Separation of Kr and Xe by active carbon absorption method at low temperature

The absorption and separation method of Xe and Kr gas by active carbon was investigated. A standard mixture of Xe and Kr flowed through the active carbon column to be absorbed and enriched at low temperature (-78℃). The absorbed Xe and Kr were then de-absorbed from the carbon column separately. The analysis of the experimental data shows that the recoveries of Xe and Kr are greater than 90%. It can be concluded that the decontamination coefficient for Xe from Kr environment is above 10⁴, while the decontamination coefficient for Kr from Xe is no less than 10³. (authors)