Expanded polystyrene and multilayer plastic waste conversion into liquid fuel by the pyrolysis process

<abstract> <p>The world is today faced with the problem of plastic waste pollution more than ever before. Global plastic production continues to accelerate, despite the fact that recycling rates are comparatively low, with only about 15% of the 400 million tonnes of plastic currently produced annually being recycled. Although recycling rates have been steadily growing over the last 30 years, the rate of global plastic production far outweighs this, meaning that more and more plastic is ending up in dump sites, landfills and finally into the environment, where it damages the ecosystem. Better end-of-life options for plastic waste are needed to help support current recycling efforts and turn the tide on plastic waste. A promising emerging technology is plastic pyrolysis; a chemical process that breaks plastics down into their raw materials. Key products are liquid resembling crude oil, which can be burned as fuel and other feedstock which can be used for so many new chemical processes, enabling a closed-loop process. The experimental results on the pyrolysis of thermoplastic polymers are discussed in this review with emphasis on single and mixed waste plastics pyrolysis liquid fuel.</p> </abstract>

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Combustibles alternativos para motores de combustión interna obtenidos a partir de residuos plásticos

Revista de Energía Química y Física ◽

10.35429/jcpe.2019.20.6.22.29 ◽

2019 ◽

pp. 22-29

Author(s):

José Manuel Riesco-Ávila ◽

David Alejandro Rodríguez-Valderrama ◽

Diana Marcela Pardo-Cely ◽

Francisco Elizalde- Blancas

Keyword(s):

High Density Polyethylene ◽

Plastic Waste ◽

Low Density Polyethylene ◽

Distillation Process ◽

Pyrolysis Process ◽

Mechanical Recycling ◽

Heavy Hydrocarbons ◽

Plastic Materials ◽

Rapid Pyrolysis

Of the different methods for recycling plastic, pyrolysis offers the possibility to overcome the limitations of mechanical recycling, which requires large amounts of clean, separate and homogeneous plastic waste to ensure the quality of the final product. Pyrolysis is the chemical decomposition of plastic materials by thermal degradation in the absence of oxygen. The plastic waste is introduced into a chamber, where it is subjected to high temperatures, and the gases generated are condensed in order to obtain a distillate hydrocarbon. This paper presents the results obtained from the pyrolysis of plastic waste mixtures of polypropylene, high density polyethylene, and low density polyethylene. In a first stage, the plastic waste is subjected to a rapid pyrolysis process at temperatures of 440-450 °C, obtaining a mixture of heavy hydrocarbons. Subsequently, these hydrocarbons are subjected to a distillation process, first at a temperature of 180 °C, where a hydrocarbon with properties similar to those of gasoline is obtained, and then at a temperature of 360 °C, yielding a hydrocarbon with properties similar to those of diesel.

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Processing Plastic Waste HDPE and PP on Pyrolysis Temperature Using Cu-Al2O3 Catalyst Into an Alternative Liquid Fuel

Proceedings of the 4th Forum in Research, Science, and Technology (FIRST-T1-T2-2020) ◽

10.2991/ahe.k.210205.002 ◽

2021 ◽

Author(s):

Pamilia Coniwanti ◽

Fitri Hadiah ◽

David Bahrin ◽

Liza Novriani ◽

Gracia Mei Lie Justina ◽

...

Keyword(s):

Liquid Fuel ◽

Pyrolysis Temperature ◽

Plastic Waste ◽

Al2o3 Catalyst

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The Effect of Cracking Temperature from a Mixture of HDPE and LDPE type Plastic Waste using Zeolite Catalyst on the Quality of Liquid Fuel Products

Journal of Physics Conference Series ◽

10.1088/1742-6596/1500/1/012088 ◽

2020 ◽

Vol 1500 ◽

pp. 012088

Author(s):

Pamilia Coniwanti ◽

Indira Nur Sakinah ◽

Fitri Hadiah ◽

Farra Unzillah Kendari Putri ◽

Roosdiana Muin ◽

...

Keyword(s):

Liquid Fuel ◽

Zeolite Catalyst ◽

Plastic Waste

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Plastic Waste Pyrolysis Optimization to Produce Fuel Grade Using Factorial Design

E3S Web of Conferences ◽

10.1051/e3sconf/201912513005 ◽

2019 ◽

Vol 125 ◽

pp. 13005

Author(s):

Renanto Pandu Wirawan ◽

Farizal

Keyword(s):

Factorial Design ◽

Plastic Waste ◽

Pyrolysis Process ◽

Polymer Molecules ◽

Waste Production ◽

Plastic Type ◽

The World ◽

Liquid Products ◽

The Government ◽

Fuel Pyrolysis

Indonesia is one of the biggest plastic waste production in the world. The government targets to reach 20% for recycling plastic waste in 2019. One alternative to manage plastic waste is using pyrolysis to produce fuel. Pyrolysis is used to degrade the plastic long chain of polymer molecules into smaller molecules. All type of plastic except polyvinyl chloride (PVC) were used in this study to produce fuel. For the purpose, experiment factorial design was used for the optimisation plastic type, residence time, and temperature to maximise the yield of liquid products of the pyrolysis process. In this study 2k factorial design was used for each factor. The result shows that the pyrolysis process used is able to produce diesel like fuel in low temperature.

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