Migration and Transformation Processes and Environmental Effects of Microplastics in Soil

A special issue of Soil Systems (ISSN 2571-8789).

Deadline for manuscript submissions: 31 October 2025 | Viewed by 274

Special Issue Editor


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Guest Editor
School of Engineering, College of Engineering, Science and Environment, The University of Newcastle, Callaghan, NSW 2308, Australia
Interests: micro/nanoplastics; terrestrial environment; emerging contaminants; sustainable practices; environmental remediation; soil physiochemical properties

Special Issue Information

Dear Colleagues,

Micro/nanoplastics are increasingly recognized as pervasive pollutants in terrestrial ecosystems, particularly in soils. The fate of micro/nanoplastics in soils is determined by various factors, including soil properties, pH, organic matter content, moisture content, and microbial activity, among others. Studies indicate that micro/nano plastics can be retained within the soil matrix, affecting their degradation rates and potential for transport. Micro/nano plastics may undergo fragmentation or aggregation, altering their environmental behavior. In addition, micro/nano plastics can disrupt soil ecological communities, potentially leading to reduced microbial diversity and altered nutrient cycling.

This special issue aims to expand on the current research status of micro/nanoplastics in soils. Some potential topics include the fate of micro/nanoplastics in soil, risk assessment of environmental micro/nanoplastics, and the impact of micro/nanoplastics on soil ecosystems. Research, review, and opinion articles concerning our current knowledge of the fate and environmental effects of microplastics in soil are invited.

Dr. Zahra Sobhani
Guest Editor

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Keywords

  • contaminant bioavailability
  • contaminant toxicity
  • soil chemistry
  • microplastics
  • nanoplastics

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Published Papers (1 paper)

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Research

14 pages, 1194 KiB  
Article
Microplastic Transport by Overland Flow: Effects of Soil Texture and Slope Gradient Under Simulated Semi-Arid Conditions
by Fabio Corradini
Soil Syst. 2025, 9(2), 40; https://doi.org/10.3390/soilsystems9020040 - 29 Apr 2025
Abstract
Microplastic pollution in soils and surface waters is a growing environmental concern, yet the mechanisms governing transport by overland flow remain unclear. This study investigated the influence of soil texture and slope gradient on the movement of microplastics with different shapes and polymer [...] Read more.
Microplastic pollution in soils and surface waters is a growing environmental concern, yet the mechanisms governing transport by overland flow remain unclear. This study investigated the influence of soil texture and slope gradient on the movement of microplastics with different shapes and polymer compositions under simulated rainfall and typical agricultural conditions in a semi-arid climate. Small soil flumes were subjected to controlled rainfall simulations replicating typical rain patterns, and microplastic transport was quantified using collection flasks. The results indicated that neither soil texture nor slope gradient significantly affected total microplastic transport. However, fibres exhibited greater retention in the soil compared to other shapes. Polymer composition did not play a major role in microplastic mobility, except for polystyrene pellets, which were transported more readily than polyethylene pellets. Field observations of agricultural soils with a history of sludge application confirmed a predominance of fibres in the topsoil, reinforcing the tendency of this shape to resist mobilisation. These findings suggest that microplastic transport by surface runoff is primarily governed by particle shape and buoyancy rather than soil properties or slope inclination. Future research should explore the roles of particle size, rainfall intensity, and organic matter content in microplastic mobility under natural field conditions. Full article
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