Papers

Assessment of environmental and socioeconomic drivers of urban stormwater microplastics using machine learning

Using machine learning on data from 107 urban areas worldwide, researchers identified the key factors driving microplastic levels in stormwater runoff, including weather patterns, land use, and waste management practices. The study found that inconsistent definitions of what counts as a "microplastic" across different studies is a major barrier to comparing contamination levels between cities.

Quantitative Determination of Poly(methyl Methacrylate) Micro/Nanoplastics by Cooling-Assisted Solid-Phase Microextraction Coupled to Gas Chromatography–Mass Spectrometry: Theoretical and Experimental Insights

Scientists developed a new, simplified method to detect and measure tiny plastic particles (micro and nanoplastics) made of PMMA (commonly known as acrylic or plexiglass) in water and soil. The technique uses a single step that both breaks down the plastic and captures the signature chemicals for analysis, achieving detection limits as low as 0.01 micrograms per liter. Better measurement tools like this are essential for understanding how much microplastic contamination exists in our environment and assessing its potential impact on health.

Advances in Catchment Science, Hydrochemistry, and Aquatic Ecology Enabled by High-Frequency Water Quality Measurements

This review covers advances in high-frequency water quality monitoring technology for streams and rivers, including automated sensors that measure pollutants in real time. While not focused on microplastics specifically, these monitoring tools are increasingly being adapted to track particulate pollutants including microplastics in waterways. Better real-time water monitoring could help communities identify and respond to microplastic contamination in their drinking water sources.

Pattern recognition receptors in Crustacea: immunological roles under environmental stress

This review examines how crustaceans like shrimp and crabs defend against infections using their innate immune system, and how environmental stressors including pollution weaken these defenses. While focused on crustacean health, the findings are relevant to humans because compromised shellfish immunity can affect the safety of farmed seafood that people consume.

Engineering a Cross-Feeding Synthetic Bacterial Consortium for Degrading Mixed PET and Nylon Monomers

Researchers engineered a team of two bacterial species that work together to break down monomers from both PET and nylon plastics, two of the most common types found in mixed plastic waste. The bacteria developed a cooperative feeding relationship where each species handles different plastic components and helps neutralize toxic byproducts. While still at the laboratory stage, this synthetic biology approach could eventually help break down mixed plastic waste before it degrades into microplastics in the environment.

Sandy beach social–ecological systems at risk: regime shifts, collapses, and governance challenges

Researchers examined how sandy beach ecosystems worldwide are being threatened by expanding coastal development, climate change, and pollution including plastic waste. They found that these combined pressures can push beach systems past tipping points, leading to rapid ecological collapses that are difficult to reverse. The study highlights the need for integrated governance approaches that consider beaches as interconnected social and ecological systems rather than just recreational spaces.

Degradation of polyethylene terephthalate (PET) plastics by wastewater bacteria engineered via conjugation

Scientists engineered wastewater bacteria to break down PET plastic, one of the most common microplastic types, by transferring plastic-degrading genes through a natural DNA-sharing process. The modified bacteria could partially degrade a consumer PET product in 5 to 7 days. This proof-of-concept approach could help reduce the amount of microplastics released from wastewater treatment plants into the environment.

2D nanomaterial for microplastic Removal: A critical review

Detection of microplastics by microfluidic microwave sensing: An exploratory study

Researchers developed a compact microwave sensor on a microfluidic chip to detect microplastics in water samples. The system works by measuring how the presence of plastic particles changes the electrical properties of water. While the technology shows promise as a rapid and portable detection method, its current sensitivity needs improvement before it can detect the low microplastic concentrations typically found in natural freshwater.

Fish and macroinvertebrate assemblages reveal extensive degradation of the world's rivers

Researchers assessed the biological health of rivers worldwide using fish and macroinvertebrate data from over 100,000 sites across 45 countries, including the most comprehensive coverage of the Global South to date. They found that roughly one-third of assessed river sites showed signs of significant biological degradation. The study highlights that freshwater biodiversity loss is a global crisis, with pollution and habitat alteration affecting rivers on every inhabited continent.

Catalytic and biocatalytic degradation of microplastics

This review covers the current state of breaking down microplastics using catalysts and biological agents including enzymes, metals, nanomaterials, and microorganisms. While some approaches show promise for degrading certain plastic types, the field is still developing standardized methods for measuring how well these techniques work. Finding effective ways to break down microplastics is critical for reducing the environmental and health burden of plastic pollution.

Advancing Evaluation of Microplastics Thresholds to Inform Water Treatment Needs and Risks

This study introduces a new framework called the Threshold Microplastics Concentration (TMC) to help drinking water providers evaluate whether microplastics in their water supply could carry enough harmful chemicals to pose a health risk. The tool uses data on how much contamination microplastics can absorb to determine when further testing or treatment upgrades are needed. This science-based screening approach could help water utilities make better decisions about protecting public health from microplastic exposure.

