Graphene Membrane Blocks More Salts

Apr-05-17 A graphene membrane able to separate even the smallest salts from seawater could offer a new way to harvest drinkable water.

Developed by a team at the University of Manchester, the membrane is an improvement over previous versions, which tended to swell when submerged—letting some salts slip through.

To ensure more salts are filtered out, the new membrane is physically confined, which limits how much it can swell when submerged and allows the pores to be fine-tuned. According to the team, the membrane is able to block up to 97 percent of sodium chloride ions, without drastically affecting the water flow. The membrane technology can also be scaled up or down, making it viable for a range of situations.

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[NEWATLAS.COM]
[MANCHESTER.AC.UK]

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