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61,005 resultsShowing papers similar to Synergistic co-pyrolysis of corn stover and refuse-derived fuel with microplastics: Kinetic and thermodynamic study
ClearUnraveling Co-Pyrolysis Mechanisms for Municipal Sludge and Microplastics: Thermodynamic, Kinetic, and Product Insights
Wastewater treatment plants produce large quantities of sewage sludge, which is often contaminated with microplastics from household and industrial sources. This study tested whether co-pyrolyzing sludge with polyethylene (HDPE) or PET plastic waste at high temperatures could improve energy recovery while processing microplastics. Adding 30% HDPE maximized the overall pyrolysis efficiency and changed the chemical reaction pathways, while PET had stronger facilitating effects at mid-range temperatures. The research suggests that co-pyrolysis could serve the dual purpose of sludge disposal and microplastic destruction, though the altered reaction kinetics and product mixtures require careful management.
Synergistic Effects and Mechanistic Insights into the Co-Hydropyrolysis of Chilean Oak and Polyethylene: Unlocking the Potential of Biomass–Plastic Valorisation
This paper is not about microplastics; it studies the co-pyrolysis of wood biomass and polyethylene plastics in a hydrogen atmosphere to produce cleaner bio-oil, investigating synergistic thermochemical reactions.
A Review on Biofuels and Chemicals Production by Co-pyrolysis of Solid Biomass Feedstocks and Non-degradable Plastics
This review examines co-pyrolysis processes that convert mixtures of plastic waste and solid biomass into fuels and chemical products. Co-pyrolysis offers a way to valorize plastic waste that would otherwise break down into microplastics in the environment, while also producing usable energy.
Plastic regulates its co-pyrolysis process with biomass: Influencing factors, model calculations, and mechanisms
Researchers investigated co-pyrolysis of plastics and biomass, finding that varying the hydrogen-to-carbon ratio of biomass feedstocks influences synergistic effects on bio-oil quality, offering a strategy to improve plastic waste valorization.
Pyrolysis behavior of sewage sludge coexisted with microplastics: Kinetics, mechanism, and product characteristics
Researchers investigated the co-pyrolysis behavior of sewage sludge mixed with polyethylene and polylactic acid microplastics. They found that the presence of microplastics improved the overall pyrolysis performance and altered the composition of the resulting bio-oil and gas products. The study suggests that understanding how microplastics in sewage sludge affect thermal treatment could help optimize waste processing at wastewater treatment plants.
Catalytic co-pyrolysis of oil palm empty fruit bunches (EFB) and surgical face mask (SFM) wastes: Thermo-kinetic study, ANN model fitting, and synergistic effect
Researchers studied the co-pyrolysis (simultaneous heat-breakdown) of oil palm waste and surgical face mask plastic to convert both into usable fuel, finding that a zeolite catalyst reduced the energy needed for the reaction by about 14%. This approach could help manage the surge of plastic PPE waste that would otherwise contribute to microplastic pollution in landfills and the environment.
Recent Progresses in Pyrolysis of Plastic Packaging Wastes and Biomass Materials for Conversion of High-Value Carbons: A Review
This review examines pyrolysis of plastic packaging waste and biomass materials as routes to fuel and chemical recovery, comparing process conditions, product yields, and co-pyrolysis synergies. The authors find that blending plastics with biomass can improve fuel quality and reduce char formation, advancing the case for mixed-feedstock pyrolysis systems.
Co-Pyrolysis of Plastic Waste and Lignin: A Pathway for Enhanced Hydrocarbon Recovery
Researchers investigated co-pyrolysis of plastic waste (polypropylene, polyethylene) with lignin biomass at various ratios and temperatures to recover valuable hydrocarbons. They found that mixing plastics with lignin enhanced the recovery of higher-value chemical products, with the best results at 600 degrees Celsius using polyethylene-lignin mixtures. The study demonstrates a pathway for converting both plastic and biomass waste into useful chemical feedstocks, potentially reducing plastic pollution.
The interaction between sludge and microplastics during thermal hydrolysis of sludge
Researchers studied how polyethylene and PET microplastics behave during thermal hydrolysis of municipal sludge at temperatures between 120 and 180 degrees Celsius. They found a mutual promotion relationship where sludge degradation accelerated microplastic aging, while the microplastics enhanced the breakdown of organic compounds in the sludge. The study suggests that thermal hydrolysis of sludge shows promise for simultaneously treating both sludge and microplastic contamination.
Microplastic degradation as a sustainable concurrent approach for producing biofuel and obliterating hazardous environmental effects: A state-of-the-art review
This review explores approaches to degrading microplastics through thermal and biological methods, which could simultaneously reduce environmental pollution and produce usable biofuels. Researchers highlight how certain microorganisms and heat-based processes can break down microplastics into simpler compounds that can serve as energy sources. The study suggests these dual-purpose strategies could help address both the plastic pollution crisis and energy security challenges.
