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Autonomous extraction and separation for rare-earth metals using self-propelled droplets with a pH-responsive function

Research Project

Project/Area Number 25550069
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeSingle-year Grants
Research Field Environmental conscious materials and recycle
Research InstitutionOsaka University

Principal Investigator

BAN Takahiko  大阪大学, 基礎工学研究科, 講師 (60454485)

Project Period (FY) 2013-04-01 – 2014-03-31
Project Status Completed (Fiscal Year 2013)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2013: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Keywords廃棄物再資源化 / 環境技術 / 海洋資源 / 自己組織化 / 化学工学 / アクティブソフトマター / 環境応答性 / Marangoni効果 / レアアース / 自己駆動 / 非平衡開放系
Research Abstract

We have developed self-propelled droplets having the abilities to detect a chemical gradient, to move toward a higher concentration of a specific metal ion, and to extract it. Such abilities rely on the high surface activity of DEHPA in response to pH and the affinity of DEHPA for the dysprosium ion. We used two external stimuli as chemical signals to control droplet motion: a pH signal to induce motility, and metal ions to induce directional sensing. The oil droplets loaded with DEHPA spontaneously move around beyond the threshold of pH even in a homogeneous pH field. In the presence of a gel block containing metal ions, the droplets show directional sensing and their motility is biased toward higher concentrations. The metal ions can be arranged in decreasing order of directional sensing as Dy>>Nd>Y>Gd. Furthermore, the analysis of component by an atomic absorption spectrophotometer reveals that the metal ions can be extracted to the interiors of the droplets.

Report

(2 results)
  • 2013 Annual Research Report   Final Research Report ( PDF )
  • Research Products

    (23 results)

All 2014 2013 Other

All Journal Article (6 results) (of which Peer Reviewed: 2 results) Presentation (17 results) (of which Invited: 1 results)

  • [Journal Article] Marangoni効果に起因する液滴振動現象のモード変化に関する熱力学的考察2014

    • Journal Title

      化学工学論文集

      Volume: 第40巻, 第4号 Pages: 1-5

    • Related Report
      2013 Final Research Report
  • [Journal Article] Marangoni効果に起因する液滴振動現象のモード変化に関する熱力学的考察2014

    • Author(s)
      伴 貴彦・畑田 洋祐・堀江 和樹
    • Journal Title

      化学工学論文集

      Volume: 未定

    • NAID

      130004463944

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] pH-Dependent Motion of Self-Propelled Droplets due to Marangoni Effect at Neutral pH2013

    • Author(s)
      T. Ban, T. Yamagami, H, Nakata, Y. Okano
    • Journal Title

      Langmuir

      Volume: vol.29 Pages: 2554-2561

    • Related Report
      2013 Final Research Report
  • [Journal Article] pH-dependent motion of self-propelled droplets due to Marangoni effect at neutral pH2013

    • Author(s)
      T. Ban, T. Yamagami, H. Nakata, Y. Okano
    • Journal Title

      Langmuir

      Volume: 29 Pages: 2554-2561

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] HUNTING RARE-EARTH METAL IONS WITH SELF-PROPELLED DROPLET WITH pH-RESPONSIVE FUNCTION2013

    • Author(s)
      K. TANI, H. NAKATA, T. BAN, Y. OKANO
    • Journal Title

      The 24th International Symposium on Transport Phenomena

      Volume: 24 Pages: 50-54

    • Related Report
      2013 Annual Research Report
  • [Journal Article] Hunting Rare-earth Metal Ions With Self-propelled Droplet With pH-Responsive Function

    • Author(s)
      Tani, K. Nakata, H. T. Ban, Okano, Y
    • Journal Title

      International Symposium on Transport Phenomena

    • Related Report
      2013 Final Research Report
  • [Presentation] pH Control of Self-Propelled Droplets2013

    • Author(s)
      Takahiko Ban, Hiroki Nakata, Kentaro Tani, Yohei Takagi, Yasunori Okano
    • Organizer
      International Soft Matter Conference 2013
    • Place of Presentation
      Roma, Italy
    • Related Report
      2013 Final Research Report
  • [Presentation] pH-Dependent Motion of Self-Propelled Droplets due to Marangoni Effect2013

    • Author(s)
      Takahiko Ban
    • Organizer
      World Congress on Petrochemistry and Chemical Engineering (2013)
    • Place of Presentation
      San Antonio, USA
    • Related Report
      2013 Final Research Report
  • [Presentation] Hunting Rare-earth Metal Ions With Self-propelled Droplet With pH-Responsive Function2013

