Abstract
Water scarcity is a serious problem around the world in the 21st century. Reverse osmosis (RO) which is a technology that uses a semipermeable membrane is used to remove ions from sea water. However, this method has a problem that separation performance falls gradually with the operating time due to fouling and concentration polarization at the membrane surface. In this study, molecular dynamics simulations were carried out to investigate the effects of interaction force between solid and liquid on the diffusion of water molecules near the solid surface. The results show that the strong interaction force decreases the diffusion coefficient of water molecules in the vicinity of the solid surface, and there is a strong correlation between the diffusion coefficient of water molecules and the contact angle of water on the solid surface.
