Uptake and recovery of ruthenium by alginate gel polymers

Hitoshi Mimura, Hiroshi Ohta, Kenichi Akiba, Yoshio Onodera

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)

Abstract

The uptake and recovery of ruthenium ions were investigated by using alginate gel polymers. The uptake of RuNO3+ attained equilibrium within 2 d and the uptake percentage was above 90%. The distribution coefficient (Kd) of RuNO3+ for barium alginate (BaALG) tended to slightly decrease with increasing HNO3 concentration, while a relatively large Kd value of 52.0cm3/g was obtained even in the presence of 6.7 M HNO3, indicating a high affinity of BaALG for RuNO3+ ions. The separation factor of RuNO3+ and Rh3+ was 16.0 in the presence of 2.5 M HNO3. The Ru ions were uniformly dispersed throughout the gel particle and the maximum uptake capacity was estimated to be 1.30 mmol/g. The RuNO3+ ions were effectively adsorbed on the packed column of BaALG and eluted with concentrated HNO3 solution.

Original languageEnglish
Pages (from-to)655-660
Number of pages6
Journaljournal of nuclear science and technology
Volume39
Issue number6
DOIs
Publication statusPublished - 2002 Jun

Keywords

  • Alginates
  • Biopolymer
  • Breakthrough curve
  • Chromatography
  • Distribution coefficient
  • Elution
  • Isotherms
  • Maximum uptake capacity
  • Nitric acid
  • Ph value
  • Recovery
  • Rhodium
  • Ruthenium
  • Separation factor
  • Separation processes
  • Uptake

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering

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