Journal of Porous Materials

, Volume 17, Issue 2, pp 153–161 | Cite as

Preparation of macroporous silica-based crown ether materials for strontium separation

  • Anyun Zhang
  • Chengliang Xiao
  • Yunhai Liu
  • Qihui Hu
  • Chunmei Chen
  • Etsushu Kuraoka
Article
First Online:
Received:
Accepted:

Abstract

To develop a separation process of Sr(II), a macroporous silica-based 4,4′,(5′)-di(tert-butylcyclohexano)-18-crown-6 (DtBuCH18C6) polymeric material, (DtBuCH18C6+Oct)/SiO2-P, was synthesized by impregnating and immobilizing DtBuCH18C6 and 1-octanol into the pores of the macroporous SiO2-P particles support. DtBuCH18C6 was modified with 1-octanol through hydrogen bonding. The adsorption of simulant elements of some typical fission products Ru(III), Pd(II), Ba(II), Mo(VI), La(III), Y(III), Sr(II), Cs(I) and those of non-fission products Na(I) and K(I) onto (DtBuCH18C6+Oct)/SiO2-P were studied at 298 K. The effects of the HNO3 concentration in a range of 0.1–5.0 M and contact time on the adsorption were investigated. (DtBuCH18C6+Oct)/SiO2-P showed excellent adsorption ability and high selectivity for Sr(II) over all of the tested metals except Ba(II). Partitioning of Sr(II) from a 2.0 M HNO3 solution containing ~5.0 × 10−3 M of the tested metals was conducted utilizing (DtBuCH18C6+Oct)/SiO2-P packed column. Pd(II), Mo(VI), Y(III), La(III), Ru(III), K(I), Cs(I), and Na(I) showed no adsorption and flowed into effluent along with 2.0 M HNO3. Sr(II) was retained on (DtBuCH18C6+Oct)/SiO2-P and was eluted effectively by H2O, while Ba(II) showed similar elution behavior. The bleeding of total organic carbon leaked from (DtBuCH18C6+Oct)/SiO2-P was evaluated. It was demonstrated that the macroporous silica-based (DtBuCH18C6+Oct)/SiO2-P materials are promising in separation of Sr(II) from high level radioactive waste.

Keywords

Macroporous materials Silica-based support Crown ether Strontium Adsorption Separation 
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Notes

Acknowledgments

The Project Sponsored by the Specialized Research Fund for the Doctoral Program of Higher Education under contract No. 20070335183, the National Natural Science Foundation of China under contract No. 20671081, the Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry [2008]101, the Qianjiang Talent Program under contract No. 2006R10005, the Zhejiang Provincial Natural Science Foundation of China under contract No. Y406022, and the Sci-Tech Academy of Zhejiang University. The authors wish to think Dr. Ludek Jelinek at Institute of Chemical Technology for his assistance and support.

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Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  • Anyun Zhang
    • 1
  • Chengliang Xiao
    • 1
  • Yunhai Liu
    • 1
  • Qihui Hu
    • 1
  • Chunmei Chen
    • 1
  • Etsushu Kuraoka
    • 2
  1. 1.College of Materials Science and Chemical EngineeringZhejiang UniversityHangzhouPeople’s Republic of China
  2. 2.Cyclotron and Radioisotope Center (CYRIC)Tohoku UniversitySendaiJapan

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