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2004 Fiscal Year Final Research Report Summary

Effect of surfactant on infiltration in soils

Research Project

Project/Area Number 14560198
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Irrigation, drainage and rural engineering/Rural planning
Research InstitutionOkayama University

Principal Investigator

ISHIGURO Munehide  Okayama University, Faculty of Environ. Sci. and Tech., Associate Prof. (00294439)

Project Period (FY) 2002 – 2004
KeywordsCapillary rise / Contact angle / Infiltration / Anionic surfactant / Surface tension / Saturated hydraulic conductivity / Suction
Research Abstract

Surfactants are used in detergents, shampoos, chemical fertilizers, agricultural chemicals, and the like, and a large amount of the surfactants has been discharged to the environment. Surfactants are also used for contaminated soil washing and amelioration of soil-water repellency. However, their influence on the soil environment is not fully understood. In this study, we investigated the influence of an anionic surfactant on water infiltration. Sodium dodecyl sulfate (SDS) solutions of different concentrations were infiltrated by capillary rise into dry material columns. We proposed a capillary rise equation and used it to explain the influence of SDS. In glass beads and sand, which are hydrophilic inorganic materials, the infiltration rate decreased as the SDS concentration increased due to the decrease of the surface tension of the solution. In polyethylene particles and peat moss, which are hydrophobic organic materials, the infiltration rate increased as the SDS concentration increased because of the decrease in the contact angle and the surface tension. In the case of leaf mold, the infiltration rate decreased as the SDS concentration increased due to the decrease of the saturated hydraulic conductivity caused by swelling. Interfacial phenomena clearly affected the infiltration rate into the soils.

  • Research Products

    (8 results)

All 2005 2004 2003

All Journal Article (4 results) Book (4 results)

  • [Journal Article] 土・多孔質体中の毛管上昇浸潤に及ぼすアニオン界面活性剤溶液濃度の影響2005

    • Author(s)
      石黒宗秀・藤井和知・赤江剛夫
    • Journal Title

      農業土木学会論文集 第236号

      Pages: 53-59

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Capillary Rise Infiltration into Soils and Porous Media as Affected by an Anionic Surfactant Concentration2005

    • Author(s)
      Ishiguro, M., Fujii, T., Akae, T
    • Journal Title

      Transactions of JSIDRE 236

      Pages: 53-59

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] 有機及び無機土壌・多孔質体中への毛管上昇浸潤と高濃度アニオン界面活性剤溶液の作用2004

    • Author(s)
      石黒宗秀・藤井和知
    • Journal Title

      農業土木学会論文集 第230号

      Pages: 85-90

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Capillary Rise in Organic and Inorganic Soils and Porous Media, and Effect of High Concentrate Anionic Surfactant Solution2004

    • Author(s)
      Ishiguro, M., Fujii, T
    • Journal Title

      Transactions of JSIDRE 230

      Pages: 85-90

    • Description
      「研究成果報告書概要(欧文)」より
  • [Book] 表面・界面工学大系 下巻2005

    • Author(s)
      廣川 一男
    • Total Pages
      1361
    • Publisher
      テクノシステム
    • Description
      「研究成果報告書概要(和文)」より
  • [Book] Compendium of Surface-Interface Engineering, Book 22005

    • Author(s)
      Hirokawa, K
    • Total Pages
      1361
    • Publisher
      Techno-System ; Tokyo
    • Description
      「研究成果報告書概要(欧文)」より
  • [Book] 土のコロイド現象2003

    • Author(s)
      足立 泰久, 岩田 進午
    • 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
  • [Book] Soil Colloidal Phenomena2003

    • Author(s)
      Adachi, Y., Iwata, S
    • Total Pages
      451
    • Publisher
      Japan Scientific Societies Press : Tokyo
    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2010-02-04  

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