Journal of radiological science and technology (대한방사선기술학회지:방사선기술과학)

Korean Society of Radiological Science (대한방사선과학회)
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Radon Removal Efficiency of Activated Carbon Filter from Coconut

코코넛 기반 활성탄 필터의 라돈 제거 효율

  • Yun-Jin Ahn (Radiation Safety Section, Korea Institute of Radiological and Medical Sciences) ;
  • Gi-Sub Kim (Radiation Safety Section, Korea Institute of Radiological and Medical Sciences) ;
  • Tae-Hwan Kim (Radiation Safety Section, Korea Institute of Radiological and Medical Sciences) ;
  • Sang-Rok Kim (Radiation Safety Section, Korea Institute of Radiological and Medical Sciences)
  • 안윤진 (한국원자력의학원 방사선안전관리팀) ;
  • 김기섭 (한국원자력의학원 방사선안전관리팀) ;
  • 김태환 (한국원자력의학원 방사선안전관리팀) ;
  • 김상록 (한국원자력의학원 방사선안전관리팀)
  • Received : 2023.03.28
  • Accepted : 2023.04.06
  • Published : 2023.04.30
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Abstract

The Korea Institute of Radiological and Medical Sciences plans to produce 225Ac, a therapeutic radio-pharmaceutical for precision oncology, such as prostate cancer. Radon, a radioactive gas, is generated by radium, the target material for producing 225Ac. The radon concentration is expected to be about 2000 Bq·m-3. High-concentration radon-generating facilities must meet radioactive isotope emission standards by lowering the radon concentration. However, most existing studies concerning radon removal using activated carbon filters measured radon levels at concentrations lower than 1000 Bq·m-3. This study measured 222Rn removal of coconut-based activated carbon filter under a high radon concentration of about 2000 Bq·m-3. The 222Rn removal efficiency of activated carbon impregnated with triethylenediamine was also measured. As a result, the 222Rn removal amount of the activated carbon filter showed sufficient removal efficiency in a 222Rn concentration environment of about 2000 Bq·m-3. In addition, despite an expectation of low radon reduction efficiency of Triethylenediamine-impregnated activated carbon, it was difficult to confirm a significant difference in the results. Therefore, it is considered that activated carbon can be used as a radioisotope exhaust filter regardless of whether or not Triethylenediamine is impregnated. The results of this study are expected to be used as primary data when building an air purification system for radiation safety management in facilities with radon concentrations of about 2000 Bq·m-3.

Keywords

Acknowledgement

This study was supported by a grant of the Korea Institute of Radiological and Medical Sciences(KIRAMS), funded by Ministry of Science and ICT(MSIT), Republic of Korea. (No. 50422-2023)

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