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Hydro-environmental effects of microplastic dynamics and distribution in Ganga River basin system: An urban impact analysis
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A modeling study examined the hydro-environmental dynamics of microplastic distribution in a water body, simulating how physical processes govern particle movement and accumulation. Hydrodynamic models for microplastics improve our ability to predict contamination hotspots and guide monitoring efforts.
Emerging micropollutants like microplastics (MPs) pose a global environmental concern that has gathered significant attention. MPs were evaluated in the Ganges River Basin (GRB), the largest river basin in India, specifically emphasizing MPs transportation along the GRB. Remarkable differences were indicated about the abundance in the water and sediment column at 27 sampling stations, with a mean of 2.99 ± 2.20items/L and 303.82 ± 215.94items/kg dw respectively, at p < 0.05. The most prevalent size of MPs in the water column was 0.10 to 0.50 mm, while the primary polymer types of MPs were recognised as polyethylene, PE (28.30 %), and polypropylene, PP (24.70 %). MP characteristics in sediments were similar in classification; however, there was a significantly higher count of denser particles, with those in the <0.1 mm size range being notably more abundant than in the water column, exceeding by over 18.60 % (P < 0.05). The extended retention of MPs in sediment were influenced by density, shape, particle size, environmental parameters (AT: Absolute Temperature, TP: Total Phosphate, TN: Total Nitrogen) and socioeconomic parameters (UD: Urban Density, UR: Urbanisation Rate, ALR: Agricultural Land Utility, RLU: Residential Land Utility).
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Microplastic Pollution in Rivers and Hydrodynamic Modeling
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This Turkish-language review covers microplastic pollution in rivers, including sources, transport mechanisms, and hydrodynamic modeling approaches. Rivers are the primary pathway by which microplastics move from land-based sources to the ocean.
Sources and Factors Influencing Microplastic Concentration during Monsoon Season in Ganga River, Bihar, India
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Researchers investigated sources and factors influencing microplastic concentrations in the Ganga River in Bihar, India during the monsoon season, examining how untreated residential and industrial waste discharge and traffic-related runoff affect plastic particle loads in one of the world's most biodiverse river systems. The study found elevated microplastic concentrations during monsoon flows, with urbanization and inadequate waste management identified as key drivers of microplastic inputs to the river.
Exploring the Sensitivity of Microplastic Accumulation Zones in Rivers Using High-Performance Particle Transport Modelling
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Researchers applied high-performance particle transport modelling to explore the sensitivity of microplastic accumulation zones in rivers, identifying key hydrodynamic factors that govern where microplastics concentrate. The modelling approach provides a tool for predicting hotspot areas of microplastic deposition in fluvial environments.
Multi-Type Microplastic Migration Model Driven by River Hydrodynamic Conditions
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Scientists built a model that predicts how different types of microplastics move through rivers, some float and travel quickly downstream, others sink to the riverbed, and some stay suspended in the water depending on their size, shape, and material. This matters because most of the microplastics found (over 70%) were smaller than half a millimeter, tiny enough to be easily ingested by fish and potentially end up in our drinking water or food supply, so understanding where they travel and accumulate can help target cleanup efforts and pollution control where they're needed most.
Urbanization and population resources affect microplastic concentration in surface water of the River Ganga
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Researchers found that microplastic concentrations in River Ganga surface water were significantly higher near urbanized and densely populated areas, with fibers and fragments being the dominant types, indicating that urbanization and population density are key drivers of riverine microplastic pollution.
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When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.