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Papers
20 resultsShowing papers similar to Recovery of gaseous fuels through CO2-mediated pyrolysis of thermosetting polymer waste
ClearThermal 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.
Synergistic effects of CO2 on complete thermal degradation of plastic waste mixture through a catalytic pyrolysis platform: A case study of disposable diaper
Researchers developed a catalytic pyrolysis platform using CO2 to completely decompose heterogeneous plastic waste mixtures, demonstrating complete thermal degradation of disposable diaper components into syngas without releasing toxic residues or microplastics.
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.
Disposal of plastic mulching film through CO2-assisted catalytic pyrolysis as a strategic means for microplastic mitigation
Researchers proposed CO2-assisted catalytic pyrolysis of spent agricultural plastic mulching film as an environmentally safer disposal route than conventional incineration or landfilling, which release harmful chemicals and microplastics. Using CO2 as a raw material in the pyrolysis process produced hydrogen and hydrocarbons while reducing harmful byproduct emissions.
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.
Functional use of CO2 to mitigate the formation of bisphenol A in catalytic pyrolysis of polycarbonate
Researchers developed an environmentally sound pyrolysis method using CO2 to reduce bisphenol A formation during the thermal treatment of polycarbonate plastic waste, offering a safer approach to plastic waste valorization.
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.
Optimisation of Process Parameters to Maximise the Oil Yield from Pyrolysis of Mixed Waste Plastics
Researchers optimized the process parameters for thermal pyrolysis of mixed waste plastics to maximize oil yield from HDPE, polypropylene, and polystyrene. The study used response surface methodology to identify ideal conditions for converting plastic waste into pyrolytic oil, supporting chemical recycling as a strategy to reduce plastic pollution.
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.
Mixed Plastic Waste Gasification in a Large Pilot-Scale Fluidized Bed Reactor Operated with Oxygen-Enriched Air and Steam
Researchers tested gasification of mixed plastic waste in a large pilot-scale reactor using oxygen-enriched air and steam to convert hard-to-recycle plastics into useful synthesis gas. They found that the process could effectively handle the heterogeneous mixtures that mechanical recycling typically cannot. The study presents chemical recycling through gasification as a viable strategy for reducing plastic waste that would otherwise contribute to environmental microplastic pollution.
Low-cost activated carbon from the pyrolysis of post-consumer plastic waste and the application in CO2 capture
Researchers prepared low-cost activated carbon from char residue generated during the pyrolysis of post-consumer plastic waste and tested its application for CO2 capture. The study demonstrates that plastic waste pyrolysis byproducts can be repurposed into useful porous materials, offering a dual benefit of chemical recycling and carbon capture.
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.
Co-gasification of Waste Biomass and Plastic for Syngas Production with CO2 Capture and Utilization: Thermodynamic Investigation
Researchers performed a thermodynamic investigation of an integrated plant-wide process for co-gasifying waste biomass and plastics using steam and CO2, designing the system to produce syngas at an H2/CO molar ratio of approximately 2 while incorporating carbon capture and utilization.
Advances of rare earth-based catalysts for recycling CO 2 and plastic waste
This review examined the progress in using rare earth-based catalysts to chemically recycle plastics, converting waste polymers back into useful fuels or feedstocks. The findings point to catalytic recycling as a promising complement to mechanical recycling for reducing plastic waste.
Life Cycle Assessment (LCA) and Environmental Impacts Towards Plastic Waste by Using Pyrolysis
This study used life cycle assessment to evaluate the environmental impact of converting plastic waste into fuel through pyrolysis. The findings suggest pyrolysis can reduce plastic waste in landfills while generating usable energy, though careful emission management is required.
Upcycling of waste plastics: strategies, status-quo, and prospects
This review examines strategies for upcycling waste plastics into valuable products as an alternative to landfilling and incineration, which generate microplastics and carbon emissions respectively. Researchers survey chemical recycling methods including pyrolysis, gasification, and catalytic processes that can convert common plastics like PET, polyethylene, and polystyrene into fuels, chemicals, and new materials. The study highlights the urgent need for more effective recycling technologies to address the growing gap between plastic production and waste management capacity.
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.
Base- or acid-assisted polystyrene plastic degradation in supercritical CO2
Researchers demonstrated that polystyrene plastic can be chemically degraded in supercritical CO₂ at 400°C when assisted by base or acid solutions, finding the process converts PS into hydrogen-rich gases and could offer a feasible route for disposing of plastic waste.
Comprehensive Assessment of Thermochemical Processes for Sustainable Waste Management and Resource Recovery
This review evaluates thermochemical technologies such as pyrolysis, gasification, and liquefaction for converting waste materials, including plastics, into useful chemicals and fuels. Researchers compared the processes based on energy efficiency, product quality, and environmental impact. The study aims to guide the selection of the most appropriate waste-to-value technology for different materials as part of a circular economy approach.
Thermal oxo-degradation of plastic wastes to valuable compounds
Researchers advanced thermal oxo-degradation as an alternative to conventional pyrolysis for plastic waste upcycling, demonstrating that introducing air into the thermal reaction accelerates depolymerization of high-density polyethylene and polypropylene while maintaining energy-dense condensable product yields.