Efficient water desalination using Bernoulli effect
TZ Wang and L Huang and JX Pei and XJ Hu and HF Jiang, DESALINATION AND WATER TREATMENT, 272, 37-49 (2022).
Due to the Bernoulli effect, the directional flow of water molecules on one side of the nanopore will produce a pressure drop compared with the fluid on the other side, which makes the water molecules on the static brine side be pumped through the slit with salt ions being blocked. A high water flux of 857 L/m2/h??bar with 100% salt rejection rate can be obtained in a single-layer graphene membrane with the slit of 0.7 nm under an external pressure of 250 MPa. This work provides a novel desalination method and a useful guideline for the future development of new pumping systems that separate ions or molecules.
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