Cesium removal in freshwater using potassium cobalt hexacyanoferrate-impregnated fibers

Y. Okamura, K. Fujiwara, R. Ishihara, T. Sugo, T. Kojima, D. Umeno, K. Saito*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

43 Citations (Scopus)


Potassium cobalt hexacyanoferrate compounds (KCo-HCFe's) were impregnated onto a 6-nylon fiber by radiation-induced graft polymerization and subsequent chemical modifications. First, dimethylaminoethyl methacrylate was graft-polymerized onto the nylon fiber. Second, hexacyanoferrate ions were bound to graft chains via an anion-exchange interaction. Third, KCo-HCFe's were formed on the nylon fiber via the precipitation reaction of hexacyanoferrate ions with cobalt ions in the presence of potassium chloride. The resulting KCo-HCFe-impregnated fiber had an impregnation percentage of the fiber for KCo-HCFe's of 7%. The cesium concentration in 10. ppm cesium chloride solution with the immersion of this fiber decreased to 0.6. ppm within 60. min at a ratio of liquid volume (10. mL) to fiber mass (0.1. g). The fiber was fabricated into a braid with a length of 100. cm and a diameter of 8. cm for practical use at sites contaminated with cesium.

Original languageEnglish
Pages (from-to)119-122
Number of pages4
JournalRadiation Physics and Chemistry
Issue number1
Publication statusPublished - 2014 Jan
Externally publishedYes


  • 6-Nylon
  • Adsorbents
  • Cesium removal
  • Impregnation
  • Potassium cobalt hexacyanoferrate
  • Radiation-induced graft-polymerization

ASJC Scopus subject areas

  • Radiation


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