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Removal of environmentally harmful agent and multi-functionalization of water treatment using Microbubbles

Research Project

Project/Area Number 18360084
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Fluid engineering
Research InstitutionThe Institute of Physical and Chemical Research (2007)
The University of Tokyo (2006)

Principal Investigator

TAKAGI Shu  The Institute of Physical and Chemical Research, Organ/whole Body-Scale Research and Development Team, Team Leader (30272371)

Co-Investigator(Kenkyū-buntansha) MATSUMOTO Yoichiro  The University of Tokyo, Graduate School of Engineering, Professor (60111473)
FUJIWARA Akiko  University of Tsukuba, Graduate School of Systems and Information Engineering, Lecturer (40396940)
菱田 公一  慶應義塾大学, 理工学部, 教授 (40156592)
Project Period (FY) 2006 – 2007
Project Status Completed (Fiscal Year 2007)
Budget Amount *help
¥16,840,000 (Direct Cost: ¥15,100,000、Indirect Cost: ¥1,740,000)
Fiscal Year 2007: ¥7,540,000 (Direct Cost: ¥5,800,000、Indirect Cost: ¥1,740,000)
Fiscal Year 2006: ¥9,300,000 (Direct Cost: ¥9,300,000)
Keywordswater treatment / foam / floatation / microparticle / microbubble / surfactant / bubble column / adsorption / 界面 / 界面活性剤
Research Abstract

In the contemporary society where people's life style and concept of values are getting more multifaceted with the increase of richness and convenience of life, various kinds of harmful substances are exposed to the environment surrounding us. Especially, water environment is getting worse very rapidly, showing the complicated pollution features depending on the regional or industrial requirements, and this causes serious problems. Hence, the development of the water treatment technology applicable for various kinds of waste water is strongly required. In this study, we investigated the possibility of efficient methods to remove the tiny particles from the foam, which are important in the floatation process to purify the waste water using tiny bubbles (microbubbles). In the floatation process, harmful substances are adsorbed on the bubble surface and they are condensed in the foam layer during the rise and collapse of the foam. Here, we investigated small particle behaviors in the foam layer. These small particles are assumed to behave like the removal substances and they are lifted up with the rising motion of foams. To elucidate the detail particle behaviors in the foam, we conducted series of experiments. We used two kinds of surfactant. One is Casein which has a rigid foam characteristic and the other is Saponin which has the soft one. In the experiments, a thin tank was used and a laser sheet was exposed from the side of the tank. Then, the trajectories of small fluorescent particles were tracked by using the high speed video camera. Aa a results, it was shown that soft and dry foams such as Saponin foam gives the better performance to remove the small particles from the polluted water.

Report

(3 results)
  • 2007 Annual Research Report   Final Research Report Summary
  • 2006 Annual Research Report
  • Research Products

    (28 results)

All 2008 2007 2006

All Journal Article (19 results) (of which Peer Reviewed: 8 results) Presentation (8 results) Book (1 results)

  • [Journal Article] The effects of surfactant on the multiscale structure of bubbly flows2008

    • Author(s)
      Takagi, S., Ogasawara, T. and Matsumoto, Y.
    • Journal Title

      Philosophical Transaction of the Royal Society A 366

      Pages: 2117-2119

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
    • Peer Reviewed
  • [Journal Article] Numerical study on the shear-induced lift force acting on a spherical bubble in aqueous surfactant solutions2008

    • Author(s)
      Fukuta, M., Takagi, S. and Matsumoto, Y.
    • Journal Title

      Physics of Fluids 20

      Pages: 40704-40704

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
    • Peer Reviewed
  • [Journal Article] The effects of surfactant on the multiscale structure of bubbly flows2008

    • Author(s)
      Takagi, S., Ogasawara, T., Matsumoto, Y.
    • Journal Title

      Philosophical Transaction of the Royal Society A 366

      Pages: 2117-2129

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Numerical study on the shear-induced life force acting on a spherical bubble in aqueous surfactant solutions2008

    • Author(s)
      Fukuta, M., Takagi, S., Matsumoto, Y.
    • Journal Title

      Physics of Fluids 20

      Pages: 40704-40704

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] The effects of surfactant on the multiscale structure of bubbly flows2008

    • Author(s)
      Takagi, S., Ogasawara, T. and Matsumoto, Y.
    • Journal Title

      Philosophical Transaction of the Royal Society A in press

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Coarse particles sedimentation within a quasi two-dimensional rising foam2007

    • Author(s)
      Bennani, N., Fujiwara, A., Takagi, S., Matsumoto, Y.
    • Journal Title

      Colloids and Surfaces A : Physicochemical and Engineering Aspects 309

      Pages: 7-12

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
    • Peer Reviewed
  • [Journal Article] A molecular dynamics study on liquid-vapor interface adsorbed by impurities2007

    • Author(s)
      Kikugawa, G., Takagi, S. and Matsumoto, Y.
    • Journal Title

      Computers & Fluids 36

      Pages: 69-76

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
    • Peer Reviewed
  • [Journal Article] マイクロバブルにおける界面活性剤の影響2007

    • Author(s)
      高木 周
    • Journal Title

      化学工学 71

      Pages: 160-164

    • NAID

      10018736929

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
    • Peer Reviewed
  • [Journal Article] A molecular dynamics study on liquid-vapor interface adsorbed by impurities2007

    • Author(s)
      Kikugawa, G., Takagi, S., Matsumoto, Y.
    • Journal Title

      Computers & Fluids 36

      Pages: 69-76

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] The effect of surfactant on microbubbles2007

    • Author(s)
      Takagi, S.
    • Journal Title

      Chemical Engineering 71

      Pages: 160-164

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Water treatment system using microbubbles2007

