  In this work the conduction of ion-water solution through two discrete
bundles of armchair carbon and silicon carbide nanotubes, as useful membranes
for water desalination, is studied. In order that studies on different types of
nanotubes be comparable, the chiral vectors of C and Si-C nanotubes are
selected as (7,7) and (5,5), respectively, so that a similar volume of fluid is
investigated flowing through two similar dimension membranes. Different
hydrostatic pressures are applied and the flow rates of water and ions are
calculated through molecular dynamics simulations. Consequently, according to
conductance of water per each nanotube, per nanosecond, it is perceived that at
lower pressures (below 150 MPa) the Si-C nanotubes seem to be more applicable,
while higher hydrostatic pressures make carbon nanotube membranes more suitable
for water desalination.