Plant Disease Management: Leveraging on the Plant-Microbe-Soil Interface in the Biorational Use of Organic Amendments

This review discusses how organic soil amendments can help restore soil health and manage plant diseases by supporting beneficial microbial communities in the root zone. Researchers found that organic amendments improve the interactions between plants, soil microbes, and the surrounding soil environment, creating conditions less favorable for plant pathogens. The study emphasizes that sustainable agricultural practices that nurture soil biology may reduce the need for synthetic pesticides and plastics in farming.

Informing the Exposure Landscape: The Fate of Microplastics in a Large Pelagic In-Lake Mesocosm Experiment

In a large lake experiment, researchers tracked where microplastics go after entering a freshwater ecosystem and found that after 10 weeks, over 98% settled to the surface or bottom, while only about 1% remained suspended in the water. Organisms feeding at the water surface and bottom sediments had the highest exposure to microplastics, while those in the middle water column had much less. This helps explain which aquatic organisms are most at risk and how microplastics might enter the food chain that leads to human consumption.

Preventing Microplastic Pollution in Surface Waters: Legal Frameworks and Strategic Actions

This study reviews the legal frameworks and strategic actions being developed in India and internationally to prevent microplastic contamination of surface waters. Researchers examined policies including plastic waste management rules, bans on single-use plastics, and extended producer responsibility programs. The study highlights that while regulatory progress has been made, effective enforcement and coordination between governments, industry, and the public remain essential for reducing microplastic pollution in waterways.

Effects of microplastics accumulation on performance of membrane bioreactor for wastewater treatment

Researchers simulated the long-term accumulation of polypropylene microplastics in membrane bioreactors used for wastewater treatment. They found that while microplastic accumulation did not reduce the removal of key pollutants like COD and ammonia nitrogen, it did increase membrane fouling and alter the composition of microbial communities in the reactor. The study suggests that microplastic buildup in wastewater treatment systems may affect operational efficiency over time.

Microparticles in Wild and Caged Biota, Sediments, and Water Relative to Large Municipal Wastewater Treatment Plant Discharges

Researchers examined microplastic levels in fish, water, and sediment upstream and downstream of two large wastewater treatment plants along the Grand River in Ontario, Canada. Despite expectations, they did not find consistently higher microplastic levels in organisms living near wastewater outfalls compared to upstream sites. The findings suggest that microplastic contamination in rivers may come from many widespread sources rather than being dominated by wastewater discharge.

Balancing New Approaches and Harmonized Techniques in Nano- and Microplastics Research

This editorial discusses the challenge of balancing innovation with standardization in nano- and microplastics research. The authors argue that while new analytical methods are essential for advancing the field, the lack of harmonized techniques makes it difficult to compare results across studies. The piece calls for the research community to develop shared reference materials and standardized protocols alongside cutting-edge approaches.

Current State of Microplastic Pollution Research Data: Trends in Availability and Sources of Open Data

Researchers analyzed data sharing practices in the microplastics research community and found that less than a third of published articles included a data sharing statement. Of the datasets found in online repositories, most were provided as supplementary material rather than in dedicated data repositories, suggesting that the rate of open data sharing lags behind the rapid growth in microplastics publications.

Scientists’ Warning to Humanity: Rapid degradation of the world’s large lakes

Scientists issued a comprehensive warning that the world's large lakes — critical freshwater sources supporting biodiversity and billions of people — are degrading rapidly due to warming temperatures, habitat destruction, invasive species, and accelerating pollution including microplastics. The review calls for urgent conservation action and a global network of long-term lake monitoring stations to detect and respond to ongoing changes.

Valorization of plastic waste <i>via</i> chemical activation and carbonization into activated carbon for functional material applications

This review examines how waste plastics can be transformed into activated carbon through chemical activation and carbonization processes. Researchers analyzed various methods for converting different plastic types into porous carbon materials with practical applications. The findings suggest that turning plastic waste into activated carbon offers a valuable alternative to traditional disposal methods.

A critical review of microplastic degradation and material flow analysis towards a circular economy

This critical review examined microplastic degradation processes and applied material flow analysis to understand plastic waste streams toward a circular economy. The study highlights that microplastics are particularly threatening due to their high mobility, ease of ingestion by wildlife, and ability to carry toxic contaminants, and identifies key intervention points in the plastic life cycle where waste reduction could be most effective.

Xyloglucan films from tamarind kernels reinforced with chemically modified cellulose nanospheres

Researchers developed biodegradable films from tamarind kernel xyloglucan reinforced with chemically modified cellulose nanospheres as an alternative to conventional plastic food packaging. The bio-based films showed improved mechanical and barrier properties, offering a renewable approach to reducing microplastic and nanoplastic generation from the food packaging sector.

Identification of marine microplastics by a combined method of principal component analysis and random forest for fluorescence spectrum processing

Researchers developed a combined principal component analysis and random forest method to identify microplastics from overlapping fluorescence spectra. The technique achieved 99.7% accuracy for component identification and a correlation coefficient exceeding 0.99 for predicting microplastic concentrations. The model, initially trained on commercial plastic samples, was also successfully applied to identify real marine microplastics.