Removal of cesium using cobalt-ferrocyanide-impregnated polymer-chain-grafted fibers

Ryo Ishihara, Kunio Fujiwara, Takato Harayama, Yusuke Okamura, Shoichiro Uchiyama, Mai Sugiyama, Taka Aki Someya, Wataru Amakai, Satoshi Umino, Tsubasa Ono, Aguru Nide, Yuya Hirayama, Tsukasa Baba, Takashi Kojima, Daisuke Umeno, Kyoichi Saito*, Shiho Asai, Takanobu Sugo

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

52 Citations (Scopus)


A novel fiber that can immobilize metal ferrocyanides for the removal of cesium ions using a commercially available 6-nylon fiber as a starting material was proposed. Precipitates of metal ferrocyanide (M-FC) were formed among the polymer chains grafted onto the 6-nylon fiber. 6-Nylon fiber of 40 μm diameter was used as the trunk polymer for grafting. Vinyl benzyl trimethylammonium chloride (VBTAC) and Sodium styrene sulfonate (SSS) were used without further purification. Cesium chloride was dissolved with seawater to yield a concentration of 10 mg-Cs/L. Nylon fiber or 6-nylon fiber was irradiated with an electron beam in nitrogen atmosphere at ambient temperature. After the fibers were immersed in a 1.0M NaCl aqueous solution and washed repeatedly with water, they were vacuum-dried. The results show that the uniform Fe or ferrocyanide distribution across the ferrocyanide-ion-bound VBTAC fiber corresponds to the uniform distribution of the poly-VBTAC chain grafted to the nylon fiber.

Original languageEnglish
Pages (from-to)1281-1284
Number of pages4
JournalJournal of Nuclear Science and Technology
Issue number10
Publication statusPublished - 2011
Externally publishedYes


  • 6-nylon fiber
  • Adsorbent
  • Cesium ion removal
  • Cobalt ferrocyanides
  • Radiation-induced graft polymerization

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering


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