Journal of Radiation Industry (방사선산업학회지)

Korean Society of Radiation Industry (한국방사선산업학회)
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A Study of Cesium Removal Using Prussian Blue-Alginate Beads

프러시안 블루-알지네이트 비드를 이용한 세슘 제거 연구

  • So-on Park (Decommissioning Technology Research Division, Korea Atomic Energy Research Institute) ;
  • Su-jung Min (Decommissioning Technology Research Division, Korea Atomic Energy Research Institute) ;
  • Bum-kyoung Seo (Decommissioning Technology Research Division, Korea Atomic Energy Research Institute) ;
  • Chang-hyun Roh (Decommissioning Technology Research Division, Korea Atomic Energy Research Institute) ;
  • Sang-bum Hong (Decommissioning Technology Research Division, Korea Atomic Energy Research Institute)
  • 박소언 (한국원자력연구원 해체기술개발부) ;
  • 민수정 (한국원자력연구원 해체기술개발부) ;
  • 서범경 (한국원자력연구원 해체기술개발부) ;
  • 노창현 (한국원자력연구원 해체기술개발부) ;
  • 홍상범 (한국원자력연구원 해체기술개발부)
  • Received : 2024.02.13
  • Accepted : 2024.03.26
  • Published : 2024.03.31
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Abstract

Accidents at nuclear facilities and nuclear power plants led to leaks of large amounts of radioactive substances. Of the various radioactive nuclides released, 137Cs are radioactive substances generated during the fission of uranium. Therefore, due to the high fission yield (6.09%), strong gamma rays, and a relatively long half-life (30 years), a rapid and efficient removal method and a study of adsorbents are needed. Accordingly, an adsorbent was prepared using Prussian blue (PB), a material that selectively adsorbs radioactive cesium. As a result of evaluating the adsorption performance with the prepared adsorbent, it was confirmed that 82% of the removal efficiency was obtained, and most of the cesium was rapidly adsorbed within 10 to 15 minutes. The purpose of this study was to adsorb cesium using the Prussian blue alginate bead and to compare the change in detection efficiency according to the amount of adsorbent added for quantitative evaluation. However, in this case, it is difficult to determine the detection efficiency using a standard source with the same conditions as the measurement sample, so the efficiency change of the HPGe detector according to the different heights of Prussian blue was calculated through MCNP simulation using certified standard materials (1 L, Marinelli beaker) for radioactivity measurement. It is expected to derive a relational equation that can calculate detection efficiency through an efficiency curve according to the volume of Prussian blue, quantitatively evaluate the activity at the same time as the adsorption of radioactive nuclides in actual contaminated water and use it in the field of nuclear facility operation and dismantling in the future.

Keywords

Acknowledgement

본 연구는 정부(과학기술정보통신부)의 재원으로 한국연구재단(NRF)의 지원을 받아 수행(RS-2023-0024961) 되었습니다.

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