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61,005 resultsShowing papers similar to Hydrothermal carbonization of plastic waste: A review of its potential in alternative energy applications
Clear[Research progress on the feasibility of carbonization treatment for addressing plastic residual pollution].
This review examines emerging carbonization technologies as alternatives to traditional plastic waste disposal methods like landfilling and incineration. Researchers found that techniques such as co-thermal decomposition and hydrothermal carbonization can convert plastic waste into valuable carbon materials like biochar, which can then be used for microplastic adsorption and soil remediation. The study notes that challenges including unclear reaction mechanisms and high energy costs still hinder large-scale application.
Enhancing sustainable waste management: Hydrothermal carbonization of polyethylene terephthalate and polystyrene plastics for energy recovery
Researchers applied hydrothermal carbonization to PET and polystyrene plastics and found PET produces higher-energy hydrochar with better energy densification (1.37 vs. 1.13) than polystyrene, identifying key structural transformations that determine each material's potential for energy recovery from plastic waste.
The Effect of Hydrothermal Carbonization Temperature on Microplastic Content in Digested Sewage Sludge and Its Relation to the Fuel Properties of Hydrochars
Hydrothermal carbonization temperature was found to influence how microplastics are transformed into hydrochar, affecting the properties of the resulting material. Optimizing this process could convert plastic waste into useful biochar-like materials while reducing the persistence of microplastics in the environment.
Transforming a mixture of real post-consumer plastic waste into activated carbon for biogas upgrading
Researchers explored converting mixed post-consumer plastic waste into activated carbon through pyrolysis and chemical activation for use in biogas purification. The resulting activated carbon demonstrated effective carbon dioxide adsorption capacity comparable to commercial alternatives. The study suggests that transforming hard-to-recycle plastic waste into useful carbon materials could offer a circular economy solution for both plastic pollution and renewable energy production.
A Comprehensive Review on the Thermochemical Treatment of Plastic Waste to Produce High Value Products for Different Applications
This review summarizes methods for converting plastic waste into valuable products using high-temperature chemical processes like pyrolysis and plasma technology. These approaches can produce hydrogen fuel, carbon nanotubes, and other useful materials from plastic that would otherwise become pollution. Reducing plastic waste through better recycling technology is important because most microplastic pollution originates from improperly managed plastic products.
Valorization of plastic waste via chemical activation and carbonization into activated carbon for functional material applications
This review examines how waste plastics can be transformed into activated carbon through chemical activation and carbonization processes. Researchers analyzed various methods for converting different plastic types into porous carbon materials with practical applications. The findings suggest that turning plastic waste into activated carbon offers a valuable alternative to traditional disposal methods.
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.
Insights into using plastic waste to produce activated carbons for wastewater treatment applications: A review
This review explores the potential of converting plastic waste into activated carbon, a material widely used to filter pollutants from water. Researchers found that various plastics including polyethylene, polystyrene, and PET can be transformed into effective adsorbents through controlled heating processes. The approach offers a promising way to simultaneously address plastic waste accumulation and water pollution challenges.
Hydrothermal liquefaction: A promising technology for renewable energy and environmental clean-up applications
This review examines hydrothermal liquefaction (HTL), a technology that converts wet biomass into bio-crude oil under high temperature and pressure, with applications in both renewable energy and environmental cleanup. The authors discuss how HTL can be used to process various waste materials, including plastic-contaminated biomass, into useful fuel products. The technology shows promise as a way to address both energy needs and environmental contamination challenges simultaneously.
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.
Recent Progress in Low-Cost Catalysts for Pyrolysis of Plastic Waste to Fuels
This review evaluated low-cost catalysts — including zeolites, clays, and bimetallic materials — for the pyrolytic conversion of plastic waste into fuel, comparing their effects on product yield and quality and highlighting promising candidates for scaling up plastic-to-fuel processes.
Harvesting marine plastic pollutants-derived renewable energy: A comprehensive review on applied energy and sustainable approach.
This review summarized recent research on recovering renewable energy from marine plastic waste through biological, chemical, and thermal conversion processes, evaluating each pathway's carbon efficiency, global warming potential, and economic viability as part of a circular economy approach to plastic pollution.
