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Hydrodynamic Behavior of Colloidal Suspension as a Carrier of Hazardous Substances

Research Project

Project/Area Number 13556035
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section展開研究
Research Field Irrigation, drainage and rural engineering/Rural planning
Research InstitutionUniversity of Tsukuba

Principal Investigator

ADACHI Yasuhisa  University of Tsukuba, Institute of Agricultural and Forest Engineering, Associate professor, 農林工学系, 助教授 (70192466)

Co-Investigator(Kenkyū-buntansha) MIHARA Machito  Tokyo University of Agriculture, Faculty of Regional Environment Science, Associate professor, 地域環境科学部, 助教授 (00256645)
NAKAISHI Katsuya  Ibaraki University, college of Agriculture, Associate professor, 農学部, 助教授 (40180236)
NANZYO Masami  Tohoku University, Graduate School of Agricultural Science, professor, 大学院・農学系研究科, 教授 (60218071)
NAGASAKI Shinya  The University of Tokyo, Graduate School of Frontier Sciences, Associate professor, 大学院・新領域創生科学研究科, 助教授 (20240723)
OOI Setsuo  National Institute of Rural Engineering, Department of Regional Resources, Senior Researcher, 農村整備部, 主任研究官
Project Period (FY) 2001 – 2003
Project Status Completed (Fiscal Year 2003)
Budget Amount *help
¥10,800,000 (Direct Cost: ¥10,800,000)
Fiscal Year 2003: ¥1,700,000 (Direct Cost: ¥1,700,000)
Fiscal Year 2002: ¥2,900,000 (Direct Cost: ¥2,900,000)
Fiscal Year 2001: ¥6,200,000 (Direct Cost: ¥6,200,000)
Keywordscolloid / coagulation / dispersion / floc / soil / clay / humic substance / polyelectrolyte / 汚染物質のキャリア / 土壌カラム / フラリタル次元 / フラクタル次元 / モンモリロナイト
Research Abstract

Hazardous substances of low water solubility, e.g. heavy metal and dioxin, can migrate in the water forming complexes with soil colloids such as clay and humic substances. Therefore, hydrodynamic behavior of soil colloids with potential of contaminant carrier is crucial when the system of monitoring, the scheme of assessment and the criteria of environment are considered. The present study is performed focusing this aspect placing an emphasis on the fact that hydrodynamic behavior of colloid is critically controlled by the stability of colloid Obtained results can be summarized as follows:
1)The increase of excluded volume due to the formation of floc structure was turned out to be important for the description of rheological properties which are critically related to the transportation problem. This effect was experimentally verified for the kinetics of flocculation in the shear field, capillary viscometry and bridging flocculation with polyelectrolytes.
2)Set-up of column experiment was established as a model system of colloid transport in the ground water. The presence of a functional form of the filtering of colloidal material against flocculation and dispersion of colloid particles and the scale of pore in the column was verified. This can be the basis for the further analysis of hydrodynamic properties of colloidal particles in relation to the rate theory of coagulation in the flow field.
3)The role of organic substances such as humic substances are critical when considering the formation of complex of heavy metal on the clay surface. This is also important in the analysis of flocculation. However, very little is know about this aspect, which is the motivation of further study.

Report

(4 results)
  • 2003 Annual Research Report   Final Research Report Summary
  • 2002 Annual Research Report
  • 2001 Annual Research Report
  • Research Products

    (19 results)

All 2005 2004 2003 2002 Other

All Journal Article (9 results) Book (2 results) Publications (8 results)

  • [Journal Article] 牛ふんコンポストの積載・灌水による土壌の化学性と水浸透性の変化2005

    • Author(s)
      南條正巳, 山田恵子
    • Journal Title

      土壌の物理性 No.99

      Pages: 45-54

    • NAID

      130008093559

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Journal Article] Changes in Chemical Properties and Water-percolation of Soil Overlaid with Cattle Manure Compost2005

    • Author(s)
      Masami Nanzyo
    • Journal Title

      J.Jpn.Soc.Soil Phys. No,99

      Pages: 45-54

    • NAID

      130008093559

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Journal Article] Densification of Small Flocs Formed in the Mixing Flow under the Condition of Rapid Coagulation2004

    • Author(s)
      Yasuhisa Adachi
    • Journal Title

      農業土木学会論文集 No.233

      Pages: 49-56

    • NAID

      10013726213

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Journal Article] ガラスビーズ及び鹿沼土カラムを通過するモデルコロイド粒子の輸送に対するコロイド安定性および間隙径の影響2004

