Selective separation and recovery of oxoanions

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  • イオン交換法によるオキソ酸イオンの選択的分離・回収
  • 特集 イオン交換と再処理・放射性廃棄物処理(第4回)イオン交換法によるオキソ酸イオンの選択的分離・回収
  • トクシュウ イオン コウカン ト サイショリ ホウシャセイ ハイキブツ ショリ ダイ4カイ イオン コウカンホウ ニ ヨル オキソサン イオン ノ センタクテキ ブンリ カイシュウ

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Abstract

Among fission products in spent fuels, extremely high-grade rare metals are contained. In nuclear rare metals, Mo and Tc nuclides are very useful in the field of metallic materials, chemistry, electric industry and medical treatment. Lately, much attention has been focused on the selective separation and recovery of nuclear rare metals in the high-level liquid wastes generated from the reprocessing of spent fuels. The selective separation, recovery and effective utilization of nuclear rare metals result in a conversion of wastes to valuable resources and the accomplishment of rationalization of treatment and disposal of high-level radioactive wastes. As for the separation of nuclear rare metals, ion-exchange methods are more promising for the compact column process compared to solvent extraction techniques. This special issue deals with the following items (1) Generation and characteristics of nuclear rare metals such as Mo and Tc oxoanions, (2) Separation properties of promising ion-exchangers, and (3) Advanced nuclide separation system including the recovery processes of oxoanions.<br>

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