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×÷ÕߣºEvelyn N. Wang         & Rohit Karnik
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Graphene promises water desalination at throughputs much higher than state-of-the-art membranes.State-of-the-art polymeric reverse osmosis membranes rely on the solution-diffusion mechanism, in which water molecules are selectively absorbed into a thin layer at the surface of the membrane and then diffuse across to the other side. Polymeric membranes offer excellent salt rejection, but the diffusive transport of water through the disordered polymer is slow.

Water desalination_ Graphene cleans up water.jpg
Figure 1 | A graphene membrane with subnanometre pores is a promising reverse osmosis membrane[ Last edited by haldea on 2012-9-24 at 09:35 ]
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