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The behavior of PCDD and PCDF during thermal treatment of waste incineration ash
Umeå University, Faculty of Science and Technology, Department of Chemistry.
Umeå University, Faculty of Science and Technology, Department of Chemistry. (U. S. Environmental Protection Agency)
Umeå University, Faculty of Science and Technology, Department of Chemistry.
2011 (English)In: Chemosphere, ISSN 0045-6535, E-ISSN 1879-1298, Vol. 84, no 3, 305-310 p.Article in journal (Refereed) Published
Abstract [en]

The polychlorinated dibenzo-p-dioxin (PCDD) and polychlorinated dibenzofuran (PCDF) content of three fly ash samples with different elemental compositions from different municipal waste incinerators were analyzed before and after thermal treatment at 300°C or 500°C. Gas phase emissions during the treatments were also collected and analyzed. Substantial reductions in the total PCCD/F content of the ashes were observed after treatment at 500°C, seemingly due to degradation rather than dechlorination. Treatment at 300°C resulted in an increase in the PCDD/F content of the three ashes. Initial concentration of PCDD/F in the untreated ashes did not reflect the outcome of the treatment at the different temperatures. In addition, the composition of the ash was found to influence the rate of decomposition and formation of PCDD and PCDF during thermal treatment; the results showed that Cu, Fe, Ca and S play important roles in these processes.

Place, publisher, year, edition, pages
Elsevier , 2011. Vol. 84, no 3, 305-310 p.
Keyword [en]
PCDD/F, ash, degradation, thermal treatment, ash composition
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:umu:diva-44408DOI: 10.1016/j.chemosphere.2011.04.014PubMedID: 21546056OAI: oai:DiVA.org:umu-44408DiVA: diva2:421367
Available from: 2011-06-08 Created: 2011-06-08 Last updated: 2017-12-11Bibliographically approved

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