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 deabsorbed 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.