Adsorption and desorption characteristics of methyl iodide at high temperature conditions up to 250℃ by TEDA-impregnated activated carbon, which is used for radioiodine retention in nuclear facility, was experimentally evaluated. In the range of temperature from 30℃ to 250℃, the adsorption capacity of base activated carbon decreased sharply with increasing temperature but that of TEDA-impregnated activated carbon showed higher value even at high temperature ranges. Especially, the desorption amount of methyl iodide on TEDA-impregnated carbon represented lower value than that on unimpregnated carbon. The breakthrough curves of methyl iodide in the fixed bed packed with base carbon and TEDA-impregnated activated carbon at high temperature were compared. TEDA-impregnated activated carbon would be applicable to adsorption process up to 150℃ for the removal of radioiodine in a nuclear facility.

• Geun-Il Park(Korea Atomic Energy Research Institute)
• In-Tae Kim(Korea Atomic Energy Research Institute)
• Jae-Kwang Lee(Dept. of Chemical Engineering, Chungnam National University)
• Seung-Kon Ryu(Dept. of Chemical Engineering, Chungnam National University)
• Joo-Hyung Kim(Korea Atomic Energy Research Institute)