Numerical simulation of salt water passing Mechanism through Nano porous single-layer graphene membrane
Paper ID : 1319-MST2015-FULL
Authors:
1Alireza Chogani, 2Ali Moosavi *, 2Mohammad Rahiminejad
1Tehran, Sharif university of Technology, Department of Mechanical Engineering
2Tehran, Sharif University of Technology, Department of Mechanical Engineering
Abstract:
In recent years carbon nanotubes and other carbon nanostructures such as graphene sheets have attracted a lot of attention due to their unique mechanical, thermal and electrical properties. These structures can be used in desalination of sea water, removal of hazardous substances from water tanks, gases separation, and etc. The nano porous single layer graphene membranes, due to their very low thickness are very convenient and efficient for desalinating water. In this method, water-flow thorough the membrane and salt rejection strongly depends on the applied pressure and size of nano holes, that have been created in graphene membrane.
In this study, the mechanism of passing water and salt ions through nano porous single-layer graphene membrane is simulated using classical molecular dynamics. In the simulation, in order to separate salt ions from the water, effect of applied pressure and size of the nano holes are investigated. The results show that by increasing the pressure and diameter of the nano holes, water-flow through membrane increases, meanwhile salt rejection decreases.
Keywords:
Nanoporous Geraphene, Desalination, Molecular Dynamics
Status : Paper Accepted (Oral Presentation)