We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Concentrations and Retention Efficiency of Tire Wear Particles from Road Runoff in Bioretention Cells
Summary
Researchers assessed tire wear particle concentrations and retention efficiency in a large-scale bioretention cell and laboratory column experiments, finding particles present across all soil size fractions with higher concentrations near the inlet, and demonstrating that engineered soil bioretention columns achieved 99.6% tire wear particle retention efficiency.
Bioretention cells are popular stormwater management systems for controlling peak runoff and improving runoff water quality. A case study on a functional large-scale bioretention cell and a laboratory column experiment was conducted to evaluate the concentrations and retention efficiency of bioretention cells towards tire wear particles (TWP). The presence of TWP was observed in all soil fractions (<50 µm, 50–100 µm, 100–500 µm, and >500 µm) of the functional bioretention cell. TWP concentrations were higher (30.9 ± 4.1 mg/g) close to the inlet to the bioretention cell than 5 m away (19.8 ± 2.4 mg/g), demonstrating the influence of the bioretention cell design. The column experiment showed a high retention efficiency of TWP (99.6 ± 0.5%) in engineered soil consisting of sand, silty-sand, and garden waste compost. This study confirmed that bioretention cells built with engineered soil effectively retained TWP > 25 µm in size, demonstrating their potential as control measures along roads.