Soil Remediation

New method for in situ remediation of polycyclic aromatic hydrocarbons (PAH) in soils

The technology developed uses vegetable oils for the extraction of polycyclic aromatic hydrocarbons from soils. Virtually 100% decontamination has been achieved in the laboratory. In order to allow the reuse of vegetable oil, adsorption of polycyclic aromatic hydrocarbons using activated carbon is recommended. 

 

Summary

Aim of the work was to set up the presumptions for a new method for in situ remediation of polycyclic aromatic hydrocarbons (PAH) contaminated sites.

This technique is based an the extraction of PAH from the soil by use of plant oils.

Results:

  • The analytical detection of PAH in plant oils was developed and optimised. In lab scale a more or less complete removal of PAH from contaminated soils was shown.
  • By use of plant oils PAH could be effectively extracted from sandy and clay soils. Residual amounts of PAH and plant oil could be degraded microbiologically.
  • No negative ecotoxicological effects on plant, terrestic and aquatic tests were observed after soil extraction.
  • The removal of PAH from plant oil is easily performed by conventional adsorption with activated carbon. The use of so treated plant oil for PAH extraction from soil gives the same results as fresh plant oil.

Project Participants

Implementing Institution

ARGUS Umweltbiotechnologie GmbH

More Project Informations

Project title:  New method for in situ remediation of polycyclic aromatic hydrocarbons (PAH) in soils

Project number:  0291156

Project period:  1999 - 2001

Project region:  Germany (Berlin)

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Source:  German National Library of Science and Technology Hannover (TIB)