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渡部 創; 佐野 雄一; 三田 修平*; 桜井 翔太*; 新井 剛*
日本イオン交換学会誌, 30(1), p.8 - 16, 2019/01
In order to optimize operability of the adsorbents in the extraction chromatography system and to enhance the performance of the adsorbent, CMPO/SiO-P adsorbents with various pore and particle sizes were prepared, and characteristics of the adsorbents were evaluated through distribution coefficient, adsorption isotherm, adsorption rate, and breakthrough/elution behavior. Adsorption capacity was dominated not by the structure of the adsorbent but by amount of the extractant impregnated. The adsorbent with the largest pore size were revealed to show quick elution with short tail. Enlargement in the pore size must be one of the most effective improvements of the adsorbents to enhance the adsorption/elution performance. Adsorbent with particle size of more than 200 m formed channeling or voids inside the bed. They are suspected to lead slow adsorption/elution behavior, and smaller adsorbents must be desirable in the respect of performance of the column.
桜井 翔太*; 小田 僚平*; 新井 剛*; 永山 勝久*; 野村 和則; 佐野 雄一; 明珍 宗孝
no journal, ,
「高速増殖炉サイクル実用化戦略調査研究」において高速増殖炉再処理におけるMA回収技術として抽出クロマトグラフィ法が研究されている。しかし、MA分離時に発生する放射性分解ガス、腐食生成物由来のスラッジは吸着材の分離能の低下を招く可能性がある。そこで本研究では、粒径が異なるCMPO吸着材を充填したカラムにおける放射性ガス、溶解スラッジの移行挙動等を比較することにより、吸着材の基本構造がカラム内のガス・スラッジ滞留挙動に及ぼす影響について、吸着平衡特性、吸着速度、温度依存性等の観点から検討を加えて影響評価を行った。