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Assessing the efficacy and ecological impact of a plastic-dissolving agent on microplastic removal and soil microbial communities
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Scientists tested a chemical product designed to dissolve microplastics in soil, finding it removed up to 81% of certain plastic particles (like polystyrene and PVC) but caused unintended side effects, disrupting soil bacteria and fungi and altering greenhouse gas emissions. This suggests the product could be useful for quick cleanup in heavily polluted areas, but isn't a perfect fix—it may trade one environmental problem (plastic pollution) for another (soil ecosystem damage), so more research is needed before widespread use.
Microplastics (MPs) accumulation in soils, especially at tourist attractions, poses an ecological threat. Remediation technologies are often costly, slow, or disruptive. This study evaluated a commercial plastic-dissolving agent (DA) for the removal of MPs and its impact on soil health. In a 60-day incubation with soil from Yuelu Mountain, we tested conventional (PS, PVC) and biodegradable (PLA) MPs with/without DA, measuring greenhouse gas emissions, soil properties, enzymes, and microbial communities. DA removed 12–81% of MPs depending on polymer type. MPs alone increased CO 2 (16–129%) and N 2 O (315–421%). DA suppressed CO 2 and N 2 O emissions (19–99%) by inhibiting nitrification and labile C mineralization, while activating CH 4 oxidation. DA increased Pseudomonadota (13–26%) and Ascomycota (1–40%), simplified co-occurrence networks, and shifted community assembly towards stochasticity. DA reversed the negative impact of PS but reduced multifunctionality with PLA. DA can effectively remove conventional MPs but at the cost of ecological toxicity. Therefore, DA could be used for emergency removal of PS/PVC in severely contaminated hotspots.
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Unravelling the ecological ramifications of biodegradable microplastics in soil environment: A systematic review
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Researchers reviewed 85 studies on biodegradable microplastics in soil, finding that when biodegradable plastics fail to fully break down they can disrupt soil structure, nutrient cycling, and microbial life in ways that depend heavily on concentration and plastic type. The review highlights that "biodegradable" plastics are not a simple fix for microplastic pollution in agricultural soils.
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Researchers studied how microplastics affect soil structure, microbial activity, and greenhouse gas emissions, finding complex interactions that depend on microplastic type and concentration. The presence of microplastics in soils can alter the biological processes that regulate carbon storage and nutrient cycling.
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Researchers developed a compound microbial agent containing plastic-degrading microbes and tested it in field conditions on honeydew melon and eggplant farms, finding it effectively decomposed polyethylene microplastics in soil while also improving plant growth and soil properties.
A New Approachfor Remediating Polyethylene MicroplasticsPollution in Agricultural Soils: The Combined Effects of CompoundMicrobial Agent
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Researchers developed a compound microbial agent capable of degrading polyethylene microplastics and tested it in honeydew melon and eggplant fields, finding it reduced soil microplastic levels while also improving plant growth and overall soil health.
The Effect of Microplastics on Soil Microbial Activity, Biomass, and Microbial Community Structure in Three Types of Temperate Forest
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Scientists found that tiny plastic particles in forest soil can shift the balance of microorganisms living there, favoring bacteria over fungi and reducing the total amount of microbial life when the plastic pieces are especially small. Since these soil microbes play a key role in breaking down nutrients and keeping forest ecosystems healthy, this suggests that widespread microplastic pollution could quietly disrupt the natural systems that support clean soil, water, and the food chain we ultimately depend on.
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