Assessment of Co-Pyrolysis of Polypropylene with Triacylglycerol-Based Waste Biomass to Obtain Sustainable Hydrocarbons
Despite its title referencing polypropylene co-pyrolysis, this paper studies the thermal breakdown of polypropylene plastic waste combined with biodiesel industry byproducts to produce renewable hydrocarbon fuels — not microplastic pollution. It examines chemical product yields from waste-to-fuel conversion, and is not relevant to microplastics or human health.
How microplastics affect sludge pyrolysis behavior: Thermogravimetry-mass spectrum analysis and biochar characteristics
Microplastics in sewage sludge alter how the sludge burns during pyrolysis: PVC microplastics sped up decomposition while polyethylene and polypropylene slowed it down. This matters because sewage sludge from wastewater plants contains thousands of microplastic particles per kilogram, and understanding how they change the energy recovery and byproduct quality of sludge treatment helps improve the management of this widespread microplastic sink.
Fate of microplastic during pyrolysis of sewage sludge
Researchers investigated what happens to microplastics embedded in sewage sludge when sludge is treated by pyrolysis, a high-temperature thermochemical process. Pyrolysis effectively destroyed most microplastic particles, but some residual polymer-derived compounds partitioned into the pyrolysis products.
Co-Valorisation Energy Potential of Wastewater Treatment Sludge and Agroforestry Waste
Not relevant to microplastics — this study characterizes the energy potential of various biomass feedstocks including sewage sludge, forestry waste, swine manure, cork, and biochar as renewable energy co-valorisation resources, finding substantial variation in calorific values across materials.
Upgrading Mixed Agricultural Plastic and Lignocellulosic Waste to Liquid Fuels by Catalytic Pyrolysis
Researchers compounded mixed agricultural plastic waste (netting, twine, film) and lignocellulosic residues (bluegrass straw/chaff) in a twin-screw extruder and subjected the homogenised material to thermal and catalytic pyrolysis (500-600 C) to characterise liquid fuel yields from this otherwise burned or landfilled agricultural waste stream.
A review of prospects and current scenarios of biomass co-pyrolysis for water treatment
This review examines biomass co-pyrolysis as a strategy to produce enhanced biochars for water treatment, finding that combining different biomass feedstocks can improve biochar surface area and porosity, making the resulting materials more effective adsorbents for removing contaminants including microplastics.
Towards fuels production by a catalytic pyrolysis of a real mixture of post-consumer plastic waste
Researchers tested in-situ catalytic pyrolysis of a real mixed post-consumer plastic waste stream from mechanical-biological treatment facilities, producing a liquid fuel fraction with properties comparable to gasoline, kerosene, and diesel.
The Pyrolysis of Biosolids in a Novel Closed Coupled Pyrolysis and Gasification Technology: Pilot Plant Trials, Aspen Plus Modelling, and a Techno-Economic Analysis
Researchers tested a novel closed-coupled pyrolysis and gasification system for processing biosolids (sewage sludge), measuring energy recovery and the fate of contaminants including microplastics during thermal treatment. The system achieved high energy recovery while thermally destroying microplastics present in the biosolids.
Thermogravimetric analysis and kinetic study of marine plastic litter
This study characterized the composition and thermal degradation behavior of collected marine plastic debris, exploring pyrolysis as a method for recovering energy from plastic waste that cannot be recycled. Managing the large volumes of plastic debris in the ocean requires both prevention and end-of-life treatment solutions.
Comprehensive Kinetic Study of PET Pyrolysis Using TGA
Researchers conducted a comprehensive kinetic study of PET plastic pyrolysis using thermogravimetric analysis at multiple heating rates, determining activation energies and reaction mechanisms that inform waste-to-fuel conversion processes.
Perspectives on Thermochemical Recycling of End-of-Life Plastic Wastes to Alternative Fuels
This review examined thermochemical recycling technologies including pyrolysis, liquefaction, and gasification for converting plastic waste into clean fuels, discussing operating principles, barriers, and the potential for co-processing plastics with biomass.
Exploration of Pyrolysis Behaviors of Waste Plastics (Polypropylene Plastic/Polyethylene Plastic/Polystyrene Plastic): Macro-Thermal Kinetics and Micro-Pyrolysis Mechanism
Researchers investigated the pyrolysis behavior of three common plastics — polyethylene, polypropylene, and polystyrene — using both experimental analysis and molecular dynamics simulations. The study determined activation energies and decomposition mechanisms for each plastic type, finding that polystyrene had the lowest thermal stability, which informs strategies for plastic waste recycling through pyrolysis.
Fate of microplastic during pyrolysis of sewage sludge
Researchers examined how pyrolysis as a sewage sludge treatment method affects the fate of embedded microplastics, finding that thermal treatment largely destroys plastic particles. However, some polymer-derived volatile compounds transferred to pyrolysis gases and oils, suggesting that microplastic destruction does not eliminate all associated chemical risks.
Thermal and catalytic pyrolysis of a real mixture of post-consumer plastic waste: An analysis of the gasoline-range product
Researchers performed thermal and catalytic pyrolysis on real post-consumer plastic waste mixtures using various catalysts, finding that polymer type strongly influenced gas, liquid, and char yields, and that zeolite catalysts produced gasoline-range hydrocarbon liquids with commercially viable compositions from mixed plastic feedstocks.