• Zhen (Leo) Liu


Electrokinetics includes a family of phenomena resulting from the distributions of charges and electric potentials at interfaces between different phases. In porous materials, these two phases primarily refer to the solid phase such as clay particles and the liquid phase such as water. In this chapter, we will first discuss the double layer theory, which sets the basis for understanding the electrokinetic phenomena. Then three sections will be devoted to electroosmosis, electromigration, and electrophoresis for the transport of water, free ions, and charged particles in soils, respectively, under the influence of an external electric field. Later, we will combine these theories into a complete framework for considering these three major types of electrokinetic phenomena. A practice problem developed based on a lab test will be introduced in the last section.


Electrokinetics Double layer DLVO theory Electroosmosis Electromigration Electrophoresis Transport Electric field Soils 


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Authors and Affiliations

  • Zhen (Leo) Liu
    • 1
  1. 1.Michigan Technological UniversityHoughtonUSA

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