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The freshwater crisis is a growing concern and a pressing problem for theworld because of the increasing population, civilization, and rapid industrialgrowth. The water treatment facilities are able to supply less than 1% of thetotal water demand. Water desalination can be a potential solution to deal withthis alarming issue. Researchers have been exploring for quite some time tofind novel nano-enhanced membranes and manufacturing techniques to increase theefficiency of the desalination process. Graphene and graphene modifiedmembranes showed huge potential as desalination membranes for comparativelyeasier synthesis process and higher ion rejection rate than conventional filtermaterials. Currently, single-layer Mos$_2$ has been discovered to have the samepotential of water permeability and ion rejection rate as graphene membrane ina more energy-efficient way. For almost analogous nano porous structure of thegraphene membrane, almost 70% of the higher water flux is obtained from theMos$_2$ membrane. In this work, it has been shown that nano porous Mos$_2$membranes provide a promising result for desalinating other salts of seawateralongside NaCl. We have also observed the effect of variations in ions, poresize, and pressure on water permeation and ion rejection rates in the waterdesalination process. In this study, water permeation increased significantlyby increasing the pore area from 20{\AA} to 80{\AA}. The rate of waterfiltration increases in proportion to both applied pressure and pore size,sacrificing the ion rejection rate for the type of ions studied. A combinationof salt ions in the saline water for desalination has also been studied, wherethe rejection rates for the different ions are separately represented forvarious applied pressures. For seawater, the Mos$_2$ membrane has showed quitepromising performance in the study of ion variation.

Desalination Performance of Nano porous Mos$_2$ Membrane on Different Salts of Saline Water: A Molecular Dynamics Study