Litter in French urban areas — Part 2: transport dynamic and fluxes in stormwater - Université Gustave Eiffel Access content directly
Journal Articles Environmental Science and Pollution Research Year : 2024

Litter in French urban areas — Part 2: transport dynamic and fluxes in stormwater

Lauriane Ledieu
David Mabilais
  • Function : Author
  • PersonId : 1308891
Sophie Ricordel
  • Function : Author
  • PersonId : 1308892
Marie-Laure Mosini
  • Function : Author
  • PersonId : 1308893
Alexandra Mosset
  • Function : Author
  • PersonId : 1308894
Bernard Flahaut
  • Function : Author
  • PersonId : 1308895
Laetitia Pineau
  • Function : Author
  • PersonId : 1308896
Eric Bouchet
  • Function : Author
Clémence Bruttin
  • Function : Author
Johnny Gasperi

Abstract

Urban areas constitute a major hotspot of litter, including plastic litter, that stormwater can wash off towards waterways. However, few studies quantified and characterized litter densities in urban areas and fluxes transported by stormwater networks. Moreover, little information is available on litter transport dynamics in stormwater, and on the factors driving this transport. This study aims at characterizing and quantifying litter amounts transported by stormwater of two nested French urban catchments (total surface area of 105 ha). Litter densities relative to land uses and rain events were investigated in the same catchments as in a compagnon paper (Ledieu et al., 2024). The present study explores the impact of rain events on the transport of urban litter in stormwater. Litter collection and characterization combined with a capture/recapture experiment using tagged litter placed in stormwater inlets show total litter fluxes of 29 kg/year, in which 14 kg/year are plastics, exported at the stormwater outlet. These fluxes confirm that stormwater runoff is a considerable pathway from urban surfaces to waterways, especially regarding small plastic litter (< 2.5 cm). Item transport dynamic is however not linear and only 0.3% of the urban litter appear remobilized. Litter transport dynamics depends on several factors (urban litter densities, hydrometeorological parameters, item composition and morphologies, and stormwater management systems) that should be considered in global models.
No file

Dates and versions

hal-04599474 , version 1 (03-06-2024)

Identifiers

Cite

Lauriane Ledieu, Romain Tramoy, David Mabilais, Sophie Ricordel, Marie-Laure Mosini, et al.. Litter in French urban areas — Part 2: transport dynamic and fluxes in stormwater. Environmental Science and Pollution Research, 2024, ⟨10.1007/s11356-024-33774-0⟩. ⟨hal-04599474⟩
0 View
0 Download

Altmetric

Share

Gmail Mastodon Facebook X LinkedIn More