Stride, Ben, Dykes, Charlotte, Abolfathi, Soroush, Jimoh, Modupe, Bending, Gary D. and Pearson, Jonathan M. (2023) Datasets to support: 'Microplastic transport dynamics in surcharging and overflowing manholes'. [Dataset] (In Press)

Archive (ZIP) (Dataset file) WRAP_Stride_177507_DatasetFiles.zip - Published Version Available under License Creative Commons Attribution 4.0. Download (57Mb)

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Abstract

The transport of microplastics within urban water systems remains poorly understood, with little prior research on their behavior within manhole configurations. This study represents the first to measure and model the transport dynamics of microplastics within circular and square manholes under different hydraulic scenarios. The transport and fate of polyethylene (PE) was quantified and compared to solutes (Rhodamine WT dye) using energy losses, residence time distributions (RTDs), and mixing models within surcharging and overflowing manholes. The bulk mass of solute and PE concentrations followed similar flow paths across all conditions except for 17.3 ± 7.9 % of PE mass that was immobilized in a dead zone above the inlet pipe for manholes with a surcharge to pipe diameter ratio ≥ 2. Consequently, these microplastics only exit after a significant change in hydraulic regime occurs, causing microplastics to be at risk of being contaminated over a prolonged duration. No significant mixing differences for PE and solutes were found between manhole geometries. The deconvolution method outperformed the ADZ model with goodness of fit (R_t^2) values of 0.99 (0.60) and 1.00 (0.89) for PE and solute mixing respectively. This establishes the deconvolution method as the first mixing model to accurately predict microplastic mixing.

Item Type:	Dataset
Subjects:	G Geography. Anthropology. Recreation > GE Environmental Sciences T Technology > TC Hydraulic engineering. Ocean engineering
Divisions:	Faculty of Science, Engineering and Medicine > Engineering > Engineering
Type of Data:	Concentration Data
Library of Congress Subject Headings (LCSH):	Microplastics, Polyethylene, Water -- Pollution, Manholes, Sewerage
Publisher:	University of Warwick, School of Engineering
Official Date:	21 July 2023
Dates:	Date Event 21 July 2023 Published 20 July 2023 Available 18 July 2023 Accepted 18 May 2023 Submitted
Status:	Not Peer Reviewed
Publication Status:	In Press
Media of Output (format):	.xslx
Access rights to Published version:	Open Access (Creative Commons)
Date of first compliant deposit:	4 August 2023
Date of first compliant Open Access:	4 August 2023
RIOXX Funder/Project Grant:	Project/Grant ID RIOXX Funder Name Funder ID NE/S007350/1 [NERC] Natural Environment Research Council http://dx.doi.org/10.13039/501100000270
Related URLs:	Related item in WRAP

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