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Sustainable Solutions for Nano and Microplastic Pollution: Challenges and Innovations

A special issue of Sustainability (ISSN 2071-1050). This special issue belongs to the section "Environmental Sustainability and Applications".

Deadline for manuscript submissions: 31 October 2025 | Viewed by 599

Special Issue Editor


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Guest Editor
Laboratoire d’Oceanographie de Villefranche, Sorbonne Université, 06230 Villefranche sur Mer, France
Interests: microplastic pollution and plankton ecology

Special Issue Information

Dear Colleagues,

Nano- and microplastic pollution is an increasing global environmental concern that affects both ecosystems and human health. Despite the exponential growth in plastic research over the past decade and the extensive efforts being made to quantify and characterize these particles, research on nano- and microplastics continues to encounter significant sampling and analytical challenges.

Factors such as the substrate of the samples (water, sediments, biota, etc.) and the plastic characteristics (concentrations, size, weathering, etc.) must be considered for sample collection and all forward analytical procedures. To address the high complexity of these samples and the diversity of these particles, it is crucial to optimize existing methods and develop new, more efficient analytical techniques. Additionally, standardizing sampling and analysis methodologies is essential to fully understand the impacts of nano- and microplastics on ecosystems and human health.

This Special Issue will highlight the current challenges in nano- and microplastic research while proposing innovative, sustainable solutions to improve investigations into this field. Our goal is to address the difficulties faced by the scientific community and foster a consensus to enable the critical homogenization of methodologies across research groups.

For this Special Issue, original research articles and reviews are welcome. Research topics may include (but are not limited to) the following:

  • Challenges encountered during the sampling of nano- and microplastic pollution in various research areas (e.g., sampling in oceanic waters or analyzing plastic ingestion in organisms);
  • Difficulties associated with and limitations of current methodologies for the identification and characterization of microplastics (e.g., µFTIR, LDIR);
  • Suggestions for making improvements to existing analytical methodologies with a focus on sustainability;
  • Presentation of new analytical methods under development, providing the scientific community with insights into upcoming tools that could significantly advance nano- and microplastic research;
  • Perspectives on methodology standardization and other innovations that would lead to more accurate results, thereby facilitating the assessment of the impacts of nano- and microplastic pollution on ecosystems and human health.

We look forward to receiving your valuable contributions.

Dr. Rocio Rodriguez-Torres
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Sustainability is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • nano- and microplastic pollution
  • challenges
  • sustainable approach
  • innovations
  • alternatives
  • standardization
  • analytical and sampling methods

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Published Papers (1 paper)

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Research

21 pages, 3830 KiB  
Article
Field Evaluation of Rice Husk Biochar and Pine Tree Woodchips for Removal of Tire Wear Particles from Urban Stormwater Runoff in Oxford, Mississippi (USA)
by Boluwatife S. Olubusoye, James V. Cizdziel, Kendall Wontor, Ruojia Li, Rachel Hambuchen, Voke Tonia Aminone, Matthew T. Moore and Erin R. Bennett
Sustainability 2025, 17(9), 4080; https://doi.org/10.3390/su17094080 - 30 Apr 2025
Viewed by 349
Abstract
Tire wear particles (TWPs), a form of microplastics (MPs) pollution, are transported into waterbodies through stormwater runoff, leading to environmental pollution and impacts on associated biota. Here, we investigated the effectiveness of stormwater filter socks filled with rice husk biochar or pine tree [...] Read more.
Tire wear particles (TWPs), a form of microplastics (MPs) pollution, are transported into waterbodies through stormwater runoff, leading to environmental pollution and impacts on associated biota. Here, we investigated the effectiveness of stormwater filter socks filled with rice husk biochar or pine tree woodchips in reducing TWP pollution in urban runoff in Oxford, Mississippi. Triplicate runoff samples were collected upstream and downstream of the biofilters at two sites during two storm events at peak flow within minutes of the start of the storm and after 30 min. Samples were analyzed for TWPs using a combination of stereomicroscopy, micro-attenuated total reflectance Fourier transform infrared spectroscopy (µ-ATR-FTIR), and scanning electron microscopy (SEM) with energy dispersive X-ray spectroscopy (EDX). Concentrations (TWPs/L) upstream of the biofilter were variable but highest at the start of the runoff, dropping from an average of 2811 ± 1700 to 476 ± 63 after 30 min at site 1 and from 2702 ± 353 to 2356 ± 884 at site 2. Biochar was more effective than woodchips (p < 0.05) at removing TWPs, reducing concentrations by an average of 97.6% (first use) and 85.3% (second use) compared to 66.2% and 54.2% for woodchips, respectively. Biochar was particularly effective at removing smaller TWPs (<100 µm). Both materials became less effective with use, suggesting fewer available trapping sites and the need for removal and replacement of the material with time. Overall, this study suggests that biochar and woodchips, alone or in combination, deserve further scrutiny as a potential cost-effective and sustainable method to mitigate the transfer of TWPs to aquatic ecosystems and associated biota. Full article
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