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20 resultsShowing papers similar to Oxidation of polystyrene nanoparticles using ozonation under catalytic and non-catalytic conditions
ClearEnhancing 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.
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.
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.
Plasma-assisted destruction of polystyrene nanoplastics
Researchers developed a plasma-based method to destroy polystyrene nanoplastics in water, achieving a 98.4% removal rate within one hour of treatment. The process breaks the nanoplastics down into very short polymer fragments, and proved more effective than traditional ozone treatment. The study presents a promising new technology for addressing nanoplastic contamination in water purification systems.
Degradation of Polystyrene Nanoplastics in UV/NaClO and UV/PMS Systems: Insights into Degradation Efficiency, Mechanism, and Toxicity Evaluation
Researchers tested two advanced oxidation methods for breaking down polystyrene nanoplastics in water and found that while both effectively reduced water cloudiness, neither completely destroyed the plastic particles. The UV/PMS system achieved about 29% mineralization compared to only 7% for UV/NaClO, though both generated some toxic byproducts. The study suggests that advanced oxidation processes show promise for nanoplastic removal from water but require further optimization to achieve complete degradation.
Effect of ozonation on the morphological characteristics and adsorption behavior of polystyrene microplastics in aqueous environments
Researchers exposed polystyrene microplastics to ozone treatment and found that the aging process made the particles smaller, more negatively charged, and better at absorbing pollutants from water — meaning weathered microplastics in the environment may carry more harmful chemicals than fresh ones.
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.
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.
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.
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.
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 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.
Recent advances and challenges in advanced oxidation processes for degradation of nano- and microplastics in water: a critical review
This critical review evaluates four main advanced oxidation processes — ozonation, photocatalysis, Fenton reactions, and electrochemical oxidation — for breaking down nano- and microplastics in water, summarizing what has been achieved and where major technical gaps remain. Developing effective degradation technologies is urgently needed because conventional water treatment systems do not reliably remove small plastic particles.
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 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.
A comparative study on the stability and coagulation removal of aged vs. nonaged nanoplastics in surface water
Researchers used palladium-doped nanoplastics as tracers to compare how environmentally aged and pristine nanoplastics behave during water treatment coagulation. They found that ozone-aged nanoplastics developed more oxygen-containing surface groups, making them harder to remove through conventional coagulation, while solar-aged particles showed mainly physical changes. The study suggests that current drinking water treatment processes may be less effective at removing aged nanoplastics than fresh ones.
Natural Pyrolusite-Catalyzed Ozonation for Nanoplastics Degradation
This study tested a new water treatment method that uses a natural mineral called pyrolusite combined with ozone to break down nanoplastics. Researchers found that this approach removed up to 75% of total organic carbon from polystyrene nanoplastics in just 30 minutes, and the mineral catalyst could be reused multiple times with minimal loss in effectiveness. The results suggest this could be a sustainable, environmentally friendly strategy for removing nanoplastics from drinking water.
Treatment of microplastics in water by anodic oxidation: A case study for polystyrene
Anodic oxidation (electrooxidation) was tested as a method for degrading polystyrene microplastics suspended in water. The electrochemical treatment showed progressive microplastic degradation, demonstrating potential for electrooxidation as a water treatment approach targeting suspended plastic particles.
Application of advanced oxidation processes for the removal of micro/nanoplastics from water: A review
This review summarizes methods for breaking down and removing microplastics and nanoplastics from water using advanced chemical processes that generate powerful cleaning agents like hydroxyl radicals. While these methods can shrink and partially degrade plastic particles, they cannot yet fully break them down, meaning some residue remains. The research is important for developing better water treatment systems that could reduce human exposure to microplastics through drinking water.
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.