We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
The formation, fate and environmental impacts of oil-particle aggregates in seawater
Summary
When oil spills happen in the ocean, oil droplets can stick together with tiny particles like minerals, algae, and even microplastics, forming clumps that behave differently than oil alone. This review of existing research finds that these clumps can either sink to the ocean floor (harming bottom-dwelling creatures) or float long distances while trapping toxic chemicals inside, making them last longer in the environment and more likely to be eaten by marine life that eventually ends up on our plates. The oil-microplastic combination is especially concerning since it's a newer, less-understood problem that could affect both ocean ecosystems and the seafood we e
This review systematically summarizes the formation mechanisms, environmental behavior and ecological effects of marine oil-particle aggregates (OPAs). OPAs form primarily via Pickering emulsion stabilization and a projectile mechanism, where oil droplets combine with suspended particles such as minerals, organic matter, and microplastics. Their formation is governed by oil properties, particle characteristics, and environmental conditions. OPAs significantly alter the transport and fate of spilled oil, with high-density OPAs promoting sedimentation and increasing benthic ecological risks, while neutrally-buoyant OPAs remain suspended, enabling long-distance transport and ingestion by marine organisms. Moreover, OPAs inhibit the photo- and bio-degradation of toxic components such as PAHs, prolonging their environmental persistence and exacerbating ecological risks. This review also highlights microplastic-oil aggregates (MOAs) as an emerging OPA type, noting their distinct transport, transformation, and toxic effects. Finally, the current research gaps are summarized, and critical future research directions are outlined.