Sorbents for Treatment of Water Vapor-Air Flows to Remove Volatile Organic Compounds of Radioactive Iodine

摘要

Sorption of CH_(3)~(131)I from water vapor-air medium on Fizkhimin and Siloksid inorganic sorbents and on SKT-3I activated carbon was studied. The sorption power of Fizkhimin, Siloksid, and SKT-3I sorbents toward CH_(3)~(131)I was examined (1) after their 20-h contract with water, followed by removal of the liquid phase and drying at 110 deg C; (2) after 4-h treatment with steam (95-98 deg C), followed by drying at 25 deg C; (3) after keeping for 9 months in 100percent humid air at ambient temperature of 10 to 45 deg C; and (4) after treatment with a water vapor-air flow (95-98 deg C, 60-80 vol percent water vapor) for 2 h. In most cases, Fizkhimin sorbent and SKT-3I activated carbon preserve high sorption efficiency toward CH_(3)~(131)I from water vapor-air flow.