Retention and transport processes of particulate and dissolved micropollutants in stormwater biofilters treating road runoff
Open accessAbstract
Road runoff is contaminated by various micropollutants and may be treated using low impact development techniques, such as stormwater biofilters. Better understanding the processes, such as filtration, sorption and leaching, which affect pollutants in these systems is essential to reliably predicting treatment performance and optimizing system design. Field data from an in situ monitoring campaign, wherein dissolved and particulate concentrations of a wide range of micropollutants (trace metals, polycyclic aromatic hydrocarbons, bisphenol-A, alkylphenols and phthalates) were characterized in untreated road runoff and biofilter outlets for 19 rain events, are used to explore transport and retention processes. Although retention of the particulate phase of pollutants was generally quite effective, unusually high particle concentrations were observed at biofilter outlets for three winter events. Particle characterization in road runoff and outlet waters revealed that this degraded performance was due to poor filtration rather than particle erosion, which was attributed to the relative abundance of small (<10 μm) particles during this period, along with possible preferential flows. Dissolved pollutants were less effectively removed in general. To better understand this behavior, field results were combined with laboratory sorption and leaching tests. Dissolved concentrations of trace metals were shown to be influenced by organic carbon; leaching from road-originated particles may…
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Dissolved metals are more difficult to remove and usually more bioavailable compared to particulate metals, thereby posing a greater risk.
“Although dissolved metals are more difficult to remove and usually more bioavailable compared to particulate metals, thereby posing a greater risk (Fassman et al., 2013; Flanagan et al., 2019), bioretention studies have generally focused on total metal removal (Hunt et al., 2012).”
From Dissolved metal adsorption capacities and fractionation in filter materials for use in stormwater bioretention facilities (2019) · cites this paper as Flanagan et al., 2019
Cites
Assessment of metal and PAH profiles in SUDS soil based on an improved experimental procedure
Tedoldi, D., Chebbo, G., Pierlot, D., Kovacs, Y., & Gromaire, M.-C. (2017) · Journal of Environmental Management · doi:10.1016/j.jenvman.2017.06.063 · Cited by 33 · see citing works
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Spahr, S., Teixidó, M., Sedlak, D. L., & Luthy, R. G. (2020) · Environmental Science: Water Research & Technology · doi:10.1039/c9ew00674e · Cited by 153 · see citing works
Gasperi, J., Le Roux, J., Deshayes, S., Ayrault, S., Bordier, L., Boudahmane, L., Budzinski, H., Caupos, E., Caubrière, N., Flanagan, K., et al. (2022) · Water · doi:10.3390/w14030394 · Cited by 48 · see citing works
Self-citationSøberg, L. C., Winston, R., Viklander, M., & Blecken, G.-T. (2019) · Water Research X · doi:10.1016/j.wroa.2019.100032 · Cited by 47 · see citing works
“Although dissolved metals are more difficult to remove and usually more bioavailable compared to particulate metals, thereby posing a greater risk (Fassman et al., 2013; Flanagan et al., 2019), bioretention studies have generally focused on total metal removal (Hunt et al.”
Background
- Authors
- Flanagan, K., Branchu, P., Boudahmane, L., Caupos, E., Demare, D., Deshayes, S., Dubois, P., Meffray, L., Partibane, C., Saad, M., & Gromaire, M.-C.
- Affiliations
- École nationale des ponts et chaussées (FR)
- Centre d'Études et d'Expertise sur les Risques, l'Environnement, la Mobilité et l'Aménagement (FR)
- Nantes Université (FR)
- Corresponding author
- Flanagan, Kelsey
- Venue
- Science of The Total Environment
- Publisher
- Elsevier BV
- Published
- 2019-03
- Volume
- 656
- Pages
- 1178-1190
- ISSN
- 0048-9697 (ISSN-L)
- OpenAlex
- W2900699896
- Cited by
- 60
- References
- 1
- Citations by year
- 2026: 2 · 2025: 12 · 2024: 6 · 2023: 7 · 2022: 9 · 2021: 6 · 2020: 8 · 2019: 10
- FWCI
- 3.02
- Type
- journal article
- Language
- en
- Open access
- green
- enpc.hal.science
- Licence
- Locations
- The Science of The Total Environment (publishedVersion)
- PubMed (publishedVersion)
- HAL (submittedVersion, other-oa)
- Funders
- AESN
- SIAAP
- CD92
- CD93
- CD94
- Ville de Paris
- AFB
- Agence de l'Eau Seine-Normandie
- Topics
- Physical Sciences › Environmental Science › Environmental Engineering › Urban Stormwater Management Solutions
- Physical Sciences › Environmental Science › Pollution › Pharmaceutical and Antibiotic Environmental Impacts
- Physical Sciences › Environmental Science › Waste Management and Disposal › Wastewater Treatment and Reuse
- Keywords
- stormwater biofilters, road runoff, micropollutants, filtration, sorption, leaching, trace metals, polycyclic aromatic hydrocarbons, bisphenol A, alkylphenols, phthalates, low impact development, preferential flow, organic carbon, particle size
- MeSH terms
- Filtration, France, Rain, Water Pollutants, Chemical, Particulate Matter
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