TY - JOUR
T1 - Permeable pavements
T2 - A possible sink for tyre wear particles and other microplastics?
AU - Rasmussen, Lasse Abraham
AU - Lykkemark, Jeanette
AU - Andersen, Theis Raaschou
AU - Vollertsen, Jes
N1 - Funding Information:
This study was co-funded by Lemvig Vand A/S, NCC Industry A/S, Coast to Coast Climate Challenge, and VIA University College. We gratefully acknowledge NCC Industry A/S for collecting the samples and Lemvig Vand A/S for designing and constructing the sedimentation tank.
Publisher Copyright:
© 2023 The Authors
PY - 2023/4/15
Y1 - 2023/4/15
N2 - In this study, seven roads and parking lots were sampled by a road surface cleaning truck and approximately 100 kg of particulate material was collected per site. Thereafter, the samples were analysed for microplastics, including tyre wear particles. The analyses revealed that tyre wear constituted 0.09 % of the dry mass of the samples on average. Other plastic types were also identified in the samples, but at on average 49 times lower concentrations compared to tyre wear particles. Although the roads and parking lots were used for residential, industrial, and commercial purposes, no correlation between land use and the total concentrations of microplastics was identified. Of microplastics other than tyre wear particles, polypropylene constituted an important fraction in all samples, whereas other polymers were present at various degrees. The contents of heavy metals, sulphur, and total organic carbon were also measured in the samples, but no correlation between them and microplastics was determined. A back-of-the-envelope estimation indicated that the tyre wear material retained by permeable pavements constituted a non-negligible fraction of the total mass of microplastics released on roads and parking lots. Therefore, permeable pavements can serve as a tool for the management of this pollutant.
AB - In this study, seven roads and parking lots were sampled by a road surface cleaning truck and approximately 100 kg of particulate material was collected per site. Thereafter, the samples were analysed for microplastics, including tyre wear particles. The analyses revealed that tyre wear constituted 0.09 % of the dry mass of the samples on average. Other plastic types were also identified in the samples, but at on average 49 times lower concentrations compared to tyre wear particles. Although the roads and parking lots were used for residential, industrial, and commercial purposes, no correlation between land use and the total concentrations of microplastics was identified. Of microplastics other than tyre wear particles, polypropylene constituted an important fraction in all samples, whereas other polymers were present at various degrees. The contents of heavy metals, sulphur, and total organic carbon were also measured in the samples, but no correlation between them and microplastics was determined. A back-of-the-envelope estimation indicated that the tyre wear material retained by permeable pavements constituted a non-negligible fraction of the total mass of microplastics released on roads and parking lots. Therefore, permeable pavements can serve as a tool for the management of this pollutant.
KW - FTIR
KW - Microplastics
KW - Permeable pavement
KW - Py-GC/MS
KW - Road dust
KW - Tyre wear particle
UR - http://www.scopus.com/inward/record.url?scp=85147195391&partnerID=8YFLogxK
U2 - 10.1016/j.scitotenv.2023.161770
DO - 10.1016/j.scitotenv.2023.161770
M3 - Journal article
C2 - 36708844
AN - SCOPUS:85147195391
SN - 0048-9697
VL - 869
JO - Science of the Total Environment
JF - Science of the Total Environment
M1 - 161770
ER -