4.7 Article

Effects of thermal desorption on the composition of two coking plant soils: Impact on solvent extractable organic compounds and metal bioavailability

Journal

ENVIRONMENTAL POLLUTION
Volume 156, Issue 3, Pages 671-677

Publisher

ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2008.06.020

Keywords

Industrial wastelands; Extractable organic matter; Polycyclic aromatic hydrocarbons; Metals; Thermal desorption

Funding

  1. French government
  2. Conseil Regional de Lorraine
  3. CNRS
  4. ECCO research program
  5. Federation Est
  6. GISFI

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To evaluate the efficiency and the influence of thermal desorption on the soil organic compartment, contaminated soils from coking plant sites (NM and H) were compared to their counterparts treated with thermodesorption. The extractable organic matter, and the metal content and distribution with soil compartments were studied. In both thermodesorbed soils, PAH (polycyclic aromatic hydrocarbon) degradation exceeded 90%. However, the thermal desorption led not only to a volatilization of the organic compounds but also to the condensation of extractable organic matter. The treatments only affected the Fe and Zn distribution within the more stable fractions, whereas the organic compound degradation did not affect their mobility and availability. (C) 2008 Elsevier Ltd. All rights reserved.

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