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61,005 resultsShowing papers similar to Microplastics retained in stormwater control measures: Where do they come from and where do they go?
ClearMicroplastics in urban catchments: Review of sources, pathways, and entry into stormwater
This review examines microplastic sources, transport pathways, and entry mechanisms into urban stormwater systems, identifying atmospheric deposition, tire and road wear particles, and micro-litter as major contributors and highlighting the need for improved source control strategies.
Plastic pollution risks in bioretention systems: a case study
Researchers investigated plastic pollution in urban stormwater bioretention systems and found these green infrastructure features both accumulate microplastics from road runoff and risk leaching plastic particles into groundwater, raising concerns about their role as pollution pathways.
Characterization of microplastics accumulated in sediments of stormwater detention basins, in relation to the land use patterns in the contributing catchment.
Microplastics in stormwater detention basin sediments were characterized and linked to surrounding land use, with roads and residential areas contributing the highest concentrations and most diverse plastic types.
Occurrence and Pathways of Microplastics in Bioretention Filters
Researchers found eleven microplastic polymer types in bioretention filter soil and stormwater samples in an urban setting, characterizing the occurrence and pathways of microplastics entering these green infrastructure systems from contaminated impervious surface runoff.
Control strategies for microplastic pollution in groundwater
This review summarizes how microplastics migrate from soil into groundwater and the strategies available to control this contamination. Researchers found that microplastic concentrations in groundwater vary by region, with factors like soil type and land use influencing how particles travel underground. The study highlights the urgency of developing effective control measures since groundwater is a primary drinking water source for much of the world's population.
Microplastics Characterization in Stormwater: Pavement Source Evaluation and Treatment Efficiency of a Bioretention Cell
Researchers characterised microplastics in stormwater from pavement sources and evaluated the treatment efficiency of a bioretention cell, finding that pavement surfaces contribute substantially to microplastic loading and that bioretention can reduce particle concentrations.
Caractérisation des microplastiques présents dans les sédiments des bassins de retenue des eaux pluviales.
This French-language study characterizes microplastics found in the sediments of stormwater retention basins, which collect runoff from urban and agricultural areas. The findings show that these basins accumulate significant microplastic loads, making them potential hotspots of concentrated plastic pollution.
The Occurrence and Removal of Microplastics from Stormwater Using Green Infrastructure
This review examines microplastic occurrence in urban stormwater and the potential of green infrastructure — particularly bioretention systems and constructed wetlands — to capture and remove plastic particles before they reach surface water bodies.
Contributing to the assessment of the impact of urban activities on microplastic transport through air and runoff infiltration
Researchers investigated the contribution of urban activities to microplastic transport through both airborne pathways and stormwater runoff infiltration, quantifying plastic particle fluxes in an urban watershed. The study found that road surfaces, construction materials, and tire wear were significant urban sources, with rainfall events mobilizing microplastics into both air and subsurface water.
Microplastic Pollution in Stormwater: Preliminary Findings from the Oregon Coast
Researchers collected stormwater samples and analyzed them for microplastic content, providing preliminary findings on particle abundance, types, and size distributions in urban stormwater runoff. The results confirm stormwater as a significant pathway for microplastics from land surfaces into receiving water bodies.
Stormwater runoff microplastics: Polymer types, particle size, and factors controlling loading rates
Researchers characterized microplastics in stormwater runoff samples collected at urban outfall locations. The study identified 17 different polymer types across various storm events, with concentrations around 0.99 particles per liter for the 500-1000 micrometer size range, and found that rainfall intensity and land use were key factors controlling microplastic loading rates.
Microplastics and nanoplastics in stormwater management engineered porous media systems: a systematic review of their sources, transport, retention, and removal characteristics
This systematic review summarizes how engineered stormwater systems like rain gardens and biofilters capture and retain microplastics and nanoplastics. The findings show these systems can effectively reduce plastic particles in stormwater runoff, which matters because untreated stormwater is a major pathway for microplastics to enter the rivers and lakes that supply our drinking water.
Microplastic pollution in sediments of urban rainwater drainage system
Researchers found microplastics in all sediment samples from a university campus rainwater drainage system, with abundances ranging from 80 to 2,610 particles/kg and the highest concentrations in student living areas, suggesting that land use patterns and management practices influence microplastic accumulation in urban stormwater infrastructure.
Analysis of Micropollutants in Urban Water Run-off
This study investigates the quality of urban stormwater runoff, focusing on concentrations of micropollutants including heavy metals and microplastics. The research evaluates how runoff from urban surfaces contaminates both groundwater and surface water, and assesses current stormwater management strategies in cities.
Microplastic sampling strategies in urban drainage systems for quantification of urban emissions based on transport pathways
Researchers developed and applied microplastic sampling strategies across an entire urban municipal catchment under both dry and wet weather conditions, finding that wastewater treatment plants remove over 96% of microplastics but still emit 189 kg per year, while wet-weather emissions from high-traffic subcatchments reached 1,952 grams per population equivalent per year, far exceeding dry-weather levels.
Understanding Microplastic Pollution in Groundwater: Pathways, Health Implications and Solutions
This review examines how microplastics infiltrate groundwater systems through pathways including landfills, agricultural runoff, water treatment facilities, and aging plastic pipes. Researchers found that once in groundwater, microplastics can persist for long periods and degrade water quality while interacting with other subsurface contaminants. The study highlights that groundwater microplastic contamination is an underappreciated threat to one of humanity's most important freshwater sources.
Characteristics and fate of plastic pollution in urban stormwater ponds
This study examined plastic pollution dynamics in urban stormwater retention ponds and found that ponds accumulate significant microplastic loads from stormwater runoff, acting as temporary sinks that can also release particles during high-flow events, challenging the assumption that stormwater infrastructure reduces plastic export to receiving waters.
Change in microplastic concentration during various temporal events downstream of a combined sewage overflow and in an urban stormwater creek
Researchers examined how microplastic concentrations in urban waterways changed during rain events, snowmelt, and combined sewage overflow episodes, finding that stormwater runoff and sewer overflows substantially increase microplastic loads, with event type and intensity influencing concentration patterns.
Estimated discharge of microplastics via urban stormwater during individual rain events
Researchers collected stormwater samples from 15 locations during rain events to assess microplastic discharge through urban runoff. The study found highly variable microplastic concentrations influenced by catchment characteristics, and provided estimates of the quantity of microplastics released to receiving waters during rain events, highlighting urban stormwater as an important pathway for microplastic pollution.