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Micro-Nano-Plastics in Sewage Sludge: Sources, Occurrence, and Potential Environmental Risks
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Researchers reviewed how microplastics accumulate in sewage sludge — the byproduct of wastewater treatment — posing a significant environmental risk when sludge is applied to agricultural land. Because sludge is commonly used as fertilizer, microplastics from many sources can end up in soils and eventually in the food supply.
The presence of microplastics (MPs) as a global contaminant has gained increasing attention, particularly in relation to water pollution. However, research on MPs in sewage sludge remains restricted in comparison. MPs originating from many sources accumulate inside...
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Current Progress of Microplastics in Sewage Sludge
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Researchers reviewed the presence of microplastics in sewage sludge, finding that while wastewater treatment plants capture most microplastics from water, the resulting sludge becomes a concentrated reservoir that can spread microplastics to agricultural soils when applied as fertilizer.
Occurrence, Fate, and Removal of Microplastics in Sewage Treatment Plants (STPs)
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Researchers reviewed how sewage treatment plants handle microplastics, finding that while these facilities remove a large fraction from wastewater, they also concentrate microplastics in sewage sludge that is then spread on agricultural land — potentially transferring plastic pollution from water to soil and food systems.
Wastewater as a Source of Microplastic Pollution: Fate and Risk on Biota
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This review examined wastewater as a primary pathway for microplastic entry into the environment, assessing the fate of particles through treatment systems and the ecological and health risks they pose to biota after discharge. Wastewater effluent and biosolid land application together represent two of the most direct routes by which MNPs reach agricultural soils and drinking water sources, making treatment plant performance central to human exposure reduction.
Nanoplastics in Wastewater: Monitoring, Ecotoxicity, and Remediation
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Researchers explore the challenges posed by nanoplastics in wastewater, examining monitoring methods for detecting these extremely small particles, their ecotoxicity to aquatic organisms and ecosystems, and promising remediation strategies for reducing nanoplastic contamination before treated water is discharged into the environment.
Microplastics in Wastewater Treatment Plants: Occurrence, Fate and Mitigation Strategies
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Wastewater treatment plants (WWTPs) are major conduits for microplastics into the environment, yet even advanced treatment systems fail to fully remove the smallest particles before discharge. Understanding microplastic fate across treatment stages is essential for developing targeted mitigation strategies that reduce the tonnage of plastic particles entering rivers, soils, and ultimately the food supply.
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