Microwave-assisted pyrolysis of waste plastics for their resource reuse: A technical review

Hu, Xuan; Ma, Dong; Zhang, Guangyi; Ling, Mengxue; Hu, Qiaoling; Liang, Kangyi; Lu, Jiangang; Zheng, Yifan

doi:10.1016/j.crcon.2023.03.002

Cited by 30 publications

(13 citation statements)

References 101 publications

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“…Microwave‐assisted PVC recycling is an innovative method using microwave irradiation to facilitate the rapid and energy‐efficient degradation of PVC waste (see Figure 12). 209 By subjecting PVC to microwave energy, the polymer undergoes selective heating, leading to the breakdown of the material into smaller chains 209,210 . This approach offers several advantages and unique features.…”

Section: Innovative Pvc Recycling Technologiesmentioning

confidence: 99%

“…First, microwave‐assisted PVC recycling enables a rapid and energy‐efficient process compared to conventional thermal methods. The selective heating properties of microwaves allow for precise targeting of PVC, minimizing the degradation of other materials present in the waste stream 210 . Another significant advantage is the enhanced safety and reduced environmental impact associated with this method 211 .…”

Section: Innovative Pvc Recycling Technologiesmentioning

confidence: 99%

“…209 By subjecting PVC to microwave energy, the polymer undergoes selective heating, leading to the breakdown of the material into smaller chains. 209,210 This approach offers several advantages and unique features. First, microwaveassisted PVC recycling enables a rapid and energy-efficient process compared to conventional thermal methods.…”

Section: Microwave-assisted Pvc Recyclingmentioning

confidence: 99%

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Recent advances in polyvinyl chloride (PVC) recycling

Ait‐Touchente,

Khellaf,

Raffin

et al. 2023

Polymers for Advanced Techs

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Polyvinyl chloride (PVC) recycling is crucial for mitigating the environmental impact of PVC wastes, which take decades to decompose in landfills. This review examines the current state of PVC recycling processes, focusing on challenges and future research opportunities. It explores the types and sources of PVC wastes, including post‐consumer, industrial, and construction wastes. Conventional recycling methods such as mechanical, thermal, and chemical recycling are discussed, highlighting their advantages, limitations, and successful applications. Furthermore, recent advances in PVC recycling, including biological, plasma‐assisted, and solvent‐based recycling, are explored, considering their potential benefits and challenges. The review emphasizes the European context of PVC recycling, as the region has implemented regulatory initiatives and collaborations. It points out the Circular Economy Action Plan and directives targeting PVC waste management, which have promoted recycling and established a supportive framework. Challenges of current PVC recycling methods and technologies, such as low yield and high energy consumption, are identified. The review calls for the development of efficient and cost‐effective recycling technologies, along with improvements in recycling infrastructure and consumer awareness. Assessing the environmental and economic impacts, PVC recycling significantly reduces greenhouse gas emissions and conserves resources compared to virgin PVC production. The economic benefits include job creation and reduced raw material costs.

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Section: Innovative Pvc Recycling Technologiesmentioning

confidence: 99%

Section: Innovative Pvc Recycling Technologiesmentioning

confidence: 99%

Section: Microwave-assisted Pvc Recyclingmentioning

confidence: 99%

See 1 more Smart Citation

Recent advances in polyvinyl chloride (PVC) recycling

Ait‐Touchente,

Khellaf,

Raffin

et al. 2023

Polymers for Advanced Techs

View full text Add to dashboard Cite

show abstract

“…At that time, this invention was considered as the only alternative to a large and heavy steam engine: it did not need to be heated for so long before starting; however, the design required a very powerful water-cooling system and, above all, huge volumes of gas, and the efficiency was no more than 4% [61]. 141 Engineer N. A. Otto saw the potential in the Lenoir engine and in 1861 determined that the engine would work better if ethyl alcohol was used as a raw material. 142 A year later, he began to experiment with a four-stroke engine, the principle of which was theoretically described and patented by the French engineer Alphonse Beau de Rochas in the same year, independently of Otto.…”

