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Papers
20 resultsShowing papers similar to Ozone-mediated breakdown of microplastics in aqueous environments
ClearReactivity 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.
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.
Microplastics Degradation in Water: A Review of Advanced Oxidative Processes and Ozonation for Effective Treatment
This review examines advanced oxidative processes (AOPs) and ozonation as emerging technologies for degrading microplastics in drinking water and aquatic environments, covering both identification and quantification methods alongside treatment efficacy. The authors assess the challenges and capabilities of these approaches in addressing the growing concern over microplastic contamination in water supplies.
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.
Advanced oxidation processes for microplastics degradation: A recent trend
This review examined advanced oxidation processes as technologies for breaking down microplastics, including UV treatment, ozone, photocatalysis, and plasma methods. Researchers found that while these approaches can effectively degrade various types of microplastics, the breakdown mostly occurs on particle surfaces, and complete removal remains challenging. The study also warns that partially degraded microplastics may actually become more effective at absorbing and carrying other pollutants.
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.
Current Approaches and Challenges in Advanced Oxidation Processes for Nanoplastic Degradation
This review evaluates current methods for breaking down nanoplastics in water, including ozonation, electrochemical treatment, photocatalysis, and plasma-based processes. Researchers found that while these advanced oxidation techniques show promise, significant gaps remain in treating plastic particles smaller than one micrometer. The study highlights the urgent need for better analytical methods and more effective treatment technologies to address nanoplastic pollution in water sources.
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.
Advanced oxidation processes for the elimination of microplastics from aqueous systems: Assessment of efficiency, perspectives and limitations
This review evaluates advanced oxidation processes as a strategy for breaking down microplastics in water systems, comparing techniques such as photocatalysis, Fenton reactions, and ozonation. Researchers found that while these methods show promise for degrading microplastics into smaller, less harmful molecules, challenges remain in scaling them for practical use. The study identifies key limitations and suggests directions for making these technologies more efficient and applicable to real-world water treatment.
Advanced oxidation in the treatment of microplastics in water: A Review
Researchers reviewed how advanced oxidation processes (AOPs) — chemical methods that generate highly reactive molecules — can break down microplastics in water rather than simply filtering them out. Unlike traditional treatment that just moves microplastics around, some AOPs can fully convert plastic fragments into carbon dioxide and water, making them a promising frontier for actual microplastic destruction in water treatment.
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.
Advances in chemical removal and degradation technologies for microplastics in the aquatic environment: A review
This review summarizes recent advances in chemical methods for breaking down microplastics in water, comparing the effectiveness of various techniques including advanced oxidation processes. Developing better ways to destroy microplastics in water is important for public health because current wastewater treatment plants cannot fully remove these persistent particles before water reaches consumers.
Oxidation of polystyrene nanoparticles using ozonation under catalytic and non-catalytic conditions
This study tested whether ozone treatment — a powerful oxidant used in water treatment — can break down polystyrene nanoparticles, which persist through conventional water treatment processes. Ozonation achieved partial degradation of the nanoplastics under both catalytic and non-catalytic conditions, with surface oxidation and chain scission as the main degradation mechanisms. The findings suggest advanced oxidation processes could be adapted to remove nanoplastics from drinking water, a critical gap in current treatment infrastructure.
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.
Effects of Ozonation and Anaerobic Digestion on the Physicochemical Properties of Low-Density Polyethylene, Polypropylene, and Polyamide 66 Microplastics
Scientists tested whether ozone treatment could help break down tiny plastic particles (called microplastics) that build up in wastewater treatment plants. The ozone changed the surface chemistry of the plastics and made them less stable, but didn't actually reduce the amount of plastic particles. This research is important because microplastics from wastewater can end up in our food and water, so finding better ways to remove or break them down could help protect human health.
Current Approaches and Challenges in Advanced Oxidation Processes for Nanoplastic Degradation
This review examined advanced oxidation processes as techniques for breaking down nanoplastics, including ozonation, electrochemical, photocatalytic, and plasma-based methods. Researchers found that while these approaches show promise for nanoplastic remediation, significant gaps remain in understanding their effectiveness on different plastic types and sizes. The study highlights the need for more standardized research to develop scalable solutions for nanoplastic pollution.
Ozonation 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.
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.
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.
The effect of water ozonation in the presence of microplastics on water quality and microplastics degradation
Researchers tested how ozone-based water treatment affects microplastic particles and found that the process can break down the plastics, releasing harmful chemicals like phthalic acid esters into the treated water. Polyethylene was the most susceptible to degradation, with surface area losses up to about 27%. The study suggests that water treatment plants may unintentionally worsen water quality when microplastics are present during ozonation.