Suspended sediments mediate microplastic sedimentation in unidirectional flows DOI Creative Commons
Mirco Mancini, Teresa Serra, Jordi Colomer

et al.

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 890, P. 164363 - 164363

Published: May 20, 2023

Microplastic particles (MP) are an emerging contaminant threatening many aquatic systems. Because of the sharp increase in plastic manufacture, concentration MP natural ecosystems has grown dramatically. While it is known that when enter they transported and dispersed via different mechanisms (currents, waves, turbulence), processes involved still poorly understood. In current study, transport by a unidirectional flow been investigated laboratory flume. system through plume can (or not) have suspended sediment. The interaction between sediment was studied for three particle types (Polyamide (PA) Polyvinyl Chloride (PVC) fragments, Polyethylene Terephthalate (PET) fibers), four concentrations (0 g/l, 15 30 g/l 45 g/l). all cases, increased vertical to bottom. greater concentration, downward flux MP. Sediment scavenged PA fragments downwards at highest rate, followed PET fibers finally PVC fragments. These results indicate particle-laden carrying may induce differential settling as advected. scavenging sediments result sedimentation segregated patterns, with being found shorter distances than expected case without sediment, therefore increasing presence near their sources.

Language: Английский

Environmental fate of microplastics in the world's third-largest river: Basin-wide investigation and microplastic community analysis DOI
Wenke Yuan, Joseph A. Christie‐Oleza, Elvis Genbo Xu

et al.

Water Research, Journal Year: 2021, Volume and Issue: 210, P. 118002 - 118002

Published: Dec. 24, 2021

Language: Английский

Citations

197
Recent advances on the transport of microplastics/nanoplastics in abiotic and biotic compartments DOI
Danlian Huang, Haojie Chen, Maocai Shen

et al.

Journal of Hazardous Materials, Journal Year: 2022, Volume and Issue: 438, P. 129515 - 129515

Published: July 2, 2022

Language: Английский

Citations

103
Environmental behaviors and degradation methods of microplastics in different environmental media DOI

Binbin Xi,

Bing Wang, Miao Chen

et al.

Chemosphere, Journal Year: 2022, Volume and Issue: 299, P. 134354 - 134354

Published: March 16, 2022

Language: Английский

Citations

100
Microplastic distribution in the surface water and sediment of the Ergene River DOI
Zeynep Akdoğan,

Başak Güven,

Ahmet E. Kıdeyş

et al.

Environmental Research, Journal Year: 2023, Volume and Issue: 234, P. 116500 - 116500

Published: June 24, 2023

Language: Английский

Citations

68
Plastics in the global environment assessed through material flow analysis, degradation and environmental transportation DOI Creative Commons
Anna Schwarz,

S.M.C. Lensen,

E. Langeveld

et al.

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 875, P. 162644 - 162644

Published: March 7, 2023

Knowledge on environmental plastic emission and spatial temporal accumulation is vital for the development of successful mitigation strategies risk assessments plastics. In this study, emissions both micro macro from value chain to environment were assessed a global level through mass flow analysis (MFA). All countries, 10 sectors, 8 polymers 7 compartments (terrestrial, freshwater or oceanic) are distinguished in model. The results assess loss 0.8 million tonnes (mt) microplastics 8.7 mt macroplastics 2017. This respectively 0.2 % 2.1 plastics produced same year. packaging sector contributed most macroplastic emissions, tyre wear microplastic emissions. With MFA results, accumulation, degradation transportation considered Accumulation dispersion model (ADM) until 2050. predicts macro- 2.2 gigatonnes (Gt) 3.1 Gt 2050 (scenario: yearly consumption increase 4 %). will be 30 less when production reduction 1 modeled 1.5 2.3 respectively. Almost 2.15 accumulate with zero after 2022 due leakage landfills processes. Results compared other modeling studies quantifying environment. current study lower ocean higher surface waters like lakes rivers. Non aquatic, terrestrial observed emitted approach used flexible adaptable that addresses over time space, detail country compartments.

Language: Английский

Citations

67
A framework for systematic microplastic ecological risk assessment at a national scale DOI
Yifei Qiu, Shenglü Zhou, Chuchu Zhang

et al.

Environmental Pollution, Journal Year: 2023, Volume and Issue: 327, P. 121631 - 121631

Published: April 12, 2023

Language: Английский

Citations

52
Quantifying microplastic dispersion due to density effects DOI Creative Commons
Ben Stride, Soroush Abolfathi, Gary D. Bending

et al.

