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61,005 resultsShowing papers similar to Removal of polyethylene terephthalate microplastics from water with reactive oxygen species generated by electrochemical and photoelectrochemical processes
ClearElectrochemical Degradation of PET Microplastics and Its Mechanism
Researchers investigated whether electrochemical methods could break down PET microplastics in water without additional catalysts. They achieved up to 68% weight loss after just six hours of electrolysis, with temperature being the most important factor for efficiency. The study suggests that electrochemical degradation could be a practical approach for removing PET microplastics from aquatic environments.
ElectrochemicalDegradation of PET Microplastics andIts Mechanism
Researchers investigated the electrochemical degradation of polyethylene terephthalate (PET) microplastics in aquatic environments, finding that after 6 hours of electrolysis without additional catalyst, weight loss reached as high as 68%. The study found that temperature was the most critical factor, that increased PET crystallinity limits degradation efficiency, and that hydroxyl and sulfate radicals are the key active species driving degradation.
Efficient degradation and mineralization of polyethylene terephthalate microplastics by the synergy of sulfate and hydroxyl radicals in a heterogeneous electro-Fenton-activated persulfate oxidation system
Researchers developed a new electrochemical system that broke down over 91% of PET microplastics (the type found in water bottles and food packaging) in water within 12 hours. This cleanup technology works by generating powerful chemical radicals that attack the plastic structure, offering a promising approach for removing microplastics from water before they can enter drinking water systems or accumulate in food chains.
Electrochemical degradation of nanoplastics in water: Analysis of the role of reactive oxygen species
Researchers investigated electrochemical methods for degrading nanoplastics in water and analyzed the role of different reactive oxygen species in the process. They found that the electro-peroxidation process was about 2.6 times more effective than standard electrooxidation, achieving up to 86.8% nanoplastic degradation under optimized conditions. The study presents a promising advanced treatment approach for addressing nanoplastic contamination in water.
Enhancing the degradation of polystyrene and polyethylene terephthalate microplastics in water using electrochemical treatment at neutral pH
Researchers tested an electrochemical method using a boron-doped diamond anode to break down polystyrene and PET microplastics in water at neutral pH. They found that optimizing current intensity and treatment time led to significant degradation of both plastic types, with measurable reductions in particle mass and changes in surface chemistry. The study demonstrates that electro-oxidation could be a viable approach for treating microplastic-contaminated water without needing to add chemicals.
Electrochemical removal of PET and PE microplastics for wastewater treatment
Researchers proposed an electrochemical method for degrading polyethylene and PET microplastics in wastewater using electrogenerated active chlorine species. The study developed a shrinking core-based kinetic model to assess the degradation process, offering a potential new approach for removing microplastics during wastewater treatment.
Comparative Analysis of Electrochemical Oxidation and Biodegradation for Microplastic Removal in Wastewater
Researchers compared electrochemical oxidation and biodegradation for removing polystyrene microplastics from wastewater, finding that electrochemical oxidation achieved superior removal efficiency and could serve as a more effective treatment pathway at wastewater treatment plants.
Microplastic pollution remediation: a comprehensive review on electrochemical advanced oxidation processes (EAOPs) for degradation in wastewater
This review critically analyzed electrochemical advanced oxidation processes (EAOPs) for microplastic degradation in wastewater, examining reactive oxygen species mechanisms and identifying the most promising process configurations and future strategies for scaling up electrochemical microplastic treatment.
Photo-induced degradation of single-use polyethylene terephthalate microplastics under laboratory and outdoor environmental conditions
Researchers tested how sunlight, water, and physical wear work together to break down PET microplastics, the type commonly found in plastic bottles and food packaging. Over 60 days, combined UV light and water exposure caused significant chemical degradation of the plastic surfaces. This matters because as microplastics break down in the environment, they release smaller fragments and potentially harmful chemicals that are easier for organisms to absorb.
Enhancing Microplastic Degradation through Synergistic Photocatalytic and Pretreatment Approaches
Researchers developed a combined photocatalytic and hydrothermal pretreatment approach for degrading PET microplastics. They found that pretreating PET microplastics before photocatalysis improved degradation efficiency by nearly 7 to 9 times compared to untreated particles. The enhanced performance was attributed to increased surface porosity and hydrophilicity of the pretreated microplastics, with hydroxyl radicals identified as the primary driver of degradation.
Enhanced degradation of microplastics by laccase under ambient conditions: Analysis of underlying molecular mechanisms
This study demonstrated that the enzyme laccase can degrade three types of microplastics — polyethylene (PE), PET, and PLA — by breaking apart polymer chains and transforming surface chemical groups, with biodegradable PLA showing the highest degradation efficiency. The mechanistic insights into how reactive oxygen species and electron transfer drive enzymatic degradation provide a foundation for developing enzyme-based treatments to remove microplastics from water and soil.
