We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Papers
61,005 resultsShowing papers similar to Mineralization characteristics and behavior of polyethylene microplastics through ozone-based treatment
ClearOzonation facilitates the aging and mineralization of polyethylene microplastics from water: Behavior, mechanisms, and pathways
Ozonation was shown to accelerate the aging and partial mineralization of polyethylene microplastics, with surface oxidation creating more reactive particles susceptible to further degradation. The study provides mechanistic insight into how advanced oxidation processes could contribute to microplastic breakdown in water treatment.
Ozonation and its Application in Wastewater Treatment
Not relevant to microplastics — this review covers ozonation and catalytic ozonation as wastewater disinfection and organic pollutant degradation technologies, with no focus on microplastic contamination.
Reactivity of four model microplastics with ozone.
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.
Effective Removal of Microplastics Using a Process of Ozonation Followed by Flocculation with Aluminum Sulfate and Polyacrylamide
Researchers tested a two-step water treatment process combining ozonation with flocculation to remove microplastics. They found that ozone pretreatment roughened the microplastic surfaces and added chemical groups that dramatically improved removal rates, from 40% to 91%, during the subsequent flocculation step. The findings suggest this combined approach could significantly enhance microplastic removal in conventional water treatment plants.
The impact of ozonation on PET and PVC microplastics in model urban wastewater
Researchers investigated the effects of 6-hour ozonation treatment on PET and PVC microplastics in model urban wastewater, evaluating ozonation as an advanced oxidation process for microplastic degradation and assessing changes in polymer structure and surface chemistry for both plastic types.
Ozone-mediated breakdown of microplastics in aqueous environments
Researchers examined how ozone-based advanced oxidation processes break down microplastics in water treatment settings. They found that while ozone can degrade certain plastics, the effectiveness varies depending on particle size, polymer type, and treatment conditions, and the process may generate nanoplastic byproducts. The study highlights both the promise and limitations of ozone treatment as a strategy for removing microplastics from wastewater.
Aging and Transformation of Polyethylene Microplasticsin UASB Effluents Treated with O3 and O3/H2O2: Physicochemical Changes and Toxicity Assessment
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.
Comparison of surficial modification of micro-sized polyethylenein between by UV/O3 and UVO submerged system
Researchers compared ozone and UV oxidation methods for chemically modifying the surface of polyethylene microplastics in water, finding that different treatment combinations create distinct surface changes. Understanding how weathering alters microplastic surfaces is important for predicting their environmental behavior and toxicity.
Enhancing nanoplastics removal by metal ion-catalyzed ozonation
Researchers found that while standard ozone water treatment reduced the size of polystyrene nanoplastics by over 99% in under five minutes, it left behind smaller fragments and achieved only 16% actual destruction; adding cobalt as a catalyst dramatically improved breakdown to 70% mineralization. The findings reveal an important trade-off: ozonation used for water disinfection may actually generate more, smaller nanoplastic particles unless a catalytic process is included.
Estudo da degradação de microplásticos em água e efluente secundário de estação de tratamento de esgoto por processos baseados em ozônio
This Brazilian study tested ozone-based water treatment processes for degrading polyethylene microplastics in both clean water and secondary wastewater effluent. While ozonation could break down microplastics into smaller fragments and dissolved organic carbon, it did not fully eliminate them, suggesting the need for combined treatment approaches.
The effect of Ozonation on the chemical structure of microplastics
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.
Surface modification of polyethylene microplastic particles during the aqueous-phase ozonation process
Researchers examined the surface modification of polyethylene microplastics during aqueous-phase ozonation, finding that increasing ozone dosage and exposure time progressively increased carbonyl and hydroxyl functional groups on the particle surface. FTIR and XPS analysis showed ozonation altered the surface chemistry of polyethylene microplastics in ways that could change their environmental fate and pollutant adsorption capacity.
