Enhanced energy recovery from polyethylene terephthalate via pyrolysis in CO₂ atmosphere while suppressing acidic chemical species

Jechan LEE, Taewoo LEE, Yiu Fai TSANG, Jeong-Ik OH, Eilhann E. KWON

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4 Citations (Scopus)

Abstract

Herein, CO₂ is employed as a pyrolysis medium for thermal treatment (i.e., pyrolysis) of polyethylene terephthalate (PET) waste in an environmentally benign way. The CO₂-assited pyrolysis provides a novel way to not only enhance energy recovery from the PET waste but also reduce acidic byproducts such as benzoic acid. The generation of carbon monoxide (CO) for pyrolysis of the PET waste in CO₂ is ∼5 times more than that in N₂. In addition to the enhancement of CO generation, the compositions of benzene derivatives, PAHs, and acidic compounds are lower in pyrolytic products in CO₂ than that in N₂. This study suggests that the employment of CO₂ in pyrolysis of PET waste would be a more environmentally friendly waste treatment process with enhancing energy recovery. Copyright © 2017 Elsevier Ltd. All rights reserved.
Original languageEnglish
Pages (from-to)456-460
JournalEnergy Conversion and Management
Volume148
Early online dateJun 2017
DOIs
Publication statusPublished - Sep 2017

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Carbon monoxide
Polyethylene terephthalates
Pyrolysis
Recovery
Waste treatment
Benzoic acid
Polycyclic aromatic hydrocarbons
Byproducts
Benzene
Heat treatment
Derivatives
Chemical analysis

Citation

Lee, J., Lee, T., Tsang, Y. F., Oh, J.-I., & Kwon, E. E. (2017). Enhanced energy recovery from polyethylene terephthalate via pyrolysis in CO₂ atmosphere while suppressing acidic chemical species. Energy Conversion and Management, 148, 456-460.

Keywords

  • Plastic
  • Polyethylene terephthalate (PET)
  • Thermochemical process
  • Waste disposal