Effects of Heating Rate and Temperature on the Thermal Pyrolysis of Expanded Polystyrene Post-Industrial Waste

Effects of Heating Rate and Temperature on the Thermal Pyrolysis of Expanded Polystyrene Post-Industrial Waste

The use of plastic as material in various applications has been essential in the evolution of the technology industry and human society since 1950. Therefore, their production and waste generation are high due to population growth. Pyrolysis is an effective recycling method for treating plastic wast...

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Bibliographic Details
Published in:Polymers Vol. 14; no. 22; p. 4957
Main Authors: Gonzalez-Aguilar, Arantxa M, Cabrera-Madera, Victoria P, Vera-Rozo, James R, Riesco-Ávila, José M
Format: Journal Article
Language:English
Published: Switzerland MDPI AG 16-11-2022
MDPI
Subjects:
Chemical compounds
Ethylbenzene
Evolutionary biology
expanded polystyrene waste
Heating rate
Human evolution
Hydrocarbons
Industrial wastes
Nitrogen
Plastics
Polymers
Polystyrene resins
Population growth
Pyrolysis
Recycling
Statistical analysis
Styrenes
temperature
thermal pyrolysis
Thermogravimetric analysis
Toluene
Mexico
United States > US
temperature
thermal pyrolysis
expanded polystyrene waste
heating rate
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Summary:The use of plastic as material in various applications has been essential in the evolution of the technology industry and human society since 1950. Therefore, their production and waste generation are high due to population growth. Pyrolysis is an effective recycling method for treating plastic waste because it can recover valuable products for the chemical and petrochemical industry. This work addresses the thermal pyrolysis of expanded polystyrene (EPS) post-industrial waste in a semi-batch reactor. The influence of reaction temperature (350-500 °C) and heating rate (4-40 °C min ) on the liquid conversion yields and physicochemical properties was studied based on a multilevel factorial statistical analysis. In addition, the analysis of the obtaining of mono-aromatics such as styrene, toluene, benzene, ethylbenzene, and α-methyl styrene was performed. Hydrocarbon liquid yields of 76.5-93% were achieved at reaction temperatures between 350 and 450 °C, respectively. Styrene yields reached up to 72% at 450 °C and a heating rate of 25 °C min . Finally, the potential application of the products obtained is discussed by proposing the minimization of EPS waste via pyrolysis.
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ISSN:2073-4360
2073-4360
DOI:10.3390/polym14224957