Formation behavior of PCDD/FS in PVC pyrolysis with copper oxide

Etsuro Shibata, Satoru Yamamoto, Eiki Kasai, Takashi Nakamura

Research output: Contribution to journalArticlepeer-review

27 Citations (Scopus)

Abstract

Formation and decomposition behaviors of PCDD/Fs during pyrolysis of polyvinyl chloride (PVC) with CuO have been investigated. These reactions proceed simultaneously, and the rate of decomposition exceeds that of formation with further retention. More 2,3,7,8-TCDD is formed when the dechlorination of PCDD/Fs proceeds significantly. Homologue profile patterns of PCDD/Fs show that the fractions of O8CDD and H6CDFs are relatively larger within PCDDs and PCDFs, respectively. Extremely large amounts of PCDD/Fs are obtained with the long retention time at 200 °C. The formation of PCDD/Fs deceases drastically with increase in the molar ratio of CuO/PVC. The acceptability of thermodynamic calculations on the formation of PCDD/Fs is also investigated. The thermodynamic calculated tendency of the effect of oxygen on the formation of PCDD/Fs agrees well with the experimental results, although absolute values of the amount of PCDD/Fs are much different.

Original languageEnglish
Pages (from-to)1235-1242
Number of pages8
JournalChemosphere
Volume50
Issue number9
DOIs
Publication statusPublished - 2003 Mar 1

Keywords

  • CuO
  • Formation
  • PCDD/Fs
  • PVC
  • Pyrolysis
  • Thermodynamic calculation

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Chemistry
  • Chemistry(all)
  • Pollution
  • Health, Toxicology and Mutagenesis

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