Plastic waste upcycling toward a circular economy

Zhao, Xianhui; Korey, Matthew; Li, Kai; Copenhaver, Katie; Tekinalp, Halil; Çelik, Serdar; Kalaitzidou, Kyriaki; Ruan, Roger; Ragauskas, Arthur J.; Ozcan, Soydan

doi:10.1016/j.cej.2021.131928

Cited by 263 publications

(142 citation statements)

References 119 publications

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“…Since this model covers plastics in an aggregated way and data availability is scarce, polymer-specific chemical recycling routes are not part of the model yet. Also other plastic waste treatment methods like gasification or emerging technologies like photoreforming are not yet included [63] . With increasing data availability, the model will be updated to include further promising plastic waste treatment methods.…”

Section: Discussion Of Limitationsmentioning

confidence: 99%

The plastics integrated assessment model (PLAIA): Assessing emission mitigation pathways and circular economy strategies for the plastics sector

et al. 2022

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Section: Discussion Of Limitationsmentioning

confidence: 99%

The plastics integrated assessment model (PLAIA): Assessing emission mitigation pathways and circular economy strategies for the plastics sector

et al. 2022

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“…The conversion and/or recycling of plastic waste encompasses any method where plastic waste is transformed rather than discarded. [227,228]. Plastics have inherent properties to be reused, and this is attributed to the quality of the recovered waste fraction.…”

Section: Accumulation Of Plastic Waste In the Environmentmentioning

confidence: 99%

“…These new materials can be obtained through different processes, and each process depends on the characteristics and destination of plastic waste. Recently, a study presented by Zhao et al (2022) [228] showed different recycling routes for plastic waste. Different processes have already been investigated according to each destination, as they need to be applied to specific plastic waste due to their advantages and disadvantages, as shown in Figure 2.…”

Section: Accumulation Of Plastic Waste In the Environmentmentioning

confidence: 99%

Conversion of Plastic Waste into Supports for Nanostructured Heterogeneous Catalysts: Application in Environmental Remediation

et al. 2021

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Plastics are ubiquitous in our society and are used in many industries, such as packaging, electronics, the automotive industry, and medical and health sectors, and plastic waste is among the types of waste of higher environmental concern. The increase in the amount of plastic waste produced daily has increased environmental problems, such as pollution by micro-plastics, contamination of the food chain, biodiversity degradation and economic losses. The selective and efficient conversion of plastic waste for applications in environmental remediation, such as by obtaining composites, is a strategy of the scientific community for the recovery of plastic waste. The development of polymeric supports for efficient, sustainable, and low-cost heterogeneous catalysts for the treatment of organic/inorganic contaminants is highly desirable yet still a great challenge; this will be the main focus of this work. Common commercial polymers, like polystyrene, polypropylene, polyethylene therephthalate, polyethylene and polyvinyl chloride, are addressed herein, as are their main physicochemical properties, such as molecular mass, degree of crystallinity and others. Additionally, we discuss the environmental and health risks of plastic debris and the main recycling technologies as well as their issues and environmental impact. The use of nanomaterials raises concerns about toxicity and reinforces the need to apply supports; this means that the recycling of plastics in this way may tackle two issues. Finally, we dissert about the advances in turning plastic waste into support for nanocatalysts for environmental remediation, mainly metal and metal oxide nanoparticles.

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“…To date, many excellent reviews have been devoted to chemical and catalytic recycling of plastic waste, [80][81][82][83][84][85][86][87][88][89] but a comprehensive review focused on photocatalytic conversion will be valuable but is still unknown. Moreover, the previous reviews on photocatalytic conversion have mainly been dedicated to the photodegradation of plastics.…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic Conversion of Plastic Waste: From Photodegradation to Photosynthesis

Chu

Zhang

Zhao

et al. 2022

Advanced Energy Materials

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Plastic waste remains a global challenge due to the massive amounts being produced without satisfactory treatment technologies for recycling and upcycling. Photocatalytic processes are emerging as green and promising approaches to upcycle plastics into value‐added products under mild conditions using sunlight as the energy source. In this review, the recent advances in plastic conversion through photocatalysis have been comprehensively summarized. Special emphasis is placed on the photocatalytic mechanism and the selective CC and CH bond transformations of plastics to access fuels, chemicals, and materials. Finally, the challenges and the perspectives on establishing a new paradigm toward a sustainable and circular plastic economy are also put forward.

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Plastic waste upcycling toward a circular economy

Cited by 263 publications

References 119 publications

The plastics integrated assessment model (PLAIA): Assessing emission mitigation pathways and circular economy strategies for the plastics sector

The plastics integrated assessment model (PLAIA): Assessing emission mitigation pathways and circular economy strategies for the plastics sector

Conversion of Plastic Waste into Supports for Nanostructured Heterogeneous Catalysts: Application in Environmental Remediation

Photocatalytic Conversion of Plastic Waste: From Photodegradation to Photosynthesis

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