    • Author(s)
      山下祐司, 足立泰久
    • Journal Title

      農業土木学会論文集 No.233

      Pages: 75-81

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Journal Article] Densification of Small Flocs Formed in the Mixing Flow under the Condition of Rapid Coagulation2004

    • Author(s)
      Yasuhisa Adachi
    • Journal Title

      Transactions of The Japanese Society of Irrigation, Drainage and Reclamation Engineering No.233

      Pages: 49-56

    • NAID

      10013726213

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Journal Article] Effects of Colloidal Stability and Pore Size on Transport of Model colloids through Column Packed with Glass Beads or Kanuma Soil2004

    • Author(s)
      Yuji Yamashita, Yasuhisa Adachi
    • Journal Title

      Transactions of The Japanese Society of Irrigation, Drainage and Reclamation Engineering No.233

      Pages: 75-81

    • NAID

      10013726271

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Journal Article] Early-stage flocculation kinetics of polystyrene latex particles with polyelectrolytes studied in the standardized mixing Contrast of excess and moderate polyelectrolyte dosage2003

    • Author(s)
      Yasuhisa Adachi
    • Journal Title

      Colloids and Surfaces A. : Physicochemical and Engineering Aspects Vol.230

      Pages: 37-44

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Journal Article] Settling velocity of a sodium montmorillonite floc under high ionic strength2002

    • Author(s)
      Kazumi Miyahara, Yasuhisa Adachi
    • Journal Title

      Colloids and Surfaces A. : Physicochemical and Engineering Aspects Vol.196

      Pages: 87-91

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Journal Article] Effects of hydrodynamic mixing intensity coupled with ionic strength on the initial stage dynamics of bridging flocculation of polystyrene latex particles with polyelectrolyte2002

    • Author(s)
      Yasuhisa Adachi
    • Journal Title

      Colloids and Surfaces A. : Physicochemical and Engineering Aspects Vol.207

      Pages: 253-261

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Book] 土のコロイド現象2003

    • Author(s)
      足立泰久
    • Total Pages
      451
    • Publisher
      学会出版センター
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Book] Colloid Phenomenon of Soil2003

    • Author(s)
      Yasuhisa Adachi
    • Total Pages
      451
    • Publisher
      Japan Scientific Societies Press
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Y.Adachi, K.Aoki: "Early-stage flocculation kinetics of polystyrene latex particles with polyelectrolytes studied in the standardized mixing : Contrast of excess and moderate polyelectrolyte dosage"Colloids and Surfaces A. 230. 37-44 (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] Motoyoshi Kobayasbi, Takashi Maekita, Yasuhisa Adachi, Hiroshi Sasaki: "Colloid stability and coagulation rate of polystyrene latex particles in a turbulent flow"International Journal of Mineral Processing. (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] Y.Adachi, T.Matsumoto, M.A.Cohen Stuart: "Effects of hydrodynamic mixing intensity coupled with ionic strength on the initial stage dynamics of bridging flocculation of polystyrene latex particles with polyelectrolyte"Colloid and Surfaces A. 207. 253-261 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Shinya NAGASAKI, Takumi SAITO, Satoru TANAKA: "Infuluence of Heterogeneity of Binding Sites of Humic Acid on its Complexation withActiny Ions"Journal of Nuclear Science and Technology. 3. 466-472 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 長崎晋也: "フィルトレーション効果を考慮した珪砂充填カラム内におけるフミン酸の移動現象"原子力バックエンド研究. 9. 15-18 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 宮原和己, 大井節男, 中石克也, 足立泰久: "凝集系モンモリロナイト懸濁液の粘土に対する毛細管経の効果"農業土木学会論文集. 223. 63-69 (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] Kazumi Miyahara, Yasuhisa Adachi, Katsuya Nakaishi, Masami Ohtsubo: "Setting velocity of a sodium montmorillonite floc under high ionic strength"Colloids and Surfaces A:. 196. 87-91 (2002)

    • Related Report
      2001 Annual Research Report
  • [Publications] 二重作将雄, 宮原和己, 中石克也, 大井節男: "流動過程におけるカオリナイトフロックの有効体積"粘土科学. (印刷中). (2002)

    • Related Report
      2001 Annual Research Report

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Published: 2001-04-01   Modified: 2016-04-21  

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