Journal of Radiation Research and Radiation Proces ›› 2018, Vol. 36 ›› Issue (6): 60301-060301.doi: 10.11889/j.1000-3436.2018.rrj.36.060301

• RADIATION CHEMISTRY • Previous Articles     Next Articles

Synthesis of magnetic zeolite and its adsorption capability for Cs ions

CHEN Wei, HE Ying, SHEN Xianrong, JIANG Dingwen, WANG Qingrong   

  1. Naval Medical Research Institute, The Second Military Medical University, Shanghai 200433, China
  • Received:2018-08-25 Revised:2018-11-27 Online:2018-12-20 Published:2018-12-21
  • Supported by:

    Supported by Natural Science Foundation of Shanghai (16ZR1414200)

Abstract:

Magnetic zeolite was prepared by combining modified zeolite with Fe3O4 by a physical adhesion process based on magnetic carrier technology. The composition of the resulting material was determined by X-ray diffraction, scanning electron microscopy, and magnetization measurements. The adsorption capacity of the magnetic zeolite for Cs ions and the magnetic recovery rate were also studied. The results showed that the Fe3O4 particles adhered to the magnetic zeolite surface or aggregated to one another, forming magnetic particulates. As opposed to the case of Na-zeolite, there was no change in the structure of the magnetic zeolite. The removal rate of Cs ions from the magnetic zeolite increased rapidly with an increase in the adsorption time, after 240 min, increased slowly. After 16 h, the Cs ion adsorption reached the maximum value. The maximum adsorption capacity for Cs ions reached 78 mg/g, and the saturation magnetization of the magnetic zeolite was measured to be 23.773 emu/g. The magnetic recovery rate reached 99.2%, which facilitated magnetic separation of the sample after the adsorption process. The magnetic zeolite prepared in this study has potential application for the removal of Cs ions from wastewater.

Key words: Magnetic zeolite, Cs ions, Adsorption

CLC Number: 

  • TL13