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61,005 resultsShowing papers similar to Degradation of polyvinyl chloride microplastics via an electro-Fenton-like system with a TiO2/graphite cathode
Clear(Digital Presentation) Electrochemical Study of Mxene-Metal Oxide Composites for the Degradation of PVC-Based Microplastics
Researchers investigated MXene-metal oxide composites as modified graphite electrodes for electro-Fenton degradation of polyvinyl chloride (PVC) microplastics, generating hydroxyl radicals via electrochemical oxidation to break down plastic particles. Cyclic voltammetry confirmed the catalytic activity of MXene-TiO2/C modified electrodes for the oxygen reduction reaction, with operating parameters including electrolyte type and concentration evaluated for degradation efficiency.
Vacancy-rich NiFe-LDH/carbon paper as a novel self-supporting electrode for the electro-Fenton degradation of polyvinyl chloride microplastics
Researchers developed a novel electrode made from nickel-iron layered double hydroxide on carbon paper for breaking down PVC microplastics using an electro-Fenton process. The electrode efficiently generated hydroxyl radicals that degraded the microplastics into smaller, less harmful molecules. The study demonstrates that electrochemical methods could offer a sustainable, environmentally friendly approach to converting plastic waste into useful chemical products.
Hydrothermal Fenton-like process for dehydrochlorination and recovering of PVC pipe microplastics in aquatic systems
Researchers developed a hydrothermal Fenton-like process that achieved over 99% dechlorination of PVC microplastics under subcritical water conditions. The process converted the plastic into solid carbon products that retained most of the original carbon content and showed potential for conversion into graphene. The study provides a promising approach for both neutralizing the environmental hazards of PVC microplastics and recovering valuable carbon materials.
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.
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.
Application of Fenton-like processes in the degradation of microplastics
This Croatian-language paper reviews how Fenton-like advanced oxidation processes can degrade microplastics in the environment. The review evaluates the effectiveness of these chemical methods as a potential tool for breaking down plastic particles in water treatment systems.
Enhanced alteration of poly(vinyl chloride) microplastics by hydrated electrons derived from indole-3-acetic acid assisted by a common cationic surfactant
Researchers developed a photo-reductive process that uses hydrated electrons under light exposure to break down PVC microplastics by removing chlorine atoms from the polymer. This novel degradation pathway could offer a new approach for treating PVC — one of the most environmentally persistent and problematic plastic types — in contaminated environments.
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.
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.
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.
The Photo-Fenton Method Aids Microplastic Degradation: Experimental Findings Highlight Significant Differences Among Plastic Types
Researchers tested Fenton-based oxidation methods on three common microplastics (LDPE, PP, PVC) under varying acidity, iron, and hydrogen peroxide conditions, finding that Photo-Fenton is highly effective for LDPE and promising for PVC, but that PP is resistant to all Fenton-based treatments.
Molecular Oxygen Activation by Citric Acid Boosted Pyrite–Photo–Fenton Process for Degradation of PPCPs in Water
Researchers developed a pyrite-based photo-Fenton process enhanced with citric acid that activates molecular oxygen without needing added hydrogen peroxide, enabling cost-effective degradation of polypropylene plastic and organic pollutants under natural sunlight.
Effective degradation of polystyrene microplastics by Ti/La/Co-Sb-SnO2 anodes: Enhanced electrocatalytic stability and electrode lifespan
Researchers developed a new electrode that can break down polystyrene microplastics in water through an electrical process called electrocatalytic oxidation. By adding cobalt as an intermediate layer, they significantly extended the electrode's lifespan without sacrificing its ability to degrade microplastics. The study suggests this technology could offer a practical and durable method for removing microplastic pollution from water.
Developments in advanced oxidation processes for removal of microplastics from aqueous matrices
This review evaluates advanced oxidation processes for removing microplastics from water, finding that photocatalysis, Fenton reactions, and electrochemical methods can effectively degrade microplastics into smaller molecules, offering promising alternatives to conventional non-destructive treatment approaches.
Photo-fenton oxidation of microplastics: Impact of polymer nature
Researchers investigated photo-Fenton oxidation as a treatment for microplastics, finding that degradation efficiency varies significantly by polymer type. Polymers with aromatic structures and those with greater oxidative susceptibility degraded more rapidly under photo-Fenton conditions.
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 Detection of Microplastics in Aqueous Media
Researchers demonstrated that microplastics in water can be detected electrochemically by counting oxygen reduction events when plastic particles collide with a carbon microwire electrode, finding a linear relationship between particle concentration and collision frequency.
Removal of polyethylene terephthalate microplastics from water with reactive oxygen species generated by electrochemical and photoelectrochemical processes
Researchers compared electrochemical and photoelectrochemical methods for breaking down PET microplastics in water using reactive oxygen species. Both approaches achieved similar weight loss of the plastics, around 10-16%, confirming that reactive oxygen species play a central role in degradation. The photoelectrochemical process proved far more energy-efficient, consuming roughly 100 times less electricity per kilogram of microplastic removed.
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.
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.
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.
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.
The Study of Removal of Polyvinyl Chloride (PVC) Particles from Wastewater through Electrocoagulation
Researchers investigated electrocoagulation as a method for removing polyvinyl chloride (PVC) microplastic particles from wastewater, evaluating its efficiency as a low-cost treatment approach using simple chemicals and accessible equipment.
Catalytic degradation of microplastics
This review summarizes catalytic approaches for degrading microplastics in the environment, covering photocatalysis, Fenton reactions, and other advanced oxidation methods, and evaluates their current effectiveness and limitations for addressing real-world microplastic contamination.