私が粘土科学者になった訳 : 粘土鉱物と関わった研究について(<シンポジウム特集>女性研究者が拓く粘土科学)

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  • My Carrier as a Clay Scientist
  • 私が粘土科学者になった訳 : 粘土鉱物と関わった研究について
  • ワタクシ ガ ネンド カガクシャ ニ ナッタ ヤク : ネンド コウブツ ト カカワッタ ケンキュウ ニ ツイテ

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My personal research history on some clay minerals was introduced. Synthetic sodium difluorotetrasilicate (Na-TSM) was researched as cesium ion exchanger for buffer material of the stratum disposal. Na-TSM showed high selectivity for the cesium ion compare to the other alkaline metal ions. The cesium ion which ion-exchanged on Na-TSM was hardly desorbed. These results suggested that Na-TSM was suiTable for the fixation of ^<137>Cs. Also it was researched as the host material of a drug/phosphatydilcoline/Na-TSM intercalation compound. The intercalation technique was available in the pharmaceutical field because several advantages were expected such as the release-rate control of drugs and the resistance to water. In addition, resent study of the Cs salvage material was discussed. Although zeolite and other adsorbents were used for the decontamination system at the Fukushima Dai-ichi Nuclear Power Plant, it was still useful to perform investigations on new adsorbents. Authors choose sodium taeniolite (Na-TAE) as an adsorbent, because it had the best ability to uptake cesium from the aqueous solution among synthetic mica family. To use TAE for Cs adsorbent, it was necessary to produce the powder TAE into some formations such as granulated material or membrane. According to this prerequisite, authors investigated a method to produce sponge-like formed TAE (abbreviated S-TAE) with polyvinylidene fluoride. S-TAE showed suiTable ability for Cs uptake compare to the powder Na-TAE. It was suggested that S-TAE would be a new cesium adsorbent.

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  • 粘土科学

    粘土科学 52 (3), 109-113, 2014

    一般社団法人 日本粘土学会

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