally sustainable compared to devices already in the marketplace. Existing desalination systems are formed by thick membranes that require a very high pressure to ensure the passage of water and, consequently, cause a very high expenditure of energy.


New graphene filters could be the solution to this problem.


The new filters designed by scientists at MIT are composed of graphene sheets with very small holes (just one nanometer). The ability to create holes so small is the secret of this discovery. Their size, in fact, is ideal to allow the flow of the water and, at the same time, to prevent the passage of the salt and other impurities.


This discovery opens the door to new methods of purification and desalination both energy-efficient and economically sustainable.


Article Source: MIT - Massachusetts Institute of Technology and Nano Letters

Image Source: Google