Enhanced ozonation of polystyrene nanoplastics in water with CeOx@MnOx catalyst
Researchers developed a core-shell CeOx@MnOx catalyst to enhance ozone-based degradation of polystyrene nanoplastics in water, finding that the catalyst significantly improved removal efficiency. The system offers a promising approach for treating nanoplastic-contaminated water given the difficulty of natural decomposition.
Effects of different oxidants on the behaviour of microplastic hetero-aggregates
Researchers studied how different oxidants (ozone, chlorine, UV) affect the aggregation and settling behavior of microplastics in water treatment, finding that oxidation altered surface chemistry and changed hetero-aggregate formation with natural particles. The results have implications for predicting microplastic removal efficiency in drinking water and wastewater treatment plants.
Changes in physical and chemical properties of microplastics by ozonation
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.
Removal of Organic Micropollutants and Microplastics via Ozonation Followed by Granular Activated Carbon Filtration
A pilot ozonation and granular activated carbon filtration system at a German wastewater treatment plant removed over 80% of organic micropollutants and transformation products, but had minimal impact on microplastic concentrations, indicating a gap in treatment efficacy.
Pre-oxidization-induced change of physicochemical characteristics and removal behaviours in conventional drinking water treatment processes for polyethylene microplastics
Researchers investigated how pre-oxidation treatments alter the physicochemical properties of polyethylene microplastics and found that oxidation changed surface characteristics and influenced removal efficiency during conventional drinking water treatment processes.
Effects of microplastics on the removal of trace organic compounds during ozonation: Oxidation and adsorption of trace organic compounds and byproducts
Microplastics were found to interfere with the ozonation of trace organic compounds in water treatment, with plastic surfaces adsorbing both target pollutants and ozonation byproducts, potentially reducing treatment effectiveness and creating new exposure pathways.
Advanced Oxidation Processes (AOPs) for the Degradation of Micro and Nano Plastic
This review assesses advanced oxidation processes (AOPs) — including photocatalysis, ozone treatment, electrocatalysis, and Fenton reactions — as methods to break down micro- and nanoplastics in water. While AOPs can degrade plastic particles, most currently achieve only modest levels of complete mineralization, meaning significant plastic residues often remain. The study highlights the need to optimize and potentially combine these techniques to develop effective water treatment solutions for removing nanoplastics from drinking water and wastewater.
Comparative Photocatalytic Performance of Gd, Zn, and Ti Metal Oxide Catalysts for Polyethylene Microplastics Removal
Photocatalysis — using light to drive chemical reactions that break down pollutants — shows real promise for degrading microplastics in water. Testing three different metal oxide catalysts, this study found that a modified zinc oxide catalyst could degrade 78% of polyethylene microplastics within two hours under visible light, outperforming both commercial catalysts and the other materials tested. The results point toward surface-engineered ZnO as a potentially practical tool for treating microplastic-contaminated water, though scaling these lab conditions to real-world water treatment remains a significant challenge.
Physicochemical changes in microplastics and formation of DBPs under ozonation
Researchers examined physicochemical changes in thermoplastic polyurethane and polyethylene microplastics during ozonation water treatment, finding that the process can alter microplastic morphology and potentially generate disinfection byproducts.
Insights into the degradation of microplastics by Fenton oxidation: From surface modification to mineralization
Researchers investigated Fenton oxidation of five common microplastic types, finding that while bulk particles showed modest weight losses of around 10%, polystyrene nanoplastics achieved 70% mineralization, with aromatic polymers being more susceptible to degradation.
Transformation of Traditional Wastewater Treatment Methods into Advanced Oxidation Processes and the Role of Ozonation
This paper is not relevant to microplastics research — it reviews advanced oxidation processes with a focus on ozonation for wastewater treatment, covering microbial inactivation and degradation of organic pollutants.
Effects of advanced oxidation processes on leachates and properties of microplastics
Ozonation, Fenton, and heat-activated persulfate treatments were applied to microplastics containing pigment red, finding that all three advanced oxidation processes effectively degraded the released pigment and altered nanoscale surface properties of the treated MPs.