Assessment of the PCDD/F fate from MSWI residue used in road construction in France.
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 (14-2960 ng I-TEQ 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.
Badreddine
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INERIS, DRC/DESP, Parc Technologique Alata BP 2, 60550 Verneuil-en-Halatte, France. rabia.badreddine@ineris.fr
François
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D001572:Benzofurans / Q000032:analysis* / Q000633:toxicity; D002244:Carbon / Q000737:chemistry*; D060729:Coal Ash; D003252:Construction Materials / Q000032:analysis* / Q000633:toxicity; D005602:France; D017745:Incineration; D010316:Particle Size; D052638:Particulate Matter / Q000032:analysis* / Q000737:chemistry; D000072317:Polychlorinated Dibenzodioxins / Q000031:analogs & derivatives* / Q000032:analysis / Q000633:toxicity; D018570:Risk Assessment; D014186:Transportation
D001572:Benzofurans; D060729:Coal Ash; D052638:Particulate Matter; D000072317:Polychlorinated Dibenzodioxins; D002244:Carbon