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Evaluation of adsorption potential of microplastics after O3 and O3/H2O2 oxidation treatments
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This Brazilian thesis evaluated how ozone and ozone-hydrogen peroxide oxidation treatments affect the adsorption capacity of microplastics for other pollutants. Researchers found that oxidation altered microplastic surface properties, changing their ability to bind and transport contaminants in water treatment systems.
Microplásticos (MPs) são definidos como pequenas partículas de plástico com menos de 5 mm de tamanho e são considerados hoje em dia como contaminantes emergentes.Devido à sua capacidade de adsorção, os MPs também podem atuar como transportadores contaminantes.Quando os MPs passam pelas estações de tratamento de água equipadas com sistemas avançados de oxidação, podem ser oxidados, alterando suas características de superfície e comportamento de adsorção.Este trabalho avaliou se o ozônio (O3) e a associação
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Interfacial electron modulation and molecular passivation: Suppression mechanisms of microplastics on dual oxidation pathways in peroxone reaction
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Researchers found that pristine microplastics suppress pollutant degradation in ozone-hydrogen peroxide treatment mainly through physical adsorption, while aged microplastics cause stronger inhibition by stabilizing ozone and diverting reactive species — yet the system still achieved high removal efficiency in real water matrices.
The effect of Ozonation on the chemical structure of microplastics
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Ozone treatment of microplastics in water caused oxidative changes to polymer surfaces including carbonyl group formation and surface cracking, which altered hydrophobicity and potentially increased the capacity of treated particles to adsorb contaminants, suggesting that ozonation in water treatment may chemically transform rather than eliminate microplastic hazards.
Changes in physical and chemical properties of microplastics by ozonation
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Researchers examined how ozone treatment in water systems changes the physical and chemical properties of six common types of microplastics. They found that ozonation altered surface roughness, wettability, and chemical composition of the plastics, with some types being more affected than others. The findings are important because these changes could influence how microplastics interact with other pollutants and organisms in treated water.
Reactivity of four model microplastics with ozone.
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Researchers investigated the reactivity of four model microplastic types with ozone, examining how ozone treatment affects the physicochemical properties of microplastics as a potential water treatment strategy for degrading plastic particles.
Aging and Transformation of Polyethylene Microplasticsin UASB Effluents Treated with O3 and O3/H2O2: Physicochemical Changes and Toxicity Assessment
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Researchers treated polyethylene microplastics in UASB wastewater reactor effluents with ozone and ozone/hydrogen peroxide, finding that both processes caused significant surface degradation and chemical transformation without increasing toxicity, suggesting safe application for wastewater treatment.
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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.