Rapid flocculation and settling of positively buoyant microplastic and fine-grained sediment in natural seawater

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Standard

Rapid flocculation and settling of positively buoyant microplastic and fine-grained sediment in natural seawater. / Laursen, S. N.; Fruergaard, M.; Andersen, T. J.

I: Marine Pollution Bulletin, Bind 178, 113619, 2022.

Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt

Harvard

Laursen, SN, Fruergaard, M & Andersen, TJ 2022, 'Rapid flocculation and settling of positively buoyant microplastic and fine-grained sediment in natural seawater', Marine Pollution Bulletin, bind 178, 113619. https://doi.org/10.1016/j.marpolbul.2022.113619

APA

Laursen, S. N., Fruergaard, M., & Andersen, T. J. (2022). Rapid flocculation and settling of positively buoyant microplastic and fine-grained sediment in natural seawater. Marine Pollution Bulletin, 178, [113619]. https://doi.org/10.1016/j.marpolbul.2022.113619

Vancouver

Laursen SN, Fruergaard M, Andersen TJ. Rapid flocculation and settling of positively buoyant microplastic and fine-grained sediment in natural seawater. Marine Pollution Bulletin. 2022;178. 113619. https://doi.org/10.1016/j.marpolbul.2022.113619

Author

Laursen, S. N. ; Fruergaard, M. ; Andersen, T. J. / Rapid flocculation and settling of positively buoyant microplastic and fine-grained sediment in natural seawater. I: Marine Pollution Bulletin. 2022 ; Bind 178.

Bibtex

@article{90a61ee76b674840a0ac737a25731cf0,
title = "Rapid flocculation and settling of positively buoyant microplastic and fine-grained sediment in natural seawater",
abstract = "Interactions between microplastic (MP) and fine-grained suspended sediment in natural waters are important for the environmental fate of plastic particles. Estuaries are transitional areas between freshwater and open marine systems and are recognized as important accumulation zones for MPs. However, there is a knowledge gap on the processes driving the sedimentation of MPs in estuaries, especially with regard to positively buoyant MPs. Here we show from settling tube experiments that positively buoyant and non-spherical MP HDPE particles in different size-fractions (63–500 μm) and concentrations (1 and 5 mg l−1) rapidly flocculate and settle with natural fine-grained sediment in natural seawater. Our results demonstrate that flocculation is a key process for the vertical transport of MP in estuaries. The implication is that land-based sources of positively buoyant HDPE MP transported by rivers will likely settle and accumulate in estuarine environments and thereby increase the concentration of MP in the benthic zone.",
keywords = "Buoyant microplastic, Estuaries, Flocculation, HDPE, Sedimentation, Settling experiments",
author = "Laursen, {S. N.} and M. Fruergaard and Andersen, {T. J.}",
note = "Publisher Copyright: {\textcopyright} 2022 The Authors",
year = "2022",
doi = "10.1016/j.marpolbul.2022.113619",
language = "English",
volume = "178",
journal = "Marine Pollution Bulletin",
issn = "0025-326X",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Rapid flocculation and settling of positively buoyant microplastic and fine-grained sediment in natural seawater

AU - Laursen, S. N.

AU - Fruergaard, M.

AU - Andersen, T. J.

N1 - Publisher Copyright: © 2022 The Authors

PY - 2022

Y1 - 2022

N2 - Interactions between microplastic (MP) and fine-grained suspended sediment in natural waters are important for the environmental fate of plastic particles. Estuaries are transitional areas between freshwater and open marine systems and are recognized as important accumulation zones for MPs. However, there is a knowledge gap on the processes driving the sedimentation of MPs in estuaries, especially with regard to positively buoyant MPs. Here we show from settling tube experiments that positively buoyant and non-spherical MP HDPE particles in different size-fractions (63–500 μm) and concentrations (1 and 5 mg l−1) rapidly flocculate and settle with natural fine-grained sediment in natural seawater. Our results demonstrate that flocculation is a key process for the vertical transport of MP in estuaries. The implication is that land-based sources of positively buoyant HDPE MP transported by rivers will likely settle and accumulate in estuarine environments and thereby increase the concentration of MP in the benthic zone.

AB - Interactions between microplastic (MP) and fine-grained suspended sediment in natural waters are important for the environmental fate of plastic particles. Estuaries are transitional areas between freshwater and open marine systems and are recognized as important accumulation zones for MPs. However, there is a knowledge gap on the processes driving the sedimentation of MPs in estuaries, especially with regard to positively buoyant MPs. Here we show from settling tube experiments that positively buoyant and non-spherical MP HDPE particles in different size-fractions (63–500 μm) and concentrations (1 and 5 mg l−1) rapidly flocculate and settle with natural fine-grained sediment in natural seawater. Our results demonstrate that flocculation is a key process for the vertical transport of MP in estuaries. The implication is that land-based sources of positively buoyant HDPE MP transported by rivers will likely settle and accumulate in estuarine environments and thereby increase the concentration of MP in the benthic zone.

KW - Buoyant microplastic

KW - Estuaries

KW - Flocculation

KW - HDPE

KW - Sedimentation

KW - Settling experiments

U2 - 10.1016/j.marpolbul.2022.113619

DO - 10.1016/j.marpolbul.2022.113619

M3 - Journal article

C2 - 35378460

AN - SCOPUS:85127343413

VL - 178

JO - Marine Pollution Bulletin

JF - Marine Pollution Bulletin

SN - 0025-326X

M1 - 113619

ER -

ID: 316398648