Preparation of PAN-zeolite 4A composite ion exchanger and its uptake behavior for sr and cs ions in acid solution

Jei Kwon Moon, Chong Hun Jung, Eil Hee Lee, Hyung Tae Kim, Yong Gun Shul

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Abstract

A PAN-4A composite ion exchanger containing about 80% 4A powder was prepared to remove strontium and cesium ions from acidic solution. The SEM image of the fracture of composite bead showed that zeolite 4A powder was dispersed homogenously and the pores were well formed. The mean pore size of composite bead was 0.14 μm and its porosity was about 74%, which is much higher in comparison with the existing inorganic adsorbent beads. The acid and radiation stability tests showed that PAN-4A was stable against acid solution higher than pH 2 and radiation dose less than 1.89×108 rad, respectively. Ion exchange tests showed that the PAN-4A was selective for Sr ion. The distribution coefficients of PAN-4A for Sr and Cs ions at pH 2 were 2×104 mL/g and 280 mL/g, respectively. The ion exchange capacities (q) of PAN-4A for Sr and Cs ions at pH 2, which are modeled by Dubinin-Polanyi equation, were 3.92 meq/g and 2.47 meq/g, respectively.

Original languageEnglish
Pages (from-to)838-842
Number of pages5
JournalKorean Journal of Chemical Engineering
Volume19
Issue number5
DOIs
Publication statusPublished - 2002 Sep

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All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

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