Journal ArticleDOI
Chemical recycling of plastics using sub- and supercritical fluids
TLDR
The development of chemical recycling of waste plastics by decomposition reactions in sub-and supercritical fluids is reviewed in this article, where a number of pilot scale or commercial scale plants have been developed and are operating with sub- and super-critical fluids.Abstract:
The development of chemical recycling of waste plastics by decomposition reactions in sub- and supercritical fluids is reviewed. Decomposition reactions proceed rapidly and selectively using supercritical fluids compared to conventional processes. Condensation polymerization plastics such as polyethylene terephthalate (PET), nylon, and polyurethane, are relatively easily depolymerized to their monomers in supercritical water or alcohols. The monomer components are recovered in high yield. Addition polymerization plastics such as phenol resin, epoxy resin, and polyethylene, are also decomposed to monomer components with or without catalysts. Pilot scale or commercial scale plants have been developed and are operating with sub- and supercritical fluids.read more
Citations
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Journal ArticleDOI
Mechanical and chemical recycling of solid plastic waste.
TL;DR: This review presents a comprehensive description of the current pathways for recycling of polymers, via both mechanical and chemical recycling, and discusses the main challenges and some potential remedies to these recycling strategies, thus providing an academic angle as well as an applied one.
Journal ArticleDOI
Recycling carbon fibre reinforced polymers for structural applications: technology review and market outlook.
TL;DR: The major challenges for the sound establishment of a CFRP recycling industry and the development of markets for the recyclates are summarised; the potential for introducing recycled CFRPs in structural components is discussed, and likely promising applications are investigated.
Journal ArticleDOI
Beyond Mechanical Recycling: Giving New Life to Plastic Waste
Ina Vollmer,Michael J. F. Jenks,M Roelands,Robin J. White,Toon van Harmelen,Paul de Wild,Gerard P. van der Laan,Florian Meirer,Jos T. F. Keurentjes,Bert M. Weckhuysen +9 more
TL;DR: This Review aims to inspire both science and innovation for the production of higher value and quality products from plastic recycling suitable for reuse or valorization to create the necessary economic and environmental push for a circular economy.
Journal ArticleDOI
Current state and future prospects of plastic waste as source of fuel: A review
TL;DR: In this paper, the current scenario of the plastic recycling technology is reviewed in order to provide the reader with an in-depth analysis with respect to the pyrolysis of plastic waste as obtained in the current recycling technology.
Journal ArticleDOI
Green materials synthesis with supercritical water
TL;DR: In this article, the chemistry of green materials synthesized with supercritical fluids is described, and the surface control of nanoparticles in supercritical water is also explained, and commercialization of super-critical water processes is discussed.
References
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Journal ArticleDOI
Chemical recycling of carbon fibre reinforced composites in nearcritical and supercritical water
Raúl Piñero-Hernanz,Chris Dodds,Jason R. Hyde,Juan García-Serna,Martyn Poliakoff,Edward Lester,María José Cocero,Sam Kingman,Stephen J. Pickering,K.H. Wong +9 more
TL;DR: The potential for recycling of carbon fiber reinforced epoxy composites in water at supercritical or near-critical conditions was studied in this article, where experiments were devised to identify the significant process parameters that affect fiber reinforced composite recovery potential including temperature, time, oxidant and catalyst concentration.
Journal ArticleDOI
Chemical recycling of carbon fibre composites using alcohols under subcritical and supercritical conditions
Raúl Piñero-Hernanz,Juan García-Serna,Chris Dodds,Jason R. Hyde,Martyn Poliakoff,María José Cocero,Sam Kingman,Stephen J. Pickering,Edward Lester +8 more
TL;DR: In this article, the impact of flow rate and the addition of alkali catalysts (i.e., NaOH, KOH and CsOH from 0.016 to 0.50 mM) on the performance of carbon fiber reinforced composites was investigated.
Journal ArticleDOI
Depolymerization Mechanism of Poly(ethylene terephthalate) in Supercritical Methanol
TL;DR: In this paper, the kinetics of poly(ethylene terephthalate) (PET) depolymerization in supercritical methanol was investigated to develop a chemical recycling process for postconsumer PET bottles PET with a high
Journal ArticleDOI
Characteristics of polyethylene cracking in supercritical water compared to thermal cracking
Takehiko Moriya,Heiji Enomoto +1 more
TL;DR: In this paper, the results of the experiments using n-dodecane (model intermediate of n-alkanes) and 1-Dodecene (model intermediary of l-alkenes) showed significant differences in product species and cracking rate.
Journal ArticleDOI
Recycling of fiber reinforced plastics using depolymerization by solvothermal reaction with catalyst
TL;DR: In this paper, a new recycling method using subcritical fluids where unsaturated polyester (UP) resin in FRP can be efficiently depolymerized to separate glass fiber from filler and polymer.