Chitosan-based biosorbents: immobilization of metal hexacyanoferrates and application for removal of cesium radionuclide from aqueous solutions

  • Larisa Zemskova
  • Andrei EgorinEmail author
  • Eduard Tokar
  • Vladimir Ivanov
Original Paper: Sol-gel and hybrid materials for energy, environment and building applications


Composite M (M—Cu, Ni) potassium ferrocyanide chitosan-based materials were prepared via co-precipitation methods using chitosan as a matrix for adsorption of cesium from alkaline solutions. The materials were fabricated using a suspension or in situ formation of ferrocyanides of transition metals in a chitosan matrix with simultaneous chitosan deposition. The synthesis products were characterized by the methods of scanning electron microscopy with energy-dispersive analysis (SEM–EDX) and X-ray diffraction (XRD). In the process of sorption of radiocesium from alkaline solutions under static conditions, the stability of composite sorbents compared with the pristine powders of transition metal ferrocyanides was estimated. The boundary values of the pH and time, at which the destruction of the composite sorbent is observed, are determined. The stabilizing effect of chitosan on the resistance of Ni-K ferrocyanide (FCN) complexes in alkaline mineralized solutions has been shown on the example of Ni-K FCN/chitosan composite sorbents.


  • Composite sorption materials have been fabricated by the methods of co-precipitation of chitosan and hexacyanoferrates of transition metals (Ni and Cu).

  • The synthesis products were characterized by the methods of scanning electron microscopy with energy-dispersive analysis (SEM–EDX) and XRD.

  • Sorbents were tested for cesium removal from model mineralized alkaline solutions.


Organomineral composites Sorbent Chitosan Metal hexacyanoferrate Cesium Radionuclide 



The work was partially supported by the FEBRAS Program of Basic Research “Far East”, project no. 18–3–021.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Supplementary material

10971_2019_5019_MOESM1_ESM.docx (1.6 mb)
Supplementary Information


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© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Institute of Chemistry, Far Eastern BranchRussian Academy of SciencesVladivostokRussia
  2. 2.Far East Geological Institute, Far Eastern BranchRussian Academy of SciencesVladivostokRussia

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