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ISSN : 1738-1894(Print)
ISSN : 2288-5471(Online)
ISSN : 2288-5471(Online)
고온공정에서 은교환 제올라이트 및 TEDA 첨착활성탄의 유기요오드 제거성능
Removal Efficiency of Organic Iodide on Silver Ion-Exchanged Yeolite and TEDA-AC at High Temperature Process
Abstract
Adsorption and desorption characteristics of methyl iodide at high temperature conditions up to 25 by TEDA-impregnated activated carbon and silver-ion exchanged zeolite(AgX-10), which are used for radioiodine retention in nuclear facility, were experimentally evaluated. In the range of temperature from 3 to 25, 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 residual amount of methyl iodide after desorption on TEDA-AC represented 30% lower value than that on AgX-10. However, it can be used as an adsorbent for the removal of methyl iodide up to 15 if it is preventing explosion by Ignition. The breakthrough curves of methyl iodide in the fixed bed packed with AgX-10 uP to 40 were compared upon the effects of bed temperatures, bed depth and input concentration of methyl iodide. Removal mechanism of methyl iodide on AgX-10 was proposed, based on the analysis of by-product gas generated from adsorption reaction.
methyl iodide, zeolite, activated carbon, AgX, TEDA-AC, adsorption, desorption, 메틸요오드, 제올라이트, 활성탄, AgX, TEDA, 흡착, 탈착
Reference
JNFCWT
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Korean Radioactive
Waste Society (KRS)
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