Thermal pyrolysis production of liquid fuel from a mixture of polyethylene terephthalate and polystyrene

Ayodeji, Simon O.; Oni, Taiwo O.

doi:10.1002/htj.21450

Cited by 9 publications

(5 citation statements)

References 13 publications

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“…Like biomass pyrolysis, pyrolysis of waste plastics is a significant approach for recycling plastic wastes. Rather than mechanical and chemical processing, pyrolysis of plastic materials is a flexible approach that can produce valueadded chemicals and energy-rich liquid fuel along with municipal wastes, biomass, and electronic wastes [16]. Among a variety of plastics, PET plastics are widely used in everyday life.…”

Section: Introductionmentioning

confidence: 99%

Co-pyrolysis Characteristics and Synergistic Interaction of Waste Polyethylene Terephthalate and Woody Biomass towards Bio-Oil Production

Anandaram

Srivastava

Vijayakumar³

et al. 2022

Journal of Chemistry

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In this study, the impacts of co-pyrolyzing wood-based biomass from Ficus benghalensis with PET on liquid oil output, reactivity, and heating values were investigated. The effects of temperature on the product distribution of individual pyrolysis and the biomass-plastic ratio on co-pyrolysis were investigated. For individual pyrolysis, a maximum amount of 40.8 wt (%) liquid oil was obtained from biomass at 450°C. On the other hand, a maximum of 59.5 wt (%) liquid oil was obtained from PET at 500°C. The co-pyrolysis experiments were conducted by blending PET with biomass at different percentages, such as 20%, 40%, 60%, and 80%. At 60% addition of PET, a more positive synergistic effect was identified due to radical secondary reactions. In addition, the physical and chemical characterization studies conducted on pyrolysis oil showed that biomass and plastic materials could be used to make valuable chemicals.

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Section: Introductionmentioning

confidence: 99%

Co-pyrolysis Characteristics and Synergistic Interaction of Waste Polyethylene Terephthalate and Woody Biomass towards Bio-Oil Production

Anandaram

Srivastava

Vijayakumar³

et al. 2022

Journal of Chemistry

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“…One of the most convenient methods for plastic recycling is pyrolysis owing to its environmentally friendly nature. Furthermore, unlike other recycling processes such as mechanical and chemicals methods, pyrolysis is a flexible process where plastic waste could be treated alongside municipal solid waste such as e-waste, biomass, and others [26]. Interestingly, only 5% of the calorific value of the plastic waste is being used in the endothermic cracking process, which in the case of PET is 214 kJ kg −1 [27].…”

Section: Introductionmentioning

confidence: 99%

Pyrolysis kinetic modelling of abundant plastic waste (PET) and in-situ emission monitoring

et al. 2020

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Background: Recycling the ever-increasing plastic waste has become an urgent global concern. One of the most convenient methods for plastic recycling is pyrolysis, owing to its environmentally friendly nature and its intrinsic properties. Understanding the pyrolysis process and the degradation mechanism is crucial for scale-up and reactor design. Therefore, we studied kinetic modelling of the pyrolysis process for one of the most common plastics, polyethylene terephthalate (PET). The focus was to better understand and predict PET pyrolysis when transitioning to a low carbon economy and adhering to environmental and governmental legislation. This work aims at presenting for the first time, the kinetic triplet (activation energy, pre-exponential constant, and reaction rate) for PET pyrolysis using the differential iso-conversional method. This is coupled with the in-situ online tracking of the gaseous emissions using mass spectrometry. Results: The differential iso-conversional method showed activation energy (E a) values of 165-195 kJ mol −1 , R 2 = 0.99659. While the ASTM-E698 method showed 165.6 kJ mol −1 and integral methods such as Flynn-Wall and Ozawa (FWO) (166-180 kJ mol −1). The in-situ Mass Spectrometry results showed the gaseous pyrolysis emissions, which are C 1 hydrocarbons and H-O-C=O along with C 2 hydrocarbons, C 5-C 6 hydrocarbons, acetaldehyde, the fragment of O-CH=CH 2 , hydrogen, and water. Conclusions: From the obtained results herein, thermal predictions (isothermal, non-isothermal and step-based heating) were determined based on the kinetic parameters. They can be used at numerous scale with a high level of accuracy compared with the literature.

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“…At this method, waste material is heated at a high temperature and then break into new material. Pyrolysis can be carried out using catalyst (Alfernando et al, 2019;Prabasari et al, 2019;Fitriyanti, 2020) or without catalyst (Ayodeji and Oni, 2018;Alfernando, Nugraha, Prabasari, Haviz, Nazarudin, 2020). Due to a quite expensive catalyst, thermal cracking is more preferred despites its limitation in selectivity (Gaur, Mishra, Chowdhury, Baredar, Verma, 2020).…”

Section: Introductionmentioning

confidence: 99%

Thermal Pyrolysis of Used Lubricant and Cooking Oil Mixtures

Nazarudin

Amalia

Afrida

et al. 2021

jppipa, pendidikan ipa, fisika, biologi, kimia

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Pyrolysis is the one solution to recycle hydrocarbon-based waste material such as used lubricant and cooking oil. The aim of this research was to determine the effect of temperature and sample ratio on the liquid yields of a mixture of used lubricant and cooking oil. The semibatch reactor was used with a constant nitrogen flow rate of 5 mL/min. Three different ratios of sample mixture were applied in this experiment: 0.5:1, 1:1, and 1.5:1, and three different temperatures: 4000C, 4500C, and 5000C. The thermal pyrolysis of a mixture of used lubricant and cooking oil was deemed as the most effective pyrolysis to produce liquid fraction was obtained from reaction condition with the sample mixture ratio of 0.5:1 at 5000C. At this reaction condition, the liquid yields was 58.90% which consist of 64.12% were C1-C3 and 29.54% were C5-C15. Liquid fraction is predicted to increase as the temperature increase and the ratio of used lubricant to cooking oil decrease. When the ratio is increased , more gas fraction is produced.

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Thermal pyrolysis production of liquid fuel from a mixture of polyethylene terephthalate and polystyrene

Cited by 9 publications

References 13 publications

Co-pyrolysis Characteristics and Synergistic Interaction of Waste Polyethylene Terephthalate and Woody Biomass towards Bio-Oil Production

Co-pyrolysis Characteristics and Synergistic Interaction of Waste Polyethylene Terephthalate and Woody Biomass towards Bio-Oil Production

Pyrolysis kinetic modelling of abundant plastic waste (PET) and in-situ emission monitoring

Thermal Pyrolysis of Used Lubricant and Cooking Oil Mixtures

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