Abstract
Water shortage due to rising populations and economic development become a serious problem around the world in the 21st century. For this problem, reverse osmosis membrane method is useful technology to secure water resource. This method has a problem that separation performance falls with operating time due to fouling and concentration polarization in the vicinity of the membrane surface. In this study, we conducted molecular dynamics simulation on the behaviors of water molecules and salt ions to investigate the effects of interaction force on the diffusion (water molecules and salt ions) and the permeation. The results show that the strong interaction force decrease the diffusion coefficient of water molecules and increase the permeation of water molecules.
