Evolution of light olefins during the pyrolysis of polyethylene in a two-stage process

Fu, Zhe; Fang, Hua; Yang, Shiqi; Wang, Hangzhou; Cheng, Yi

doi:10.1016/j.jaap.2023.105877

Cited by 16 publications

(5 citation statements)

References 55 publications

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“…From the study by Fan et al [94], that the above 460 • C for the pyrolysis of PS, secondary pyrolysis of volatiles into low molecular weight gaseous hydrocarbons would be enhanced. For PET, a report from Liu et al [36] shows that PET cannot be fully pyrolyzed below 550 • C. According to Zhang et al [43], the pyrolysis range of PP was found to be 425-510 • C. Influenced by density, the pyrolysis range of polyethylene is wide, ranging from 300 • C to 520 • C [95,96]. The optimum pyrolysis temperature range of PVC is 250-350 • C [97].…”

Section: Pyrolysis Temperaturementioning

confidence: 99%

A Review on the Microwave-Assisted Pyrolysis of Waste Plastics

Yang

Shang

et al. 2023

Processes

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The exhaustion of fossil energy and the severe pollution induced by using plastics has forced people to embark on the road to sustainable development. The high value of the recycling of plastics has become an important part of energy conservation. Microwave treatment, owning specific interactions between the electric field and the molecules of treated materials, presents potential advantages in the application of plastic pyrolysis. Therefore, the research status of the microwave-assisted pyrolysis (MAP) of plastics to produce high-value-added liquid oil, gas, and solid carbon was reviewed in this paper. The effects of plastic properties, microwave treatment parameters, microwave absorbers, co-pyrolysis, catalysts, and reactor devices on the process and the products were analyzed. It is essential to optimize the experimental design by studying microwave-assisted co-pyrolysis technology and the application of catalysts, understanding the mechanism of co-pyrolysis to improve product selectivity. At the same time, the continuous MAP device for large-scale plastics treatment still needs to be developed. In addition, developing a large-scale simulation computing research platform for screening catalysts, optimizing processes, and commercial production is required to make the process more efficient.

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Section: Pyrolysis Temperaturementioning

confidence: 99%

A Review on the Microwave-Assisted Pyrolysis of Waste Plastics

Yang

Shang

et al. 2023

Processes

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“…Concerning quantitative composition of pyrolysis oils, during all these years the scientic community has normally used the "peak area percent" as the standard indicator for composition when using GC-MS. [14][15][16][17][18][19][20][21] However, the area percentage does not provide real information on the amount, because the signal intensity is not directly proportional to the concentration. Indeed, aspects such as the molecular weight of the species, the polarity, the selected chromatographic column, the volatility and the temperature inuence the signal obtained.…”

Section: Introductionmentioning

confidence: 99%

Quantification of the composition of pyrolysis oils of complex plastic waste by gas chromatography coupled with mass spectrometer detector

Serras-Malillos,

Perez-Martinez,

Iriondo

et al. 2024

RSC Adv.

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“…For this reason, a significant amount of plastic waste is generated globally (Rahman et al, 2022). In 2018, 360 million metric tons of plastics were produced (Yang et al, 2022;Fu et al, 2023). About 6300 million metric tons of plastic waste have been generated globally from 1950 to 2015 (Geyer et al, 2017;Fu et al, 2023).…”

Section: Introductionmentioning

confidence: 99%

“…In 2018, 360 million metric tons of plastics were produced (Yang et al, 2022;Fu et al, 2023). About 6300 million metric tons of plastic waste have been generated globally from 1950 to 2015 (Geyer et al, 2017;Fu et al, 2023). Only 9% of these plastic wastes are recycled, 12% are incinerated, and the remaining 79% are disposed of in landfills (Geyer et al, 2017;Fu et al, 2023).…”

Section: Introductionmentioning

confidence: 99%

“…About 6300 million metric tons of plastic waste have been generated globally from 1950 to 2015 (Geyer et al, 2017;Fu et al, 2023). Only 9% of these plastic wastes are recycled, 12% are incinerated, and the remaining 79% are disposed of in landfills (Geyer et al, 2017;Fu et al, 2023). As a developed country, the USA generated around 35.4 million tons of plastics in 2017 (Rahman et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

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Catalytic pyrolysis of waste high-density (HDPE) and low-density polyethylene (LDPE) to produce liquid hydrocarbon using silica-alumina catalyst

Rahman,

Mondal,

Ahmed

et al. 2023

J Bangladesh Acad Sci

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Catalytic pyrolysis of waste HDPE and LDPE polyethylene was successfully carried out using a silica-alumina catalyst at 450 °C under N2 atmosphere. The synthesized silica-alumina is mesoporous and shows type IV isotherm. Thermal pyrolysis (without any catalyst) provided 47% wax-like hydrocarbons at 485 °C. On the other hand, more than 80% liquid yield was achieved using silica-alumina catalysts from waste HDPE and LDPE. The highest liquid yield was obtained from LDPE (87.69%) than HDPE (83.25%) at a catalyst-to-plastic ratio of 1:25. The 1H NMR shows that the liquid product does not contain any aromatic compound. The GC-MS, 1H NMR, and FTIR confirmed that the liquid contains linear and branched alkanes and alkenes. J. Bangladesh Acad. Sci. 47(2); 195-203: December 2023

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Evolution of light olefins during the pyrolysis of polyethylene in a two-stage process

Cited by 16 publications

References 55 publications

A Review on the Microwave-Assisted Pyrolysis of Waste Plastics

A Review on the Microwave-Assisted Pyrolysis of Waste Plastics

Quantification of the composition of pyrolysis oils of complex plastic waste by gas chromatography coupled with mass spectrometer detector

Catalytic pyrolysis of waste high-density (HDPE) and low-density polyethylene (LDPE) to produce liquid hydrocarbon using silica-alumina catalyst

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