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Size-specific separation of particles from suspensions by ultrasonic atomization under controlled conditions for cavitation

Research Project

Project/Area Number 17H03445
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Properties in chemical engineering process/Transfer operation/Unit operation
Research InstitutionKagoshima University

Principal Investigator

NII Susumu  鹿児島大学, 理工学域工学系, 教授 (90262865)

Co-Investigator(Kenkyū-buntansha) 水田 敬  鹿児島大学, 理工学域工学系, 助教 (10336323)
五島 崇  鹿児島大学, 理工学域工学系, 助教 (90709560)
Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥18,200,000 (Direct Cost: ¥14,000,000、Indirect Cost: ¥4,200,000)
Fiscal Year 2019: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2018: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2017: ¥14,170,000 (Direct Cost: ¥10,900,000、Indirect Cost: ¥3,270,000)
Keywords異相分離 / サブミクロン粒子 / 超音波 / 霧化 / 気泡 / ナノ粒子 / キャビテーション
Outline of Final Research Achievements

Ultrasonically assisted size-selective separation of nanoparticles was developed. Silica particles of around 100 nm were selectively transferred in the ultrasonically prepared mist from the suspension containing various sizes of nanoparticles. The separation is strongly affected by ultrasonic cavitation in the sample suspension. By choosing appropriate conditions, the selectivity and enrichment factors changes dramatically. Furthermore, a novel method to visualize ultrasonic cavitation under the ultrasonic atomization was developed. The method helps us to know the local strength of the cavitation in the ultrasonic atomization.

Academic Significance and Societal Importance of the Research Achievements

液体への超音波で生成する霧を、液中から特定粒子を選択的に運ぶキャリアーとして用いる新発想に基づく分離現象の機構を解明することで、より精密かつ効率的な分離現象の制御が可能となり、学術的意義は高い。また社会的には、現在の工業的な課題であるサブミクロン粒子の混合物におけるサイズ選択分離に対して、簡単な操作で分離できる新たな解決法を提案するという大きい意義がある。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • Research Products

    (10 results)

All 2019 2018 2017

All Presentation (10 results) (of which Int'l Joint Research: 3 results,  Invited: 4 results)

  • [Presentation] 液中への高周波超音波照射時の化学発光法によるキャビテーション定量の調査2019

    • Author(s)
      二宮大樹、五島崇、水田敬、二井晋
    • Organizer
      第30回九州地区若手ケミカルエンジニア討論会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Ultrasound, a potential game changer2019

    • Author(s)
      二井晋
    • Organizer
      Asian Pacific Cofederation of Chemical Engineering, APCChE2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 液柱および霧化を生じる条件でのキャビテーションの可視化2019

    • Author(s)
      二宮大樹、五島 崇、水田 敬、二井 晋
    • Organizer
      第28回ソノケミストリー討論会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 超音波霧化による水懸濁液からのサブミクロン粒子の選択分離-溶存ガスの影響-2019

    • Author(s)
      市來彩華、作本祐一郎、五島 崇、水田 敬
    • Organizer
      第28回ソノケミストリー討論会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 超音波霧化を用いた水懸濁液からのサブミクロン粒子の選択分離2018

    • Author(s)
      作本 祐一郎, 五島 崇, 水田 敬, 二井 晋
    • Organizer
      化学工学会第50回秋季大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Nanoparticles separation and evaporation enhancement using nanodroplet generated by ultrasonic atomization2018

    • Author(s)
      Susumu Nii
    • Organizer
      International Conference on Nanomaterials and Nanotechnology
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 分離における界面の積極的な制御2018

    • Author(s)
      二井 晋
    • Organizer
      化学工学会第50回秋季大会
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] 超音波霧化による水懸濁液からのサブミクロン粒子選択分離2018

    • Author(s)
      作本祐一郎, 二宮大樹, 五島崇, 水田敬
    • Organizer
      第27回ソノケミストリー討論会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 超音波霧化によるサブミクロン粒子の濃縮2018

    • Author(s)
      二宮大樹, 作本祐一郎, 五島崇, 水田敬, 二井晋
    • Organizer
      第27回ソノケミストリー討論会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Recent trends of ultrasonic atomization2017

    • Author(s)
      Susumu NII
    • Organizer
      AOSS-3, Asia-Oceania sonochemical society conference
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited

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Published: 2017-04-28   Modified: 2021-02-19  

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