Shields Diagram and the Incipient Motion of Microplastic Particles

authored by: Koray Deniz Goral, Hasan Gokhan Guler, Bjarke Eltard Larsen, Stefan Carstensen, Erik Damgaard Christensen, Nils B Kerpen, Torsten Schlurmann, David R Fuhrman
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.
Organisation(s): Ludwig-Franzius-Institute of Hydraulics, Estuarine and Coastal Engineering
External Organisation(s): Technical University of Denmark
Type: Article
Journal: Environmental Science & Technology
Volume: 57
Pages: 9362-9375
No. of pages: 14
ISSN: 0013-936X
Publication date: 27.06.2023
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: General Chemistry, Environmental Chemistry
Electronic version(s): https://doi.org/10.1021/acs.est.3c02027 (Access: Closed)

BibTeX

@article{9ff2053d486c40abb97a4e91238f114c,
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.",
keywords = "Shields parameter, critical shear stress, hiding-exposure, hydraulic roughness, nonbuoyant, particle threshold",
author = "Goral, {Koray Deniz} and Guler, {Hasan Gokhan} and Larsen, {Bjarke Eltard} and Stefan Carstensen and Christensen, {Erik Damgaard} and Kerpen, {Nils B} and Torsten Schlurmann and Fuhrman, {David R}",
note = "ACKNOWLEDGMENTS This research has been financially supported by the Independent Research Fund Denmark project MPCOAST: MicroPlastic transport processes in the COASTal environment, grant no. 0136-00227B. The second author additionally acknowledges financial support from The Scientific and Technical Research Council of Turkey (TUBITAK) under the 2219 International Postdoctoral Research Fellowship Programme. This support is greatly appreciated.",
year = "2023",
month = jun,
day = "27",
doi = "10.1021/acs.est.3c02027",
language = "English",
volume = "57",
pages = "9362--9375",
journal = "Environmental Science & Technology",
issn = "0013-936X",
publisher = "American Chemical Society",
number = "25",
}