    • Author(s)
      Takagi S.
    • Journal Title

      NTS pub., partial Contribution to the book named Corpus of wast water treatment technology, my contribution : chapter 5. Section 1.3

      Pages: 11-11

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Coarse particles sedimentation within a quasi twp-dimensional rising foam2007

    • Author(s)
      Bennaini.N., Fujiwara, A., Takagi, S., Matsumoto, Y.
    • Journal Title

      Colloids and Surfaces A:Physicochemical and Engineering Aspects 309

      Pages: 7-12

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A molecular dynamics study on liquid-vapor interface adsorbed by impurities2007

    • Author(s)
      Kikugawa, G., Takagi, S. and Matsumoto, Y.
    • Journal Title

      Computer & Fluids 36

      Pages: 69-76

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Coarse particles sedimentation within a quasi two-dimensional rising foam2007

    • Author(s)
      Bennani, N., Fujiwara, A., Takagi, S., Matsumoto, Y.
    • Journal Title

      Colloids and Surfaces A : Physicochemical and Engineering Aspects (to appear)

    • Related Report
      2006 Annual Research Report
  • [Journal Article] A Study on the induced liquid velocity in plumes by tiny bubbles2007

    • Author(s)
      Gong, X., Tskagi, S., Matsumoto, Y.
    • Journal Title

      Proceedings of 5^th Joint ASME/JSME Fluids Engineering Conference FEDSM2007(to appear)

      Pages: 37674-37674

    • Related Report
      2006 Annual Research Report
  • [Journal Article] マイクロバブルにおける界面活性剤の影響2007

    • Author(s)
      高木 周
    • Journal Title

      化学工学 71・3

      Pages: 160-164

    • NAID

      10018736929

    • Related Report
      2006 Annual Research Report
  • [Journal Article] ミクロスケールにおける気液界面の局所・瞬時的定義について2007

    • Author(s)
      菊川豪太, 高木 周, 松本洋一郎
    • Journal Title

      日本機械学会論文集 B編 73・725

      Pages: 118-125

    • NAID

      110006165262

    • Related Report
      2006 Annual Research Report
  • [Journal Article] マイクロバブルの生成と応用2006

    • Author(s)
      高木 周
    • Journal Title

      冷 凍 81・945

      Pages: 564-569

    • Related Report
      2006 Annual Research Report
  • [Journal Article] マイクロバブルの性質と微小気泡発生手法2006

    • Author(s)
      松本洋一郎, 高木 周, 藤原暁子
    • Journal Title

      空気清浄 43・6

      Pages: 452-461

    • NAID

      10018109361

    • Related Report
      2006 Annual Research Report
  • [Presentation] A Study on the induced liquid velocity in plumes by tiny Bubbles2007

    • Author(s)
      Gong, X., Takagi, S., Matsumoto, Y.
    • Organizer
      5th Joint ASME/JSME Fluids Engineering Conference
    • Place of Presentation
      San Diego
    • Year and Date
      2007-08-02
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] A Study on the induced liquid velocity in plumes by tiny bubbles2007

    • Author(s)
      Gong, X., Takagi, S., Matsumoto, Y.
    • Organizer
      5th Joint ASME/JSME Fluids Engineering Conference
    • Place of Presentation
      San Diego
    • Year and Date
      2007-08-02
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] A Study on the Induced Liquid Velocity in Plumes by Tiny Bubbles2007

    • Author(s)
      Gong, X., Takagi, S. and Matsumoto, Y
    • Organizer
      5th Joint ASME/JSME Fluids Engineering Conference
    • Place of Presentation
      San Diego
    • Year and Date
      2007-08-02
    • Related Report
      2007 Annual Research Report
  • [Presentation] Bubble Breakup Phenomena in Venturi Tube2007

    • Author(s)
      Fujiwara, A, X., Takagi, S., Matsumoto, Y., et. al.
    • Organizer
      5th Joint ASME/JSME Fluids Engineering Conference
    • Place of Presentation
      San Diego
    • Year and Date
      2007-08-01
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Annual Research Report 2007 Final Research Report Summary
  • [Presentation] Shear-Induced Lift Force on a Single Bubble in Surfactant Solutions2007

    • Author(s)
      Fukuta, M. Takagi, S. and Matsumoto, Y
    • Organizer
      5th Joint ASME/JSME Fluids Engineering Conference
    • Place of Presentation
      San Diego
    • Year and Date
      2007-08-01
    • Related Report
      2007 Annual Research Report
  • [Presentation] Surfactant Effect on the Multiscale Structure of Bubbly Flow2007

    • Author(s)
      Takagi, S.
    • Organizer
      International Conference on Multiphase Flows 2007
    • Place of Presentation
      Leipzig
    • Year and Date
      2007-07-09
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Surfactant Effect on the Multiscale Structure of Bubbly Flow2007

    • Author(s)
      Takagi, S.
    • Organizer
      International Conference on Multiphase Flown 2007
    • Place of Presentation
      Leipzig
    • Year and Date
      2007-07-09
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Surfactant Effect on the Structure of Bubbly Flow2006

    • Author(s)
      Takagi, S.
    • Organizer
      The 5th International Conference on Measurement Techniques for Multiphase Flows
    • Place of Presentation
      Macau
    • Year and Date
      2006-12-12
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Book] 「排水・汚水処理技術集成」第5章 1.3節「マイクロバブルによる水処理システム」2007

    • Author(s)
      高木 周(分担執筆)
    • Total Pages
      11
    • Publisher
      (株)エヌ・ティー・エス
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary

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Published: 2006-04-01   Modified: 2016-04-21  

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