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Colloid and Interface Science for Understanding Microplastics and Developing Remediation Strategies
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This perspective article argues that principles from colloid and interface science are essential for understanding how microplastics behave in the environment. Researchers explain how surface chemistry, particle shape, and roughness govern how microplastics interact with water, soil, and other pollutants. The study identifies wastewater treatment plants as critical hotspots where microplastics accumulate in sludge and get reintroduced to the environment through agricultural application.
Microplastics (MPs) originate from industrial production of <1 mm polymeric particles and from the progressive breakdown of larger plastic debris. Their environmental behavior is governed by their interfacial properties, which dominate due to their small size. This Perspective highlights the complex surface chemistry of MPs under environmental stressors and discusses how physical attributes like shape and roughness could influence their fate. We further identify wastewater treatment plants (WWTPs) as critical hotspots for MP accumulation, where the MPs are inadvertently transferred to sewage sludge and reintroduced into the environment. We emphasize the potential of colloid and interfacial science not only to improve our fundamental understanding of MPs but also to advance mitigation strategies in hotspots such as WWTPs.
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Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.