Sorption of CH3131I from Steam-Gas Phase on Modified Ag-Containing Zeolites |
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Authors: | N B Mikheev A N Kamenskaya S A Kulyukhin I A Rumer V L Novichenko |
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Affiliation: | (1) Institute of Physical Chemistry, Russian Academy of Sciences, Moscow, Russia |
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Abstract: | Sorption of CH3
131I from the steam-gas phase on Ag-containing zeolites modified with acetylene was studied. The radioiodine adsorption in a column depends on the silver concentration in the sorbent, humidity of the steam-gas flow, and the temperature. The modified sorbents AgX-m containing 30-57% silver efficiently localize CH3I at the humidity up to 80% and sorption temperature from 120 to 195°C. Under these conditions the decontamination factor of a gas flow with respect to CH3
131I at 7.5-cm height of the sorbent bed and a 0.2 s gas-sorbent contact time exceeds 99.99%. The sorption properties of the modified Ag-containing sorbents are better that those of the nonmodified sorbents and known Ag-substituted zeolites. |
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