Section: Perspective Gasoline Engine Technologiesmentioning

confidence: 99%

“…In 1859, Lenoir patented the first internal combustion gas engine. At that time, this invention was considered as the only alternative to a large and heavy steam engine: it did not need to be heated for so long before starting; however, the design required a very powerful water-cooling system and, above all, huge volumes of gas, and the efficiency was no more than 4% [61] . Engineer N. A. Otto saw the potential in the Lenoir engine and in 1861 determined that the engine would work better if ethyl alcohol was used as a raw material .…”

Section: Perspective Gasoline Engine Technologiesmentioning

confidence: 99%

Advanced Progress and Prospects for Producing High-Octane Gasoline Fuel toward Market Development: State-of-the-Art and Outlook

Abdellatief,

Ershov,

Savelenko

et al. 2023

Energy Fuels

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The development of oil refining in advanced nations is mostly focused on low-carbon fuel. Similar efforts are being made to improve the fuel efficiency of internal combustion engines, which will result in lower exhaust emissions. Furthermore, by assessing the indicated trends in engine building, it is important for fuel manufacturers to understand how the requirements for gasoline quality indicators will change, primarily for its knock resistance. The aim of the current comprehensive article is to study the state-of-the-art review emphasizing recent progress and prospects for producing high-octane gasoline fuel toward market development. The market for branded gasoline and multifunctional additives, involving friction modifiers, corrosion inhibitor components, as well as detergent components is presented. Furthermore, market development trends and quality requirements for motor gasoline, involving antiknocking characteristics and gasoline oxygenated compounds as additives, are exhibited. Besides, perspective gasoline engine technologies, including different types of engines, are declared. The formulation of effective gasoline surrogates is a challenging task due to advanced combustion strategies, engine design, and variable operating conditions in spark-ignition engines. The extensive development of direct injection and turbocharging technologies is constrained by the actual compression ratio of engines. Likewise, an increase in the knock resistance of the produced gasoline would further increase the compression ratio and efficiency of new internal combustion engines.

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Optimizing Electron‐Beam Photothermal Pyrolysis Parameters for Enhanced Molecular Biodegradability of Polyvinyl Chloride Plastics

Porandla

2024

Macro Materials & Eng

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Polyvinyl chloride (PVC), a synthetic plastic notable for harmful emissions during deterioration, has potential to be molecularly adjusted by photo‐oxidative ultraviolet degradation. This research investigates the influence of electron beam irradiation and near‐infrared photothermal treatment utilizing gold nanoparticles to establish the optimized molecular weight and beam time exposure for biodegradable PVC properties while maintaining a minimum tensile strength as measured through the ratio of peak tension force by cross sectional area. PVC powder samples with number‐average molecular weights ranging from 20.0 to 90.0 kDa and varying exposure times of a 100 kGy electron beam from 80 to 115 ms are employed for the study. Outcomes from PVC irradiation reveal the optimal parameters for inducing biodegradability in samples: an e‐beam exposure duration of 95 ms applied to PVC powder with a sample molecular weight of 20.0 kDa. Analysis of the ratio of number average molecular weight and weight average molecular weight demonstrates that shorter irradiation durations result in lower molecular weights and molecular weight is directly proportional to Tg and crystallinity. Future work aims to scale up the procedure to industrial applications and investigate the treatment's applicability to a variety of thermoplastics.

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Microwave-assisted pyrolysis of waste plastics for their resource reuse: A technical review

Cited by 30 publications

References 101 publications

Recent advances in polyvinyl chloride (PVC) recycling

Recent advances in polyvinyl chloride (PVC) recycling

Advanced Progress and Prospects for Producing High-Octane Gasoline Fuel toward Market Development: State-of-the-Art and Outlook

Optimizing Electron‐Beam Photothermal Pyrolysis Parameters for Enhanced Molecular Biodegradability of Polyvinyl Chloride Plastics

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