We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Experimental study of interception effect by submerged dam on microplastics
AI summary Read the abstract
Researchers used a laboratory flow flume to study how a submerged dam intercepts PVC and polystyrene microplastics, finding that the dam captured most particles but that un-intercepted particles changed their transport behavior downstream. The study quantified interception rates and identified factors influencing dam performance as a passive microplastic barrier in river management.
Submerged dam can alter microplastic (MP) transport, and act as a sink for MPs. In this paper, we investigated the interception rates of Polyvinyl chloride (PVC) and Polystyrene (PS) by an artificial submerged dam in a flow flume at first, and found that most of the un-intercepted PVC and PS particles by the dam accumulated behind it under the subcritical (Fr < 1) and turbulent (Re > 500) flows. PVC particles behind the dam mainly concentrated within two dam widths, and the concentration of PS particles decreased with the distance behind the dam lengthening. Then, we performed linear regression fitting and Redundancy Analysis (RDA) between the interception rates collected in 162 experiment tests and environmental factors, including flow velocity, distance to dam and MP concentration. The results showed that the interception rate of PVC and PS particles increased with the distance to dam lengthening, but decreased with the flow velocity and MP concentration heightening. RDA revealed that the interception rate was influenced by flow velocity, distance to dam, and MP concentration from the most to the least. Our findings are believed to contribute to understanding the mechanism of the interception effect of submerged dam on microplastics.
More Papers Like This
The effect of dams on river transport of microplastic pollution
AI summary Read the abstract
This study investigated whether dams trap microplastics in river sediments, finding significant accumulation of microplastics upstream of dams compared to downstream, suggesting dams act as microplastic sinks. The findings have implications for managing microplastic transport through river systems and for understanding contamination risks associated with dam removal.
Effect of cascade damming on microplastics transport in rivers: A large-scale investigation in Wujiang River, Southwest China
AI summary Read the abstract
Researchers investigated how cascade damming on the Wujiang River in China affects microplastic transport, finding that dams intercept microplastics and reduce their downstream flux, with midstream areas showing the highest concentrations.
The role of biofilm and hydrodynamics on the fate of microplastic particles in rivers: an experimental study
AI summary Read the abstract
Researchers conducted experimental flume studies to investigate how biofilm formation and hydrodynamic conditions jointly govern microplastic particle fate in rivers, examining why some urbanized and industrialized river reaches show no significant upstream-to-downstream increase in microplastic concentration despite theoretical inputs.
Submergence ratio and spacing between in-stream obstructions determine capture and accumulation of drifting particles in rivers
AI summary Read the abstract
Flume experiments examined how the spacing and height ratio of in-stream obstructions (like logs or boulders) affect microplastic capture and retention in rivers. The results could inform nature-based stream management strategies designed to trap microplastics before they reach the ocean.
Quantifying microplastic particle transport and retention in an experimental flume environment
AI summary Read the abstract
Researchers conducted flume experiments to quantify how microplastic particles of different shapes and densities are transported and retained in artificial river channels under controlled flow conditions. The results show that particle shape and flow dynamics strongly interact to determine where microplastics settle or remain suspended in river systems.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.