Journal of Radioanalytical and Nuclear Chemistry

, Volume 314, Issue 2, pp 1039–1050 | Cite as

Sorption of uranium(VI) by La-Al-carboxymethyl konjac glucomannan microsphere sorbent



The microsphere of carboxymethyl konjac glucomannan immobilizing La3+ and Al3+ (CMKGM-La-Al) has been explored for sorption of U(VI). The maximum U(VI) sorption capacity of the microsphere is found to be 45.4 mg g−1 at pH 5. Experimental data are fitted well with the linear Langmuir and linear pseudo-first-order kinetic model. The sorption process is endothermic, spontaneous and favorable. The possible mechanism of CMKGM modification and sorption of U(VI) on CMKGM-La-Al involves ion exchange and coordination reaction. The comparison between CMKGM-La-Al and other sorbents suggests that CMKGM-La-Al can be considered as an effective sorbent for U(VI) sorption.


Carboxymethyl konjac glucomannan La3+ Al3+ Sorption U(VI) 



This work is financially supported by the special project of nuclear energy development (13zg610301) and Longshan academic talent research support plan of Southwest University of Science and Technology (17LZX302). Analytical facilities are mainly provided by Engineering Research Center for Biomass Materials, Ministry of Education.


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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2017

Authors and Affiliations

  • Siyao Sun
    • 1
  • Xiaoyan Lin
    • 1
    • 2
  • Liping Wu
    • 1
  • Xuegang Luo
    • 2
  1. 1.School of Materials Science and EngineeringSouthwest University of Science and TechnologyMianyangChina
  2. 2.Engineering Research Center of Biomass Materials, Ministry of EducationMianyangChina

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