Nuclear Engineering and Technology

  • 제52권11호
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  • Pages.2652-2659
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  • 2020
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  • 1738-5733(pISSN)
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  • 2234-358X(eISSN)
한국원자력학회 (Korean Nuclear Society)
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Performance evaluation of TEDA impregnated activated carbon under long term operation simulated NPP operating condition

  • 투고 : 2019.08.14
  • 심사 : 2020.04.20
  • 발행 : 2020.11.25
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초록

The methyl iodide (CH3I) removal performance of tri-ethylene-di-amine impregnated activated carbon (TEDA-AC) used in the air cleaning unit of nuclear power plants (NPPs) should be maintained at least 99% between 24 month-performance test period. In order for evaluating the effectiveness of TEDA-AC on the removal performance of CH3I in nuclear power plant during the operation of NPPs, the long-term test for up to 15 months was carried out under the simulated operating conditions (e.g., 25 ℃, RH 50%, ppb level poisoning gases injection) at nuclear power plants (NPPs). The TEDA-AC samples were analyzed with the Brunauer-Emmett-Teller (BET) specific surface area and TEDA content as well as CH3I penetration test. It is clearly evident that more than 99% of CH3I removal performance of TEDA-AC was observed in the TEDA-AC samples during 15 months of long-term operation under the simulated NPP operating conditions including the ppb level of organic and oxide form of poisoning gases. BET specific surface area and TEDA content that can affect the CH3I removal performance of TEDA-AC were also maintained as those in new TEDA-AC during 15 months of long-term operation.

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참고문헌

  1. M. Nakayama, K. Taira, M. Ohki, S. Sasaki, Effects of Weathering on Impregnated Charcoal Removal Efficiency for Radioactive Methyl Iodide, 28th Nuclear Air Cleaning and Treatment Conference, Albuquerque, 2004.
  2. V.R. Deitz, Effects of Weathering on Impregnated Charcoal Performance, NUREG-CR-2112, Naval Research Lab, 1981. NRL- MR-4516.
  3. V.R. Deitz, Pre-accident Weathering of Impregnated Carbons for Iodine Removal, 1981, 16th DOE nuclear air cleaning conference. 487.
  4. H. Deuber, Influence of Aging on the Retention of Elemental Radioiodine by Deep Bed Carbon Filters under Accident Conditions, 18th DOE nuclear airborne waste management and air cleaning conference, 1985.
  5. ASTM, Standard Test Method for Nuclear-Grade Activated Carbon, ASTM D3803-91. 2014.
  6. M.H. Kepic, Nuclear Air and Gas Treatment, 2010.
  7. S. Brunauer, P.H. Emmett, E. Teller, Adsorption of gases in multimolecular layer, J. Am. Chem. Soc. 60 (1938) 309. https://doi.org/10.1021/ja01269a023
  8. G. Horvath, K. Kawazoe, Method for the calculation of effective pore size distribution in molecular sieve carbon, J. Chem. Eng. Jpn. 16 (1983) 470. https://doi.org/10.1252/jcej.16.470
  9. Elliott P. Barrett, Leslie G. Joyner, Paul P. Halenda, The determination of pore volume and area distributions in porous substances. I. Computations from nitrogen isotherms, J. Am. Chem. Soc. 73 (1951) 373. https://doi.org/10.1021/ja01145a126
  10. D. Ruthven, Principles of Adsorption and Adsorption Processes, John Wiley & Sons, New York, U.S.A., 1984.
  11. S.W. Park, H.S. Park, W.K. Lee, H. Moon, Effect of water vapor on adsorption of methyl iodide to triethylenediamine-impregnated activated carbons, Sep.Sci.Technol. 5 (1995) 35. https://doi.org/10.1016/0956-9618(94)00104-Z
  12. H.K. Lee, K.I. Park, Adsorption characteristics of elemental iodine and methyl iodide on base and TEDA impregnated carbon, J. Kor.Nucl. Soc 28 (1995) 44.
  13. K. Hoa, S. Moon, H.C. Lee, Y.K. Hwang, C.-H. Lee, Adsorptive removal of gaseous methyl iodide by triethylenediamine (TEDA)-metal impregnated activated carbons under humid conditions, J. Hazard Mater. 368 (2019) 550. https://doi.org/10.1016/j.jhazmat.2019.01.078
  14. E. Aneheima, D. Berninb, M.R. Foreman, Affinity of charcoals for different forms of radioactive organic iodine, Nucl. Eng. Des. 328 (2018) 228. https://doi.org/10.1016/j.nucengdes.2018.01.007