Preparation of Insoluble Hexacyanoferrate(II)-Macroporous Ion Exchange Resin Composites and Comparison of Their Performance as a Regenerable Ion Exchanger for Cesium

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Other Title
  • 多孔性型イオン交換樹脂を担体とする不溶性ヘキサシアノ鉄(II)酸塩担持複合イオン交換体の調製とその性能
  • タコウセイガタ イオン コウカン ジュシ オ タンタイ ト スル フヨウセイ
  • Composite Ion Exchangers for Cesium Separation. II. Preparation of Insoluble Hexacyanoferrate(II)-Macroporous Ion Exchange Resin Composites and Comparison of Their Performance as a Regenerable Ion Exchanger for Cesium.

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Description

Effectiveness of incorporating insoluble hexacyanoferrate (II) into the pores of macroporous ion exchange resins by utilizing their ionogenic groups has been examined. Sorption-desorption-regeneration performance for cesium separation is compared for the composites prepared by using various ion exchange resins and insoluble hexacyanoferrate salt-forming reagents.<BR>Among insoluble hexacyanoferrate (II) salts impregnated, copp er (II)exacyanoferrate (CuFC)is the best reductant for a redox type iori exchanger having ion exchanging and electron exchanging functions. Therefore, this CuFC-ion exchange resin system shows excellent sorption-desorptionregeneration performance for cesium separation. Anion exchange resins work better than cation exchange resins as supports to incorporate CuFC. Excellent composites for cesium separation are obtained from anion exchange resins containing weakly basic groups rather than strongly basic ones. For example, Amberlite IRA-94S (weakly basic styrene-divinylbenzene-based resin) /CuFC composite can be repeatedly used more than seven times for cesium separation from 3 mol dm-3 sodium nitrate solution.

Journal

  • NIPPON KAGAKU KAISHI

    NIPPON KAGAKU KAISHI 1996 (9), 835-841, 1996-09-10

    The Chemical Society of Japan

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