화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.59, 416-424, March, 2018
DOI10.1016/j.jiec.2017.10.053  Export Citation
Rapid and highly selective removal of lead in simulated wastewater of rare-earth industry using diglycolamic-acid functionalized magnetic chitosan adsorbents
Ruixi Bai1, 2, Yang Zhang1, 2, †, Zhigang Zhao1, 2, Qiuxia Liao1, 2, Peng Chen1, 2, Panpan Zhao1, 2, Wanghuan Guo1, 2, Fan Yang1, 2, †, and Laichao Li3
  • 1CAS Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou, Fujian, 350002, China
  • 2Xiamen Institute of Rare Earth Materials, Haixi Institute, Chinese Academy of Sciences, No. 1300 Jimei Road, Jimei, Xiamen, Fujian, 361021, China
  • 3Fujian Changting Golden Dragon Rare-Earth Co., Ltd., China
E-mail:,
Rapid and highly selective magnetic core.shell adsorbents for Pb2+ removal from simulated wastewater of rare-earth industry were prepared by synthesizing chitosan-coated Fe3O4 (Fe@CS) beads and following chemical-grafting steps for the diglycolamic-acid group (DGA). The adsorbents had a highly selective ability for Pb2+ toward other metal ions, which attributed to the superior infinity between the DGA and Pb2+. The maximum adsorption capacity of Pb2+ was 70.57 mg/g. The R2 of the pseudo-second order kinetics was 0.99857, which indicated the adsorption process was controlled by chemical reactions. Moreover, diglycolamic-acid functionalized Fe@CS (Fe@CS-DGA) beads separated from water within 9 s under magnetic fields.
Keywords:Diglycolamic-acid;Lead;High selectivity;Fast removal;Magnetic chitosan beads
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