文献类型：期刊文献

英文题名：Impact of key geochemical parameters on the attenuation of Pb(II) from water using a novel magnetic nanocomposite: fulvic acid-coated magnetite nanoparticles

作者：Fu, Qingchun[1];Hu, Baowei[2];Zhou, Xiaode[1];Hu, Qingyuan[2];Sheng, Jiang[3]

机构：[1]Xian Univ Technol, Inst Water Resources & Hydroelect Engn, Xian 710048, Peoples R China;[2]Shaoxing Univ, Coll Yuanpei, Sch Life Sci, Key Lab Clean Dyeing & Finishing Technol Zhejiang, Huancheng West Rd 508, Shaoxing 312000, Peoples R China;[3]Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Zhejiang, Peoples R China

年份：2016

卷号：57

期号：54

起止页码：26063

外文期刊名：DESALINATION AND WATER TREATMENT

收录：SCI-EXPANDED(收录号：WOS:000386649300017)、、Scopus(收录号：2-s2.0-84961197016)、WOS

基金：Financial supports from department of Science and Technology, Zhejiang province (2010C33101), financial supports from the National Natural Science Foundation of China (90610030) are acknowledged.

语种：英文

外文关键词：Fulvic acid; Magnetite; Coated; Attenuation; Geochemical parameters

外文摘要：In recent years, magnetic nanoparticles have been widely utilized as promising adsorbents for fast and effective attenuation of metal ions in water in environmental pollution control. Herein, a novel magnetic nanocomposite, namely fulvic acid (FA)-coated Fe3O4 nanoparticles (Fe3O4/FA), was utilized for the attenuation of Pb(II) in water by an adsorption process. The results indicated that the coated FA reduced the surface oxidation and agglomeration of Fe3O4 particles and thus promoted the performance of Fe3O4/FA towards Pb(II) removal. The results indicate that Pb(II) adsorption on Fe3O4/FA obtained equilibrium in less than 2h. Besides, the adsorption of Pb(II) on Fe3O4/FA is strongly dependent on medium pH, and independent of ionic strength and the type of coexisted ions. So, inner-sphere surface complexation mainly controls Pb(II) uptake on Fe3O4/FA. The Fe3O4/FA also showed good regeneration property and separation convenience for the treatment of Pb(II). Besides, XPS is used to study the mechanism at a molecular level and to identify the species of Pb(II) on Fe3O4/FA. Results of this study showed that the magnetic Fe3O4/FA is a promising sequestrator for the attenuation and separation of heavy metal ions in water in environmental pollution cleanup.