Conversion of Polyolefin Waste Into Fuels and Other Valuable Products by Hydrothermal Processing
This research explored ways to convert plastic waste, including polyolefins like polyethylene and polypropylene, into usable fuels and other valuable products through hydrothermal processing. Finding efficient recycling pathways is critical given that only 9% of the 350 million tons of plastic waste generated annually is currently recycled.
Upcycling plastic waste into electrode materials for energy storage applications
Researchers reviewed approaches for upcycling plastic waste into electrode materials for energy storage applications, finding that discarded plastics including polyethylene, polypropylene, and PET can be converted through pyrolysis and chemical activation into carbon-based electrodes for supercapacitors and batteries, addressing both plastic pollution and energy storage challenges simultaneously.
Upcycling Plastic Waste into High Value‐Added Carbonaceous Materials
This review examines methods for converting plastic waste into high-value carbonaceous materials through upcycling techniques. Researchers surveyed approaches for transforming discarded plastics into products such as carbon fibres, water purification absorbents, and energy storage electrodes. The study suggests that upcycling plastic waste into carbon-based materials offers a practical alternative to conventional disposal methods like landfilling and incineration.
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.
Reimagining plastics waste as energy solutions: challenges and opportunities
This review examines the potential of converting plastic waste into energy through waste-to-energy and waste-to-fuel technologies, particularly in developing nations where recycling infrastructure is limited. Researchers assessed various conversion methods including pyrolysis and gasification, evaluating their efficiency and environmental trade-offs. The study emphasizes that energy recovery from plastic waste could help address both the growing plastic pollution crisis and energy needs in underserved regions.
Recovery of plastic waste through its thermochemical degradation: a review
This review examines pyrolysis as a promising technology for recovering valuable chemical compounds from plastic waste, which reached approximately 368 million tons of global production in 2020 alone. Researchers discuss how thermal and catalytic degradation can convert different types of thermoplastics into high-energy-value products. The study also highlights the environmental and health impacts of plastic accumulation, including the effects of microplastic consumption on human and animal health.
Mini-review on remediation of plastic pollution through photoreforming: progress, possibilities, and challenges.
This mini-review examines photoreforming — a solar-powered process that converts plastic waste into valuable chemicals and hydrogen fuel — as a promising approach to reducing plastic pollution while generating clean energy. The authors review progress in the technology, assess remaining challenges such as efficiency and scalability, and place it in the context of other plastic waste remediation strategies.
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.
Harnessing High-Density-Polyethylene-Derived Liquid as a Model Solvent for the Co-Liquefaction of Low-Rank Coals: Toward Sustainable Mesophase Pitch for Making High-Quality Carbon Fibers from Waste Plastics
Despite its title referencing polyethylene recycling and mesophase pitch production, this paper studies an industrial chemistry process for converting waste plastic into carbon fiber precursors via coal liquefaction — not microplastic pollution or environmental health. It examines how hydrogen-rich liquid derived from HDPE plastic can improve coal-to-carbon conversion, and is not relevant to microplastics or human exposure.
A State-of-the-Art Review on the Technological Advancements for the Sustainable Management of Plastic Waste in Consort with the Generation of Energy and Value-Added Chemicals
This review examined technological advances for converting plastic waste into energy and value-added chemicals, covering pyrolysis, gasification, and catalytic processes as sustainable alternatives to landfilling, given that global plastic waste generation reached approximately 380 million tonnes in 2022.
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.
Microplastic Recovery and Conversion Pathways: The Most Recent Advancements in Technologies for the Generation of Renewable Energy
This review examines current technologies for recovering energy from microplastics, evaluating pyrolysis, gasification, electrochemical methods, and hybrid biomass-based approaches in terms of energy balance, carbon conversion, product composition, process efficiency, and scalability. The authors found pyrolysis to be the most scalable method, producing valuable oils and gases, but highlighted that all reviewed technologies face challenges handling the heterogeneous composition and small particle sizes characteristic of MP feedstocks.