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| Research and Application of Adsorbents for Removing Radioiodine from Dissolver off-Gas in Nuclear Fuel Reprocessing Plant |
| LIANG Fei, LI Yong-guo, ZHANG Ji-rong, QIAO Tai-fei, WANG Kun-jun, WU Bo, ZHANG Qun |
| China Institute For Radiation Protection, Taiyuan 030006 China |
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Abstract Objective The relationship of influence factors and adsorption properties of adsorbents were discussed. Methods Future resarch dirctons were given by reviewing the research and application of adsorbents for removing radioiodine from dissolver off-gas in nuclear fuel reprocessing plant. Results It shows that the silver-based adsorbents have better capability for removing radioiodine and are the currently preferred sorbents. Furthermore,in-process of aging,silver-exchanged mordenites have an advantage of possible generation to save cost and reduce radioactive waste. Silver-functionalized silica aerogels are suitable for direct conversion to waste form for long-term storage. Conclusion But their primary disadvantage is costliness of silver,therefore non-silver-based adsorbents and organic porous sorbent will have broad application future by development for iodine removal from dissolver off-gas (DOG) streams of nuclear fuel reprocessing plant.
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Received: 28 April 2015
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