Electrochemical oxidation of polyethylene microplastics: from efficient removal to sustainable valorization
Scientists developed a new method that can remove up to 98% of tiny plastic particles from water in just three hours using a special electrical process. Instead of just destroying the plastic waste, this technique turns it into useful chemicals like acids that can be used to make other products. This breakthrough could help clean up plastic pollution in our water while also creating a way to recycle plastic waste into valuable materials.
Innovations in chemical degradation technologies for the removal of micro/nano-plastics in water: A comprehensive review
This review summarizes advances in chemical degradation technologies for removing micro- and nanoplastics from water, including photocatalysis, Fenton-based reactions, electrochemical oxidation, and micro/nanomotor approaches. Researchers analyzed the key factors that influence degradation effectiveness, such as particle properties and operating conditions. The study identifies current challenges and outlines future directions for developing practical chemical methods to address plastic pollution in water systems.
Electrochemical remediation of microplastics: Progress and prospects in water treatment
This review examines electrochemical methods for removing microplastics from water, including electrocoagulation, electro-oxidation, and the electro-Fenton process. Evidence indicates that electro-oxidation can achieve removal rates as high as 99 percent under optimized conditions. The study highlights these techniques as promising alternatives for water treatment but calls for further research to scale them up for real-world applications.
Degradation of microplastics by electrocoagulation technology: Combination oxidation and flocculation effects
Researchers evaluated electrocoagulation technology for removing four common types of microplastics from water and discovered that the process works through both oxidation and flocculation mechanisms. Flocculation accounted for the majority of removal (69-77%), while electrochemical oxidation via hydroxyl radicals contributed an additional 8-21% depending on the plastic type. The study found that PVC and polypropylene were removed most effectively due to their hydrophilic properties, and a neutral pH of 7 provided the best balance between the two removal mechanisms.
Photocatalytic strategy to mitigate microplastic pollution in aquatic environments: Promising catalysts, efficiencies, mechanisms, and ecological risks
This review summarizes recent advances in photocatalytic degradation of microplastics, covering catalysts, mechanisms, and reactive oxygen species generation pathways. The authors call for more realistic photocatalytic materials, better mechanistic understanding of degradation intermediates, and quantitative ecological risk assessment of photocatalysis byproducts.
Low environmental impact remediation of microplastics: Visible-light photocatalytic degradation of PET microplastics using bio-inspired C,N-TiO2/SiO2 photocatalysts
Researchers developed a new light-powered cleaning method using modified titanium dioxide to break down PET microplastics in water. The process works under visible light at room temperature, making it more practical and environmentally friendly than other cleanup approaches. This matters because PET is one of the most common plastics found polluting waterways.
Photo-fenton oxidation of microplastics: Impact of polymer nature
Researchers tested photo-Fenton oxidation as a treatment method for microplastics, comparing degradation efficiency across different polymer types. The study found that polymer chemistry significantly influences how quickly microplastics break down under this oxidative treatment.
Strategies for Electrochemical Recycling of Plastic Polyethylene Terephthalate‐Derived Ethylene Glycol Into High‐Value Chemicals
This paper reviews new methods for recycling PET plastic waste, the most common plastic in bottles and packaging, using electricity from renewable sources. By converting PET-derived chemicals into high-value products through electrocatalysis, this approach could help reduce both plastic pollution and microplastic contamination in the environment.
Evaluation of Fenton, Photo-Fenton and Fenton-like Processes in Degradation of PE, PP, and PVC Microplastics
Scientists tested whether Fenton-based chemical processes, which use iron and hydrogen peroxide to create powerful cleaning reactions, could break down common microplastics in water. They found that the photo-Fenton process (using UV light) was effective at degrading polyethylene and PVC microplastics, but polypropylene was resistant to all treatments. This research is important because it explores practical ways to destroy microplastics in water treatment, though not all plastic types respond equally.
Utilizing Electrosorptionfor Efficient Removal ofPolyethylene Microplastics from Water: Critical Factors and MechanisticInsights
An electrosorption method was developed to remove polyethylene microplastics from wastewater, demonstrating improved removal efficiency compared to conventional treatment, especially for smaller particles that typically escape standard wastewater treatment plants.
Utilizing Electrosorption for Efficient Removal of Polyethylene Microplastics from Water: Critical Factors and Mechanistic Insights
Researchers developed an electrosorption method using graphite felt electrodes to remove tiny polyethylene microplastics from water. By optimizing voltage, flow rate, and salt concentration, they achieved a removal efficiency of nearly 97%. The study lays groundwork for a scalable technology that could help capture microplastics that slip through conventional wastewater treatment systems.
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.
Integration of Photocatalysis and Membrane Technology as a Hybrid System for Microplastic Degradation in Wastewater
Researchers evaluated a hybrid system combining TiO2 photocatalysis with membrane filtration for degrading microplastics in wastewater. The photocatalytic membrane reactor demonstrated effective removal and degradation of polyethylene, polypropylene, and PET microplastics, suggesting that integrated photocatalytic-membrane systems could improve microplastic removal beyond what conventional wastewater treatment achieves.