Shields Diagram and the Incipient Motion of Microplastic Particles

Koray Deniz Goral; Hasan Gokhan Guler; David R. Fuhrman; Bjarke Eltard Larsen; Stefan Carstensen; Erik Damgaard Christensen; Nils B. Kerpen; Torsten Schlurmann

doi:10.1021/acs.est.3c02027

Shields Diagram and the Incipient Motion of Microplastic Particles

Koray Deniz Goral^*, Hasan Gokhan Guler , David R. Fuhrman, Bjarke Eltard Larsen, Stefan Carstensen, Erik Damgaard Christensen, Nils B. Kerpen, Torsten Schlurmann

^*Corresponding author for this work

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Abstract

Incipient motion conditions for 57 regular (spheres, cylinders, disks, square plates, cubes, square prisms, rectangular prisms, tetrahedrons, and fibers) and eight irregular microplastic particle groups, having various sizes and densities, are investigated in a circular flume. The present data set is combined with additional data from the literature and systematically analyzed. A new framework is developed for predicting incipient motion conditions for foreign particles, accounting for variations in static friction, hydraulic roughness, and hiding-exposure effects. Via this framework, incipient motion conditions for microplastic particles lying on a sediment bed are, for the first time, reconciled with the classical Shields diagram.

Original language	English
Journal	Environmental Science & Technology
Volume	57
Issue number	25
Pages (from-to)	9362–9375
ISSN	0013-936X
DOIs	https://doi.org/10.1021/acs.est.3c02027
Publication status	Published - 2023

Keywords

Nonbuoyant
Particle threshold
Shields parameter
Critical shear stress
Hydraulic roughness
Hiding-exposure

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10.1021/acs.est.3c02027

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title = "Shields Diagram and the Incipient Motion of Microplastic Particles",

abstract = "Incipient motion conditions for 57 regular (spheres, cylinders, disks, square plates, cubes, square prisms, rectangular prisms, tetrahedrons, and fibers) and eight irregular microplastic particle groups, having various sizes and densities, are investigated in a circular flume. The present data set is combined with additional data from the literature and systematically analyzed. A new framework is developed for predicting incipient motion conditions for foreign particles, accounting for variations in static friction, hydraulic roughness, and hiding-exposure effects. Via this framework, incipient motion conditions for microplastic particles lying on a sediment bed are, for the first time, reconciled with the classical Shields diagram.",

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author = "Goral, {Koray Deniz} and Guler, {Hasan Gokhan} and Fuhrman, {David R.} and Larsen, {Bjarke Eltard} and Stefan Carstensen and Christensen, {Erik Damgaard} and Kerpen, {Nils B.} and Torsten Schlurmann",

year = "2023",

doi = "10.1021/acs.est.3c02027",

language = "English",

volume = "57",

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T1 - Shields Diagram and the Incipient Motion of Microplastic Particles

AU - Goral, Koray Deniz

AU - Guler , Hasan Gokhan

AU - Fuhrman, David R.

AU - Larsen, Bjarke Eltard

AU - Carstensen, Stefan

AU - Christensen, Erik Damgaard

AU - Kerpen, Nils B.

AU - Schlurmann, Torsten

PY - 2023

Y1 - 2023

N2 - Incipient motion conditions for 57 regular (spheres, cylinders, disks, square plates, cubes, square prisms, rectangular prisms, tetrahedrons, and fibers) and eight irregular microplastic particle groups, having various sizes and densities, are investigated in a circular flume. The present data set is combined with additional data from the literature and systematically analyzed. A new framework is developed for predicting incipient motion conditions for foreign particles, accounting for variations in static friction, hydraulic roughness, and hiding-exposure effects. Via this framework, incipient motion conditions for microplastic particles lying on a sediment bed are, for the first time, reconciled with the classical Shields diagram.

AB - Incipient motion conditions for 57 regular (spheres, cylinders, disks, square plates, cubes, square prisms, rectangular prisms, tetrahedrons, and fibers) and eight irregular microplastic particle groups, having various sizes and densities, are investigated in a circular flume. The present data set is combined with additional data from the literature and systematically analyzed. A new framework is developed for predicting incipient motion conditions for foreign particles, accounting for variations in static friction, hydraulic roughness, and hiding-exposure effects. Via this framework, incipient motion conditions for microplastic particles lying on a sediment bed are, for the first time, reconciled with the classical Shields diagram.

KW - Nonbuoyant

KW - Particle threshold

KW - Shields parameter

KW - Critical shear stress

KW - Hydraulic roughness

KW - Hiding-exposure

UR - https://doi.org/10.11583/DTU.19762507.v2

U2 - 10.1021/acs.est.3c02027

DO - 10.1021/acs.est.3c02027

M3 - Journal article

C2 - 37322884

SN - 0013-936X

VL - 57

SP - 9362

EP - 9375

JO - Environmental Science & Technology

JF - Environmental Science & Technology

IS - 25

ER -

Shields Diagram and the Incipient Motion of Microplastic Particles

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Keywords

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