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Formation of polychlorinated dibenzo-p-dioxins/dibenzofurans in the carbon/fly ash system

Authors
Journal
Chemosphere
0045-6535
Publisher
Elsevier
Publication Date
Volume
23
Identifiers
DOI: 10.1016/0045-6535(91)90145-4

Abstract

Abstract The effect of the reaction time and temperature on PCDD/F formation on a fly ash surface was studied. Carbon was used as a source for de novo synthesis. There is a great rise in PCDD/F formation between 2 and 4 hours annealing time. This is probably due to changes in the fly ash surface. The optimum temperature for formation was found to be around 350 °C, which is higher than the 300 °C found in other publications. Whereas the congener distribution changes as function of both reaction time and temperature, the isomer distribution shows little reaction time or temperature dependence.

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