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The radioactive waste includes radioisotope such as 129I and 131I whose half-lives are t1/2 = 1.57x107 years and t1/2 = 8.02 days, respectively. These iodine has harmful effects to humans through external and internal exposure which can bring burns to the skin and affect the thyroid gland. Therefore iodine needs to be removed safely.
"Objectives are capturing iodine species such as iodide, iodate, elemental iodine, and methyl iodide. For this study, we use various adsorbents like zeolite, activated carbon, and etc and develop the adsorption efficiency.
Chemical reaction of Iodide is key point in this study. So far, Ag(silver) shows high formation constant with iodide. But, AgI can be decomposed at high temperature to immobilize post-Ag adsorbent. To solve this problem, we study anion exchange and chemical reaction with other cation."
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