ABSTRACT
ABSTRACT: Polycyclic aromatic hydrocarbons (PAHs), which have a disrupting effects on human’s health, are increasingly noticed in aquatic environment. And it is essential to find an efficient way to remove them. By contrast, nanofiltration technology is a better way than traditional methods. This paper offered a study on the impact of ionic strength and pH on the PAHs (naphthalene, phenanthrene and fluoranthene) removal by nanofiltration membrane. The results indicated that there was a higher flux by BDXN-70 nanofiltration membrane than by BDXN-90 and PAHs rejections were relatively efficiency for BDXN-70 membrane. The water background inorganic matter (pH and ionic strength) effected water flux and PAHs rejections. The trace PAHs could be efficiently rejected (rejections were more than 95%) by nanofiltration membrane stability at acidic solutions. There was little influence of rejection on different ionic strength except naphthalene. The lowest rejection of naphthalene in different ionic strength was 86%.
