Fe3O4纳米磁性微粒对全氟辛烷磺酸盐的吸附
Adsorption of pernuorooctane sulfonate on Fe3O4 magnetic nanoparticles
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摘要: 采用共沉淀法合成3纳米磁性颗粒,用透射电子显微镜(TEM)、X射线衍射仪(XRD)以及振动样品磁强计(VSM)对Fe3O4纳米磁性颗粒的粒径、形貌和磁性进行表征并研究Fe3O4纳米磁性微粒对全氟辛磺酸盐的吸附。结果表明:在PFOS初始浓度4 mg/L,pH为3,反应时间24 h,Fe3O4纳米磁性微粒投加量1.25 g/L,对全氟辛磺酸盐去除率达到90%,盐度对Fe3O4纳米磁性微粒吸附PFOS不产生影响。Fe3O4纳米磁性微粒对PFOS的吸附符合Freundlich吸附方程。
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关键词:
- Fe3O4纳米磁性微粒 /
- 全氟辛烷磺酸盐(PFOS) /
- 吸附
Abstract: 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%. In addition, salinity does not have an impact on the adsorption of Fe3O4 nano-magnetic particles on PFOS and its adsorption is consistent with Freundlich equation.-
Key words:
- Fe3O4 magnetic nanoparticles /
- pernuorooctane sulfonate(PFOS) /
- sorption
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