Amount, composition and sources of macrolitter from a highly frequented roadway - Fédération Île-de-France de Recherche sur l’Environnement
Article Dans Une Revue Environmental Pollution Année : 2022

Amount, composition and sources of macrolitter from a highly frequented roadway

Résumé

Many researches mention the need to identify the land-based sources of riverine macrolitter but few field data on litter amount, composition and sources are available in the scientific literature. Describing macrolitter hotspot dynamics would actually allow a better estimation of fluxes in the receiving environments and a better identification of the more appropriate mitigation strategies. This study provides new insights in roadway macrolitter production rates, typologies and input sources (i.e. deliberate or accidental). The macrolitter from an 800 m portion of a highly frequented roadway (around 90,000 vehicles per day) was collected during almost one year. Typologies were defined using the OSPAR / TGML classification. Results show high annual loads of macrolitter (42.8 kg/yr/ha), suggesting significant contributions of the road runoff to the litter fluxes in urban stormwater. Over the course of a year, 88.5 kg of debris were collected, including 53.2 kg (60%) of plastic debris. In total, 36,439 items were characterized, of which 84% were plastics. The macrodebris collected present a low diversity of components with Top 10 items accounting for 92% by count and a majority of small and lightweight items like plastic fragments (31%) or cigarette butts (18%). Input sources were estimated for 43% of the mass collected in which 37.2% were deliberately littered and 62.8% were accidental leaks, illustrating a major contribution of uncovered trucks and unsecured loads. The accumulation rates show a linear correlation with the road traffic. Such data are of prime interest 31 since they enable to determine the potential contribution of road traffic to plastic fluxes to the environment.
Fichier principal
Vignette du fichier
S0269749122003591.pdf (733.01 Ko) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-03614075 , version 1 (22-07-2024)

Licence

Identifiants

Citer

Lauriane Ledieu, Romain Tramoy, Sophie Ricordel, Daniel Astrié, Bruno Tassin, et al.. Amount, composition and sources of macrolitter from a highly frequented roadway. Environmental Pollution, 2022, pp.119145. ⟨10.1016/j.envpol.2022.119145⟩. ⟨hal-03614075⟩
172 Consultations
7 Téléchargements

Altmetric

Partager

More