Article
?
AI-assigned paper type based on the abstract. Classification may not be perfect — flag errors using the feedback button.
Tier 2
?
Original research — experimental, observational, or case-control study. Direct primary evidence.
Environmental Sources
Remediation
Sign in to save
Removal and release of microplastics and other environmental pollutants during the start-up of bioretention filters treating stormwater
Journal of Hazardous Materials2024
27 citations
?
Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count.
Score: 55
?
0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.
Yvonne Andersson‐Sköld
Glenn Johansson,
Glenn Johansson,
Glenn Johansson,
Glenn Johansson,
Yvonne Andersson‐Sköld
Ann‐Margret Strömvall,
Ann‐Margret Strömvall,
Glenn Johansson,
Ann‐Margret Strömvall,
Ann‐Margret Strömvall,
Glenn Johansson,
Ann‐Margret Strömvall,
Glenn Johansson,
Glenn Johansson,
Glenn Johansson,
Glenn Johansson,
Oskar Modin,
Karin Karlfeldt Fedje,
Ann‐Margret Strömvall,
Glenn Johansson,
Glenn Johansson,
Karin Karlfeldt Fedje,
Karin Karlfeldt Fedje,
Ann‐Margret Strömvall,
Karin Karlfeldt Fedje,
Oskar Modin,
Ann‐Margret Strömvall,
Ann‐Margret Strömvall,
Yvonne Andersson‐Sköld
Marie Haeger‐Eugensson,
Oskar Modin,
Oskar Modin,
Ann‐Margret Strömvall,
Ann‐Margret Strömvall,
Marie Haeger‐Eugensson,
Karin Karlfeldt Fedje,
Yvonne Andersson‐Sköld
Karin Karlfeldt Fedje,
Ann‐Margret Strömvall,
Ann‐Margret Strömvall,
Ann‐Margret Strömvall,
Oskar Modin,
Oskar Modin,
Ann‐Margret Strömvall,
Ann‐Margret Strömvall,
Ann‐Margret Strömvall,
Ann‐Margret Strömvall,
Ann‐Margret Strömvall,
Yvonne Andersson‐Sköld
Oskar Modin,
Wolfgang Uhl,
Ann‐Margret Strömvall,
Ann‐Margret Strömvall,
Ann‐Margret Strömvall,
Ann‐Margret Strömvall,
Ann‐Margret Strömvall,
Ann‐Margret Strömvall,
Karin Karlfeldt Fedje,
Karin Karlfeldt Fedje,
Ann‐Margret Strömvall,
Oskar Modin,
Ann‐Margret Strömvall,
Yvonne Andersson‐Sköld
Yvonne Andersson‐Sköld
Oskar Modin,
Ann‐Margret Strömvall,
Yvonne Andersson‐Sköld
Ann‐Margret Strömvall,
Marie Haeger‐Eugensson,
Ann‐Margret Strömvall,
Ann‐Margret Strömvall,
Marie Haeger‐Eugensson,
Marie Haeger‐Eugensson,
Ann‐Margret Strömvall,
Yvonne Andersson‐Sköld
Marie Haeger‐Eugensson,
Yvonne Andersson‐Sköld
Yvonne Andersson‐Sköld
Yvonne Andersson‐Sköld
Yvonne Andersson‐Sköld
Summary
This study tested bioretention filters designed to clean stormwater runoff and found they effectively removed microplastics larger than 10 micrometers. However, during the initial start-up period, some filter materials actually released microplastics and other pollutants, highlighting the importance of a break-in phase before these systems work as intended.
Untreated stormwater is a major source of microplastics, organic pollutants, metals, and nutrients in urban water courses. The aim of this study was to improve the knowledge about the start-up periods of bioretention filters. A rain garden pilot facility with 13 bioretention filters was constructed and stormwater from a highway and adjacent impervious surfaces was used for irrigation for ∼12 weeks. Selected plants (Armeria maritima, Hippophae rhamnoides, Juncus effusus, and Festuca rubra) was planted in ten filters. Stormwater percolated through the filters containing waste-to-energy bottom ash, biochar, or Sphagnum peat, mixed with sandy loam. Influent and effluent samples were taken to evaluate removal of the above-mentioned pollutants. All filters efficiently removed microplastics >10 µm, organic pollutants, and most metals. Copper leached from all filters initially but was significantly reduced in the biochar filters at the end of the period, while the other filters showed a declining trend. All filters leached nutrients initially, but concentrations decreased over time, and the biochar filters had efficiently reduced nitrogen after a few weeks. To conclude, all the filters effectively removed pollutants during the start-up period. Before being recommended for full-scale applications, the functionality of the filters after a longer period of operation should be evaluated.