The composite sorption material for radioiodine trapping from air stream and the method for its preparation

Обручиков, А. В.; Магомедбеков, Э. П.; Меркушкин, А. О.

doi:10.1007/s10967-020-07055-2

Cited by 5 publications

(2 citation statements)

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“…Activated charcoals may be used both in granular form and as components of composite materials that have lower hydraulic resistance at comparable treatment coefficient values. 4,5 Presently, function of decontamination of radioactive process gas blow-offs on NPP equipment in various operating conditions of power generating units from RNGs, aerosols, and radioactive iodine is performed by the noble gas delay system (NGDS). Main components of NGDS are self-cleaning filters, zeolite filters, and adsorption filters.…”

Section: Introductionmentioning

confidence: 99%

“…Activated charcoals of various activation levels and methods are the oldest, the most studied and effective, and comparatively inexpensive adsorbents for noble gases and volatile radioiodine forms. Activated charcoals may be used both in granular form and as components of composite materials that have lower hydraulic resistance at comparable treatment coefficient values. , …”

Section: Introductionmentioning

confidence: 99%

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Comparison of Adsorption Coefficients of Argon, Krypton, and Xenon on Various Activated Charcoal Grades in Static Conditions

et al. 2022

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Coefficients of adsorption (Henry's constants) of noble gases (argon, krypton, xenon) on activated charcoal grades AG-3, VSK-5, SKT-3, NWC 12x40 in the temperature range of 15 °C to 80 °C were determined. Temperature dependence parameters of Henry's constants were determined with a calculation of isosteric adsorption heat values. The experimental data were used to calculate stationary operating conditions of a radiochromatographic column in NPP's noble gas delay system. Out of all the studied charcoals, the results show that coconut charcoals VSK-5 and NWC 12x40 have the highest decontamination factor to airflow purification from radioactive noble gases. They far outweigh sulfur−potassium activated peat charcoal SKT-3 used presently at most Russian nuclear power plants. Activated charcoal AG-3 does not ensure the decontamination level required. The results also show that the overall decontamination factor depends heavily on temperature. Precooling gas flow at the adsorber's input can considerably increase air decontamination factor from radioactive noble gases.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%