Adsorption of pernuorooctane sulfonate on Fe3O4 magnetic nanoparticles
Fe3O4纳米磁性微粒对全氟辛烷磺酸盐的吸附

The adsorption of Fe3O4 nano-magnetic particles on PFOS was studied.In the experiment,Fe3O4 nano-magnetic particles synthesized by coprecipitation were monitored in terms of their sizes,morphologies and magnetic properties through TEM,XRD and VSM,respectively.The results indicate that the optimal conditions are the initial concentration of PFOS 4 mg/L,pH=3,reaction time of 24 h,Fe3O4 nano-magnetic particles dosage of 1.25 g/L,the removal rate of PFOS amounts to 90%.The adsorption of Fe3O4 nano-magnetic particles on PFOS is consistent with Freundlich equation.