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大沢 直樹*; Kim, S.-Y.*; 久保田 真彦*; Wu, H.*; 渡部 創; 伊藤 辰也; 永石 隆二
Nuclear Engineering and Technology, 56(3), p.812 - 818, 2024/03
被引用回数:0An impregnated silica-based adsorbent was prepared by combining HONTA extractant, Crea extractant, and macroporous silica polymer composite particles (SiO-P). The performance of platinum-group metals adsorption and separation on prepared (HONTA + Crea)/SiO-P adsorbent was assessed by batch-adsorption and chromatographic separation studies. (HONTA + Crea)/SiO-P adsorbent showed high adsorption performance of Pd(II) owing to an affinity between Pd(II) and Crea extractant based on the Hard and Soft Acids and Bases theory. The chromatographic experiment showed that Pd(II) was recovered entirely from the feed solution using 0.2 M thiourea in 0.1 M HNO. Possibility of recovery of Zr(IV), Mo(VI), and Re(VII) was also observed using the (HONTA + Crea)/SiO-P adsorbent.
阿久澤 禎*; Kim, S.-Y.*; 久保田 真彦*; Wu, H.*; 渡部 創; 佐野 雄一; 竹内 正行; 新井 剛*
Journal of Radioanalytical and Nuclear Chemistry, 331(12), p.5851 - 5858, 2022/12
被引用回数:5 パーセンタイル:66.21(Chemistry, Analytical)In this work, we have examined Ln(III) and MA(III) separation conditions by the extraction chromatography using HONTA adsorbent to decide the Ln(III)/MA(III) separation process fow. From the research results, we found the simulated element of Am(III) for HONTA adsorbent and the conditions to use it. In addition, Ln(III) and Am(III) (simulated element) separation experiments were carried out using the HONTA adsorbent packed column, we have determined the column separation conditions for Am(III) such as order of fow solution and fow rate.
久保田 真彦*; Kim, S.-Y.*; Wu, H.*; 渡部 創; 佐野 雄一; 竹内 正行
no journal, ,
コールド試験によって検討したフローの性能を確認するため、模擬廃液にAm, Euを加えた溶液を対象として、TEHDGAカラム及びHONTAカラムの性能評価を実施した。TEHDGAカラムではAmとLnが共回収され、HONTAカラムではAmが選択的に回収され、狙い通りにMA回収が達成可能であることを確認した。