Encyclopedia of Applied Electrochemistry

2014 Edition
| Editors: Gerhard Kreysa, Ken-ichiro Ota, Robert F. Savinell

Electrokinetic Transport in Soil Remediation

Reference work entry
DOI: https://doi.org/10.1007/978-1-4419-6996-5_120

Transport Mechanisms in Electrokinetic Remediation

Electrokinetic remediation is an environmental technique especially developed for the removal of contaminants in soil, sediments, and sludge, although it can be applied to any solid porous material. Electrokinetic remediation is based on the application of a direct electric current of low intensity to the porous matrix to be decontaminated [ 1]. The effect of the electric field induces the mobilization and transportation of contaminants through the porous matrix towards the electrodes, where they are collected, pumped out, and treated. Main electrodes, anode and cathode, are inserted into the soil matrix, normally inside a chamber which is filled with water or the appropriate solution to enhance the removal of contaminants (Fig. 1). Typically, a voltage drop of 1 VDC/cm is applied.
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  1. 1.
    Acar YB, Alshawabkeh AN (1993) Principles of electrokinetic remediation. Environ Sci Technol 27(13):2638–2647Google Scholar
  2. 2.
    Acar YB, Gale RJ, Putnam GA, Hamed J, Wong RL (1990) Electrochemical processing of soils: theory of pH gradient development by diffusion, migration, and linear convection. J Environ Sci Health Part A Environ Sci Eng 25(6):687–714Google Scholar
  3. 3.
    Acar YB, Gale RJ, Alshawabkeh AN, Marks RE, Puppala S, Bricka M, Parker R (1995) Electrokinetic remediation: basics and technology status. J Hazard Mater 40(2):117–137Google Scholar
  4. 4.
    Jacobs RA, Sengun MZ, Hicks RE, Probstein RF (1994) Model and experiments on soil remediation by electric fields. J Environ Sci Health Part A Environ Sci Eng 29(9):1933–1955Google Scholar
  5. 5.
    Alshawabkeh AN, Acar YB (1992) Removal of contaminants from soils by electrokinetics: a theoretical treatise. J Environ Sci Health Part A Environ Sci Eng 27(7):1835–1861Google Scholar
  6. 6.
    Probstein RF, Hicks RE (1993) Removal of contaminants from soils by electric fields. Science 260(5107):498–503Google Scholar
  7. 7.
    Maturi K, Reddy KR (2008) Cosolvent-enhanced desorption and transport of heavy metals and organic contaminants in soils during electrokinetic remediation. Water Air Soil Pollut 189(1–4):199–211Google Scholar
  8. 8.
    Saichek RE, Reddy KR (2005) Electrokinetically enhanced remediation of hydrophobic organic compounds in soils: a review. Crit Rev Environ Sci Technol 35(2):115–192Google Scholar
  9. 9.
    Reddy KR, Chaparro C, Saichek RE (2003) Iodide-enhanced electrokinetic remediation of mercury-contaminated soils. J Environ Eng 129(12):1137–1148Google Scholar
  10. 10.
    Reddy KR, Darko-Kagya K, Cameselle C (2011) Electrokinetic-enhanced transport of lactate-modified nanoscale iron particles for degradation of dinitrotoluene in clayey soils. Sep Purif Technol 79(2):230–237Google Scholar

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© Springer Science+Business Media New York 2014

Authors and Affiliations

  1. 1.Department of Chemical EngineeringUniversity of VigoVigoSpain