抄録
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.
| 本文言語 | English |
|---|---|
| ページ（範囲） | 1235-1242 |
| ページ数 | 8 |
| ジャーナル | Chemosphere |
| 巻 | 50 |
| 号 | 9 |
| DOI | |
| 出版ステータス | Published - 2003 3月 |
ASJC Scopus subject areas
- 環境工学
- 環境化学
- 化学 (全般)
- 汚染
- 健康、毒物学および変異誘発