    • Author(s)
      Tani, K. Nakata, H. Takahiko Ban, Okano, Y
    • Organizer
      International Symposium on Transport Phenomena 2013
    • Place of Presentation
      Yamaguchi, Japan
    • Related Report
      2013 Final Research Report
  • [Presentation] 微粒子沈殿帯の動的なパターン形成とゲルの相分離構造との関係2013

    • Author(s)
      伴貴彦, 加地大, 野村吉貴, 高木洋平, 岡野泰則
    • Organizer
      日本物理学会秋季大会
    • Place of Presentation
      徳島
    • Related Report
      2013 Final Research Report
  • [Presentation] 化学信号による液滴の自発運動2013

    • Author(s)
      伴貴彦, 中田大樹, 谷健太朗, 高木洋平, 岡野泰則
    • Organizer
      日本物理学会秋季大会
    • Place of Presentation
      徳島
    • Related Report
      2013 Final Research Report
  • [Presentation] アクティブソフトマターの七不思議~その壱~捕獲せよ!!液滴2013

    • Author(s)
      中田大樹, 伴貴彦
    • Organizer
      第23回非線形反応と協同現象研究会
    • Place of Presentation
      北海道
    • Related Report
      2013 Final Research Report
  • [Presentation] アクティブソフトマターの七不思議~その弐~回収せよ!!液滴2013

    • Author(s)
      谷健太朗, 伴貴彦
    • Organizer
      第23回非線形反応と協同現象研究会
    • Place of Presentation
      北海道
    • Related Report
      2013 Final Research Report
  • [Presentation] アクティブソフトマターの七不思議~その参~変形せよ!!ベシクル2013

    • Author(s)
      福山隆, 伴貴彦
    • Organizer
      第23回非線形反応と協同現象研究会
    • Place of Presentation
      北海道
    • Related Report
      2013 Final Research Report
  • [Presentation] pH Control of Self-Propelled Droplets2013

    • Author(s)
      Takahiko Ban
    • Organizer
      International Soft Matter Conference
    • Place of Presentation
      Roma
    • Related Report
      2013 Annual Research Report
  • [Presentation] pH-dependent motion of self-propelled droplets due to Marangoni effect2013

    • Author(s)
      Takahiko Ban
    • Organizer
      World Congress on Petrochemistry and Chemical Engineering
    • Place of Presentation
      San Antonio
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Presentation] 微粒子沈殿帯の動的なパターン形成とゲルの相分離構造との関係2013

    • Author(s)
      伴 貴彦,加地大,野村吉貴,高木洋平,岡野泰則
    • Organizer
      日本物理学会秋季大会
    • Place of Presentation
      徳島大学
    • Related Report
      2013 Annual Research Report
  • [Presentation] 化学信号による液滴の自発運動2013

    • Author(s)
      伴 貴彦,中田大樹,谷健太朗,高木洋平,岡野泰則
    • Organizer
      日本物理学会秋季大会
    • Place of Presentation
      徳島大学
    • Related Report
      2013 Annual Research Report
  • [Presentation] アクティブソフトマターの七不思議~その壱~捕獲せよ!!液滴2013

    • Author(s)
      中田大樹・伴貴彦
    • Organizer
      非線形反応と協同現象研究会
    • Place of Presentation
      北海道大学
    • Related Report
      2013 Annual Research Report
  • [Presentation] アクティブソフトマターの七不思議~その弐~回収せよ!!液滴2013

    • Author(s)
      谷健太朗・伴貴彦
    • Organizer
      非線形反応と協同現象研究会
    • Place of Presentation
      北海道大学
    • Related Report
      2013 Annual Research Report
  • [Presentation] アクティブソフトマターの七不思議~その参~変形せよ!!ベシクル2013

    • Author(s)
      福山隆・伴貴彦
    • Organizer
      非線形反応と協同現象研究会
    • Place of Presentation
      北海道大学
    • Related Report
      2013 Annual Research Report
  • [Presentation] HUNTING RARE-EARTH METAL IONS WITH SELF-PROPELLED2013

    • Author(s)
      K. Tani, H. Nakata, T. Ban, Y. Okano
    • Organizer
      The 24th International Symposium on Transport Phenomena
    • Place of Presentation
      山口東京理科大学
    • Related Report
      2013 Annual Research Report
  • [Presentation] アクティブソフトマターの高機能化2013

    • Author(s)
      伴貴彦
    • Organizer
      第7回自己組織化討論会
    • Place of Presentation
      晴海グランドホテル
    • Related Report
      2013 Annual Research Report

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Published: 2014-07-25   Modified: 2016-11-25  

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