Assessment of the PCDD/F fate from MSWI residue used in road construction in France

Rabia Badreddine (1) , Denis Francois (2)

1 INERIS - Institut National de l'Environnement Industriel et des Risques
2 LCPC/EAU - Division Eau et Environnement

MSWI fly ash is susceptible to contain high amount of polychlorinated dibenzo-dioxins and polychlorinated dibenzo-furans. However, the use of MSWI residue for road construction started in France at a period when MSWI Bottom Ash and MSWI fly ash were not separated. From four old road sites, MSWI residue, road soils, reference soils and geo-textiles were sampled and their PCDD/F contents were analyzed. MSWI residue show a great heterogeneity but also high amounts of PCDD/F (142960 ng ITEQ kg-1 dm). Soils underlying the road show less heterogeneity and PCDD/F contents between 0.57 and 7.23 ng I-TEQ kg-1 dm, lower than ordinary soils. Moreover, the specific analysis of the 17 toxic PCDD/F congeners (notably the 2,3,7,8-TetraCDD) indicates the very low harmfulness of road soils. The study also allows to assert the relation between the MSWI residue particle size and the PCDD/F content.

Mots clés: CENDRE D'INCINERATION; PARTICULE; POLLUANT; POLLUTION DES SOLS; CHAUSSEE; MATERIAU RECYCLE

Domaines: Matériaux; Milieux et Changements globaux

Rabia Badreddine, Denis Francois. Assessment of the PCDD/F fate from MSWI residue used in road construction in France. Chemosphere, 2009, 74 (3), pp 363-369. ⟨10.1016/j.chemosphere.2008.09.028⟩. ⟨hal-00425414⟩