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 466, P. 133440 - 133440

Published: Jan. 6, 2024

An experimental study was conducted on how polymer density affects the transport and fate of microplastics in aquatic flows. For first time, polypropylene (PP), polyethylene (PE), polymethyl methacrylate (PMMA), polyetheretherketone (PEEK), polyvinyl chloride (PVC) were chemically stained tested using solute techniques velocities found among rivers natural environment (0.016 – 0.361 m/s). The movement 3D-polymers with densities ranging from 0.9 1.4 g/cm³ quantified a laboratory flume scaled to simulate open-channel flows fluvial systems. Except for PP, most conditions exhibited similar characteristics solutes regardless established models successfully implemented predict their fate. Mass recoveries ADE routing model demonstrated microplastic deposition resuspension associated below critical velocity thresholds ≤ 0.1 m/s. When becomes dominant force at these slower velocities, concentrations denser than water will be momentarily or permanently deposited channel beds follow classical Shields sediment methodology. This data is provide suspension based river density, making key contribution research predicting organismal exposure. Microplastics are emerging contaminants that ubiquitous Given size, have increased bioavailability all organisms can exposed through direct ingestion, indirect ingestion via prey items, respiration. act as pathway disease-carrying pathogens many questions remain toxicity. Microplastic systems unknown thereby which experience aims reduce knowledge gap currently particle properties affect flows, ultimately help remediate impact environment.

Language: Английский

Citations

38
Why Nigeria should ban single-use plastics: Excessive microplastic pollution of the water, sediments and fish species in Osun River, Nigeria DOI Creative Commons
Gideon Aina Idowu,

Adewumi Yetunde Oriji,

Kehinde Oluwasiji Olorunfemi

et al.

Journal of Hazardous Materials Advances, Journal Year: 2024, Volume and Issue: 13, P. 100409 - 100409

Published: Jan. 25, 2024

The Osun River serves as a source of drinking and domestic water for some communities in State Nigeria, addition to providing "healing water" the worshippers goddess. sacred river has earned status UNESCO world heritage centre worldwide attention it receives, result yearly Osun-Oshogbo worship festival. In this study, an initial investigation microplastic pollution water, sediments fish species was conducted. Abundance microplastics samples, at maximum 22,079 ± 134 particles/litre, represents highest reported so far globally. FTIR analyses revealed seven polymer materials, including acrylonitrile butadiene styrene (ABS) ethylene vinyl acetate (EVA), that have not been commonly environments. Microplastics ranged from 407 244 1691.7 443 particles gastro-intestinal tract (GIT) six analysed, with silver catfish (Chrysichthys nigrodigitatus) having concentration. Levels fishes are higher than those Asia Europe, but similar other plastic hotspots Africa. This study recognizes uncontrolled indiscriminate disposal single-use plastics key factor level river. We emphasize need by Nigerian government ban certain plastics, step towards reducing rivers, shelter important provide religious purposes.

Language: Английский

Citations

30
The processes and transport fluxes of land-based macroplastics and microplastics entering the ocean via rivers DOI
Teng Wang, Hong Liao, Huahong Shi

et al.

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 466, P. 133623 - 133623

Published: Jan. 26, 2024

Language: Английский

Citations

29
Distribution and risk assessment of microplastics in a source water reservoir, Central China DOI Creative Commons

Minghui Shen,

Yang Li,

Liwen Qin

et al.

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: Jan. 2, 2025

Abstract The current researches on microplastics in different water layers of reservoirs remains limited. This study aims to investigate the within a source reservoir. Results revealed that abundance ranged from 2.07 n/L 14.28 (reservoir, water) and 3 7.02 (river, water), while varied 350 714 n/kg (dw) sediment) 299 1360 sediment). average surface, middle, bottom were 6.83 n/L, 6.30 6.91 respectively. Transparent fibrous smaller than < 0.5 mm identified as predominant fraction with Polypropylene Polyethylene being prevalent polymer types. Additionally, pollution load index, hazard risk index calculated for sediments. showed surface exhibited moderate level sediments posed low risk. Both middle elevated levels due higher concentrations polymers significant toxicity indices. presents novel findings distribution layers, providing crucial data support understanding migration patterns facilitating prevention efforts.

Language: Английский

Citations

3