Soil decontamination

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The process of removing hazardous contaminants (such as pesticides, herbicides, solvents, petroleum residues, etc.) from naturally occurring soil. These contaminants are physically or chemically attached to the soil particles or found within the small spaces between the soil particles. Soil decontamination may be carried out by physical, chemical or biological treatments.

  • Physical treatment methods include flushing contaminants out of the soil using water, chemical solvents or air.
  • Chemical treatment is carried out by addition of chemicals to the soil to render the contaminants harmless or to encapsulate them thus preventing them from spreading. Treatment may be carried out in-situ or by excavating the soil for plant treatment.
  • Biological treatment methods include the use of natural organisms to break down the contaminants.

See also

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