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General Chemistry ›› 2017, Vol. 3 ›› Issue (2): 134-139.DOI: 10.21127/yaoyigc20170003

Special Issue: Metal-Organic Frameworks

• Orginal Reports • Previous Articles    

Adsorptive Removal of Pb(II) Ions with Magnetic Metal-Organic Frameworks from Aqueous Samples

Haochi Liua, Feifei Lia, Ligang Chena*(), Jie Dingb*(), Mingli Suna   

  1. a Department of Chemistry, College of Science, Northeast Forestry University, Harbin, Heilongjiang 150040, China
    b State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin,Heilongjiang 150090, China
  • Received:2017-04-23 Accepted:2017-05-27 Online:2017-06-08 Published:2017-06-08
  • Contact: Ligang Chen, Jie Ding


In this study, we report the application of magnetic metal-organic frameworks as a novel adsorbent for fast removal of Pb(II) ions from aqueous solution in view of adsorption isotherms, kinetics, thermodynamics, desorption, and adsorbent regeneration. The adsorbent was characterized by PPMS, XRD, TEM and N2 adsorption/desorption measurement. The adsorption follows pseudo-second-order kinetics model and fits the Freundlich adsorption model with the adsorption capacity of 612 mg g–1 for Pb(II) ions. It is a spontaneous and endothermic process controlled by positive entropy change. The used Fe3O4/HKUST-1 could be regenerated effectively and recycled at least four times without significant loss of adsorption capacity.

Key words: metal-organic frameworks, lead, magnetic separation, adsorption removal, water treatment

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