• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

A New Approach for Separation of Rare Earth Elements and Minor Actinides Utilizing the Software Interface as a Reaction Field

Research Project

Project/Area Number 19H02644
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 31010:Nuclear engineering-related
Research InstitutionUniversity of Tsukuba

Principal Investigator

Yamasaki Shinya  筑波大学, 数理物質系, 助教 (70610301)

Co-Investigator(Kenkyū-buntansha) 関根 由莉奈  国立研究開発法人日本原子力研究開発機構, 原子力科学研究部門 原子力科学研究所 物質科学研究センター, 研究副主幹 (00636912)
田中 万也  国立研究開発法人日本原子力研究開発機構, 原子力科学研究部門 原子力科学研究所 先端基礎研究センター, 研究主幹 (60377992)
菱田 真史  筑波大学, 数理物質系, 助教 (70519058)
Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥16,900,000 (Direct Cost: ¥13,000,000、Indirect Cost: ¥3,900,000)
Fiscal Year 2022: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2020: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2019: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Keywordsリポソーム / リン脂質 / ベシクル / 吸着 / ジグリコールアミド / ランタノイド / 希土類元素 / アクチノイド / 高レベル放射性廃液 / 抽出剤 / 核種分離 / バックエンド / 抽出 / DGA配位子 / X線分光 / 蛍光 / 溶媒抽出 / DGA
Outline of Research at the Start

原子炉の稼動により生じる高レベル放射性廃液(HLW)を適切に処分するために、環境負荷の少ない方法を用いて元素ごとに分離する事が検討されている。本研究では、この目的を達成するための新しい手法として、リン脂質二重膜(リポソーム)を分離媒体とした希土類元素およびマイナーアクチノイドの新規分離法を構築する。これは従来の手法と異なり、有機溶媒を用いずに分離する事が期待できるため、環境負荷等を大幅に低減することが期待される。また、反応速度論や化学平衡論に基づいて化学組成や反応機構を精査することで本手法の効率を上げ、実用化に向けた系を提案する。

Outline of Final Research Achievements

A new extraction system was constructed by introducing a diglycolic acid (DGA)-type ligand, which is selective for lanthanides, in liposomes. Experimental results showed that when introducing DGA-type ligands into liposomes, the longer the hydrophobic group of DGA, the more DGA can be encapsulated into liposomes. Changing the length of the ligand did not affect the reaction mechanism of the hydrophilic part of DGA. Using these DGA-encapsulated liposomes, lanthanides could be recovered without the use of organic solvents. Based on these results, this method is considered to be effective as a new elemental extraction method with low environmental impact.

Academic Significance and Societal Importance of the Research Achievements

本研究では、リポソームを反応場とする抽出法を構築し、リポソームに配位子を混ぜることでランタノイドイオンが回収できる事を示した。また、回収の際の吸着メカニズムや反応効率化に寄与する条件などを化学的手法により明らかにした。本法を基礎として、配位子の種類を変えることにより他の金属等も同様に回収できる可能性が高いと考えられる。
従来法である溶媒抽出法は、多段階かつ大規模分離に向いているため多くの金属元素の抽出に用いられているが、環境負荷の高い有機溶媒を大量に用いる点が改善点の一つである。一方、リポソームは界面活性剤からなる生体由来の分子集合体であり、有機層を用いずに水相のみで抽出できる。

Report

(5 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • Research Products

    (10 results)

All 2023 2022 2021 2020 2019 Other

All Journal Article (7 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 7 results,  Open Access: 1 results) Presentation (2 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results) Remarks (1 results)

  • [Journal Article] Occurrence of radioactive cesium-rich micro-particles (CsMPs) in a school building located 2.8 km south-west of the Fukushima Daiichi Nuclear Power Plant2023

    • Author(s)
      Kazuki Fueda, Tatsuki Komiya, Kenta Minomo, Kenji Horie, Mami Takehara, Shinya Yamasaki, Hiroyuki Shiotsu, Toshihiko Ohnuki, Bernd Grambow, Gareth T.W. Law, Rodney C. Ewing, Satoshi Utsunomiya
    • Journal Title

      Chemosphere

      Volume: 328 Pages: 1-12

    • DOI

      10.1016/j.chemosphere.2023.138566

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Gravitational separation of 137Cs contaminated soil in Fukushima environment: Density dependence of 137Cs activity and application to volume reduction2022

    • Author(s)
      S. Yamasaki, H. Saito, T. Nakamura, K. Morooka, K. Sueki, S. Utsunomiya
    • Journal Title

      Journal of Environmental Radioactivity

      Volume: 246 Pages: 1-10

    • DOI

      10.1016/j.jenvrad.2022.106846

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A review of efforts for volume reduction of contaminated soil in the ten years after the accident at the Fukushima Daiichi Nuclear Power Plant2022

    • Author(s)
      S. Yamasaki, S. Utsunomiya
    • Journal Title

      Journal of Nuclear Science and Technology

      Volume: 59 Issue: 2 Pages: 135-147

    • DOI

      10.1080/00223131.2021.1974596

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Ion-selective adsorption of lead by a two-dimensional terbium oxalate framework2022

    • Author(s)
      T. Nankawa, Y. Sekine, T. Yamada
    • Journal Title

      Bulletin of the Chemical Society of Japan

      Volume: -

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Sewage sludge ash contaminated with radiocesium: Solidification with alkaline-reacted metakaolinite (geopolymer) and Portland cement2021

    • Author(s)
      N. Kozai, J. Sato, T.Osugi, I. Shimoyama, Y. Sekine, F. Sakamoto, T. Ohnuki
    • Journal Title

      Journal of Hazardous Materials

      Volume: 416 Pages: 1-9

    • DOI

      10.1016/j.jhazmat.2021.125965

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Nano-scaled Calcium Molybdate Particle Formation on Egg Phosphatidylcholine Liposome Surface2019

    • Author(s)
      S Yamasaki, S Kurita, A Ochiai, K Sueki, S Utsunomiya
    • Journal Title

      Chemistry Letters

      Volume: 48 Issue: 12 Pages: 1480-1483

    • DOI

      10.1246/cl.190651

    • NAID

      130007757526

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Application of M<sub>V</sub>-edge XANES to determination of U oxidation state in zircon2019

    • Author(s)
      Tanaka, K. and Takahashi, Y.
    • Journal Title

      GEOCHEMICAL JOURNAL

      Volume: 53 Issue: 5 Pages: 329-331

    • DOI

      10.2343/geochemj.2.0568

    • NAID

      130007724537

    • ISSN
      0016-7002, 1880-5973
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Presentation] 親水基に依存したリン脂質ミセル間相互作用2020

    • Author(s)
      阿部充華・菱田真史・山村泰久・齋藤一弥
    • Organizer
      第71回コロイドおよび界面化学討論会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Involvement of Hydration Water on the Phase Transitions of Lipids and Surfactants2019

    • Author(s)
      Mafumi Hishida
    • Organizer
      The Seventh International Symposium on the New Frontiers of Thermal Studies of Materials
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Remarks] 論文リスト(YAMASAKI Shinya)

    • URL

      https://scholar.google.co.jp/citations?user=DofnadIAAAAJ&hl=ja

    • Related Report
      2019 Annual Research Report

URL: 

Published: 2019-04-18   Modified: 2024-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi