Microwave-enhanced thermal removal of organochlorine pesticide (chlordecone) from contaminated soils - BRGM - Bureau de recherches géologiques et minières Accéder directement au contenu
Article Dans Une Revue Chemosphere Année : 2024

Microwave-enhanced thermal removal of organochlorine pesticide (chlordecone) from contaminated soils

Résumé

Soil contamination with chlordecone, an organochlorine pesticide, is causing serious health problems, affecting crop production and local livestock valorization in the French West Indies. In-situ chemical reduction (ISCR) processes for soil remediation have shown promise but need improvement in terms of time, cost and effective treatment, particularly for andosol soil types. Our study shows that a 10-min microwave treatment significantly reduces chlordecone concentrations (50–90%) in contaminated andosol and nitisol soils. Dry andosol soils show the highest removal yields and reach a higher final temperature (350 °C). Microwave treatment is in all cases more effective or at least as effective as 60 min of conventional heating at a target temperature of 200 °C. The thermal response of andosol and nitisol to microwave exposure is different, as the former is likely to undergo thermal runaway, reaching high temperatures in a short time, resulting in highly efficient thermal removal of chlordecone. These results encourage further scale-up, particularly for the treatment of andosol soils due to their strong microwave response.
Fichier non déposé

Dates et versions

hal-04472338 , version 1 (22-02-2024)

Identifiants

Citer

Maxime Cochennec, Yoann Devriendt-Renault, Félix Massat, Thierry Guérin, Patrick Ollivier, et al.. Microwave-enhanced thermal removal of organochlorine pesticide (chlordecone) from contaminated soils. Chemosphere, 2024, pp.141486. ⟨10.1016/j.chemosphere.2024.141486⟩. ⟨hal-04472338⟩

Collections

ANSES BRGM ANR
23 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More