Removal of I- and IO3- from Aqueous Solution

활성알루미나를 이용하여 방사성 폐수 중 I-와 IO3-를 제거하는 방법

  • Lim, Heon-Sung (Chemical Analysis Center, Korea Research Institute of Chemical Technology) ;
  • Lee, Sueg-Geun (Chemical Analysis Center, Korea Research Institute of Chemical Technology)
  • 임헌성 (한국화학연구원 화학분석센터) ;
  • 이석근 (한국화학연구원 화학분석센터)
  • Received : 2009.08.11
  • Accepted : 2009.10.23
  • Published : 2009.12.25

Abstract

$^{129}I$ is especially one of the most harmful radioactive elements because of its long half-life ($t_{1/2}$=$1.7{\times}10^7$ yr). The efficient removal of iodide ($I^-$) and iodate (${IO_3}^-$) in a aqueous solution by adsorption using activated alumina and activated carbon was studied. The removal efficiency was over 99% for iodide ion with silver treated basic alumina and iodate ion with acidic alumina or silver treated acidic alumina without any chemical addition or physical treatments.

Keywords

iodine;iodide;iodate;radioisotope;radioactive;activated alumina

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