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Papers
20 resultsShowing papers similar to Optimisation of Process Parameters to Maximise the Oil Yield from Pyrolysis of Mixed Waste Plastics
ClearPlastic 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.
Modeling of pyrolysis reactions of polypropylene using a six-lump model and simulation of pyrolysis process using Aspen
Researchers developed a mathematical model for the pyrolysis of polypropylene — a major component of plastic waste — and simulated the industrial process using chemical engineering software. This modeling supports developing efficient systems to convert waste plastic into useful fuels and chemicals.
Process Optimization of Solvents Assisted Polyethylene Waste Recycling
Researchers optimized solvent-based chemical recycling of polyethylene plastic waste to recover high-quality recycled material. The study demonstrates that chemical recycling can be tuned to maximize yield and quality, offering a scalable alternative to mechanical recycling that degrades plastic properties over time.
The Present and the Future of Polyethylene Pyrolysis
This review examines the pyrolysis of polyethylene as a waste-to-energy strategy, discussing how key process parameters — temperature, catalyst type, and agitation — influence the yield and quality of liquid oils, fuel gases, and solid chars produced from non-biodegradable petroleum-based plastic waste.
Methodology for integrating lumped kinetic models and decision-making frameworks to enhance sustainability of plastic waste pyrolysis
Researchers developed a multi-scale methodology linking laboratory pyrolysis kinetics to high-level sustainability decision-making, demonstrating that using pyrolysis gas for heat supply maximizes circularity while selling LPG byproducts yields the highest profit, offering a replicable framework for evaluating plastic waste conversion options.
Chemical Recycling of Plastics by Microwave‐Assisted High‐Temperature Pyrolysis
Researchers developed a microwave-assisted high-temperature pyrolysis method that continuously breaks down mixed plastic waste and plant oil into useful chemicals like ethylene and propylene. This chemical recycling approach could help divert plastic waste from the environment while producing renewable building blocks for new materials.
Evaluation of Waste-Plastic Pyrolysis Oil as a Potential Feedstock for Lubricant Base Oil Production via Hydroprocessing
Scientists found a way to turn plastic waste into high-quality lubricant oil by heating it up and treating it with special metal catalysts. This process converted over 88% of the waste plastic into useful oil that could replace petroleum-based lubricants. This breakthrough could help reduce plastic pollution while creating valuable products, though more research is needed before it becomes widely available.
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.
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.
Pyrolysis as a value added method for plastic waste management: A review on converting LDPE and HDPE waste into fuel
This review examined pyrolysis as a method to convert low-density and high-density polyethylene plastic waste into fuel, summarizing process parameters, product yields, and fuel quality. Pyrolysis can transform otherwise unrecyclable plastic into diesel-like hydrocarbon fuels. The technology offers a potential solution for managing polyethylene waste while generating energy from materials that would otherwise persist in the environment.
КАТАЛІТИЧНИЙ ПІРОЛІЗ ВІДХОДІВ ПОЛІЕТИЛЕНУ ВИСОКОЇ ЩІЛЬНОСТІ: ФАЗОВИЙ РОЗПОДІЛ ПРОДУКТІВ І ХІМІЧНИЙ СКЛАД
This Ukrainian study examined catalytic pyrolysis of high-density polyethylene plastic waste using various catalysts, finding that catalyst choice strongly controls the composition and proportion of gas, liquid, and solid products. The research frames plastic pyrolysis as a strategy to prevent plastic waste from fragmenting into environmental microplastics by converting it into useful fuel products instead. Identifying optimal catalyst conditions is a step toward practical industrial-scale plastic-to-fuel conversion.
Hydrogen production from plastic waste: A comprehensive simulation and machine learning study
Researchers used computer simulations and machine learning to optimize hydrogen production from polystyrene and polypropylene plastic waste through gasification. They found that increasing the gasification temperature up to 900 degrees Celsius significantly boosted hydrogen output, while higher pressures reduced production. The study demonstrates that converting plastic waste into hydrogen fuel could be an efficient way to address both energy needs and plastic pollution.
Determination of the Hazard of Plastic Waste for Investigation of the Possibility of Their Utilization by Thermal Methods
This study assessed the chemical hazards of plastic waste components to evaluate whether thermal treatment (such as incineration or pyrolysis) could safely process them. Understanding the toxic chemicals released during plastic waste disposal is important for minimizing environmental contamination from plastic waste management.
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.
Hydrothermal liquefaction of plastics: a survey of the effect of reaction conditions on the reaction efficiency
This review summarizes how hydrothermal liquefaction, a process that uses hot pressurized water, can be used to chemically recycle waste plastics. Researchers examined how different reaction conditions affect the efficiency of breaking down plastics into useful products. The study suggests that this technique holds promise as a practical approach to addressing the global plastic waste crisis.
Impact of Metal Impregnation of Commercial Zeolites in the Catalytic Pyrolysis of Real Mixture of Post-Consumer Plastic Waste
This study tested the catalytic pyrolysis of real mixed post-consumer plastic waste using metal-impregnated commercial zeolites, finding that metal loading significantly influenced product yields and selectivity toward fuel-range hydrocarbons.
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.
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.
Process parameter optimization for waste polyethylene terephthalate bottle depolymerization using neutral hydrolysis
Researchers optimized process parameters for the neutral hydrolysis depolymerization of waste polyethylene terephthalate (PET) bottles as a chemical recycling strategy to address growing plastic waste accumulation in landfills. The study identified key conditions that improve depolymerization efficiency, offering a pathway to recover high-quality monomers from post-consumer PET.
Chemical-Physical Characterization of Bio-Based Biodegradable Plastics in View of Identifying Suitable Recycling/Recovery Strategies and Numerical Modeling of PLA Pyrolysis
Researchers characterized several bio-based and biodegradable polymer alternatives to conventional plastics using chemical-physical methods, assessing their suitability for industrial composting and identifying challenges in managing these bioplastics in the existing waste stream.