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61,005 resultsShowing papers similar to ElectrochemicalDegradation of PET Microplastics andIts Mechanism
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.
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.
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.
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.
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.
Chemical Synthesis and Environmental Characterization of Polyethylene Terephthalate Microplastics: A comprehensive Analysis of Degradation Mechanisms in the Red Sea Coastal Environment
Researchers synthesized PET microplastics via controlled melt polymerization and compared them with 16 environmental samples from five sites along the Red Sea coast of Jeddah, finding significant oxidative degradation and hydrolytic chain scission in field samples accelerated by high temperature, alkaline pH, and elevated salinity.
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.
A focused review on recycling and hydrolysis techniques of polyethylene terephthalate
This review examines techniques for recycling polyethylene terephthalate (PET), one of the most common plastics found as microplastic pollution. Chemical recycling through hydrolysis shows the most promise for breaking PET back into its original building blocks for reuse. Improving PET recycling is important because reducing plastic waste at the source is one of the most effective ways to decrease microplastic contamination in the environment.
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.
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.
Fate and environmental behaviors of microplastics through the lens of free radical
Researchers reviewed how free radicals influence the fate and environmental behavior of microplastics, including surface degradation, chemical release, and changes in crystallinity and water affinity. The study found that while free radicals can cause weathering and fragmentation of microplastics in the environment, high concentrations of free radicals with strong oxidation potential can also be harnessed to effectively degrade microplastic pollutants.
Accelerated photoaging of microplastic - polyethylene terephthalate: physical, chemical, morphological properties and pesticide adsorption
Researchers subjected polyethylene terephthalate (PET) microplastics to accelerated photoaging under simulated sunlight, characterizing changes in surface chemistry, crystallinity, and mechanical properties over time. Photoaging increased surface oxidation, reduced molecular weight, and enhanced the release of plastic additives, suggesting aged PET microplastics present greater chemical hazard than pristine particles.
Structural decay of poly(ethylene terephthalate) by enzymatic degradation
Researchers examined the structural decay of poly(ethylene terephthalate) through enzymatic degradation as a sustainable recycling strategy, finding this approach requires neither energy nor harsh solvents, offering a promising path for addressing microplastic pollution from PET products.
СУЧАСНЕ УЯВЛЕННЯ ПРО ПЕРЕБІГ ПРОЦЕСІВ ДЕСТРУКЦІЇ ПОЛІЕТИЛЕНТЕРЕФТАЛАТУ
This Ukrainian review summarizes current understanding of PET (polyethylene terephthalate) degradation mechanisms, including hydrolysis, thermal, photodegradation, and mechanical breakdown. Understanding how PET degrades is important because it is one of the most abundant plastics that fragments into microplastics in the environment.
Biodegradation of Poly(Ethylene Terephthalate) Microplastics by Baceterial Communities From Activated Sludge
Scientists isolated bacteria from wastewater treatment sludge that can biodegrade PET plastic, used in plastic bottles and food packaging. The bacteria broke down PET microplastics over a 60-day period, pointing toward a potential biological tool for removing plastic contamination from water treatment systems.
Biodegradation of Poly(Ethylene Terephthalate) Microplastics by Baceterial Communities From Activated Sludge
Scientists isolated bacteria from wastewater treatment sludge that can biodegrade PET plastic, used in plastic bottles and food packaging. The bacteria broke down PET microplastics over a 60-day period, pointing toward a potential biological tool for removing plastic contamination from water treatment systems.
Enhanced activation of peroxymonosulfate by ZIF-67/g-C3N4 S-scheme photocatalyst under visible light assistance for degradation of polyethylene terephthalate
Researchers synthesized a photocatalyst that, combined with peroxymonosulfate under visible light, achieved up to 60% degradation of PET microplastics in water. The study identified sulfate radicals as the primary contributors to degradation and showed that the plastic was broken down into carbon dioxide, methane, and small organic molecules, offering a potential approach for treating microplastic-contaminated water.
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.
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.
Investigating the Physicochemical Property Changes of Plastic Packaging Exposed to UV Irradiation and Different Aqueous Environments
Researchers investigated UV-driven degradation of polypropylene and PET packaging materials under different aqueous conditions, finding that UV exposure caused significant physicochemical changes including increased crystallinity and surface cracking that contribute to microplastic formation.
Enzymatic Degradation of PET plastic
This study tested commercial-grade enzymes for degrading PET plastic and found that enzymatic degradation was effective at laboratory scale but faced challenges for real-world application. Scaling up enzymatic PET recycling could reduce the persistence of plastic waste that eventually fragments into microplastics in the environment.
Degradation of Polyethylene Terephthalate (pet) as Secondary Microplastics Under Three Different Environmental Conditions
Researchers investigated the degradation of PET bottles used as biofilm media in wastewater treatment plants under indoor, outdoor, and UV-irradiated conditions over seven months, measuring secondary microplastic generation. They found that UV irradiation dramatically accelerated PET fragmentation, with microplastic concentrations rising from 15 particles per liter at month one to nearly 249 particles per liter by month seven, with fragments and transparent particles dominating.
Effects of polyethylene and polypropylene microplastics on the DEP degradation mechanisms initiated by •OH and SO4•- in aquatic environments
Researchers used computational chemistry to investigate how polyethylene and polypropylene microplastics affect the breakdown of the plasticizer chemical diethyl phthalate by reactive radicals in water. They found that the microplastics altered the electronic properties of the pollutant and changed its degradation pathways, with some breakdown products being more toxic than the original chemical. The study highlights the importance of considering microplastic interactions when assessing the environmental fate of chemical pollutants.
Changes in the Chemical Composition of Polyethylene Terephthalate under UV Radiation in Various Environmental Conditions.
Researchers exposed polyethylene terephthalate (PET) to UV radiation under controlled humidity conditions and tracked changes in its chemical composition, finding progressive oxidation and chain scission that alter the polymer's surface properties. Understanding how PET degrades under UV exposure is important for predicting how PET microplastics form and what chemical changes make them more or less bioavailable.