Which among the following is NOT an example of In-situ bioremediation techniques?

Which among the following is NOT an example of In-situ bioremediation techniques? Correct Answer Biopiles

The Correct Answer is Option 4 i.e Biopiles.

  • In situ bioremediation techniques:
    • It involves the treatment of the contaminated material at the site.
    • Example: Bioventing, Biosparging, Bioaugmentation.
  • Ex Situ bioremediation techniques:
    • It involves the removal of the contaminated material to be treated elsewhere.
    • Example: Landfarming, Biopiles, Bioreactors, Composting.
  • Bioventing: Supply of air and nutrients through wells to contaminated soil to stimulate the growth of indigenous bacteria.
  • Biosparging: Injection of air under pressure below the water table to increase groundwater oxygen concentrations and enhance the rate of biological degradation of contaminants by naturally occurring bacteria.
  • Bioaugmentation: Microorganisms are imported to a contaminated site to enhance the degradation process.
  • Biopiles: It is a hybrid of landfarming and composting. Typically used for the treatment of surface contamination with petroleum hydrocarbons.

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