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Nanoplastics as carriers of organic pollutants in seawater-saturated porous media: a quantitative comparison of transport pathways
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Researchers quantitatively compared transport pathways of non-polar organic pollutants carried by nanoplastics through seawater-saturated porous media, demonstrating that the carrier effect of nanoplastics is the primary mechanism inhibiting pollutant migration and enabling their co-transport in coastal and marine subsurface environments.
The inhibited migration of non-polar organic pollutants in seawater-saturated porous media is primarily attributed to the carrier effect of nanoplastics.
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Researchers found that nanoplastics dominated cotransport behavior when mixed with submicro- and microplastics in seawater-saturated sandy porous media, with particle-particle interactions significantly altering transport distances compared to single-component systems.
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Researchers reviewed the key factors that control how micro- and nanoplastics move through porous media such as soil and sediment, and how they affect the transport of co-occurring pollutants. They found that microplastics can either facilitate or inhibit the movement of other contaminants depending on particle properties and environmental conditions. The review emphasizes the need to better understand these co-transport dynamics for predicting the environmental fate of plastic pollution.
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Researchers examined the cotransport of naphthalene with polystyrene nanoplastics in saturated sand columns and found that varying the nanoplastic-to-naphthalene ratio and ionic strength significantly influenced the mobility of both contaminants, confirming nanoplastics as effective carriers of hydrophobic organic pollutants in porous media.
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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.