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Distribution of mono to octa-chlorinated PCDD/Fs in fly ash from a municipal solid-waste incinerator.
Umeå University, Faculty of Science and Technology, Chemistry.
Umeå University, Faculty of Science and Technology, Chemistry.
2008 (English)In: Environmental Science & Technology, ISSN 0013-936X, Vol. 42, no 4, 1245-50 p.Article in journal (Refereed) Published
Abstract [en]

We have estimated the concentration and distribution of the mono to octa-chlorinated congeners of polychlorinated dibenzo-p-dioxins (PCDD) and dibenzofurans (PCDF) in fly ashes at various sampling points in a large-scale municipal solid waste incinerator at Umeå, Sweden, as they cooled from 700 to 170 degrees C. Differences between the ashes were observed, the PCDD homologue profile was found to vary with temperature. The total amount of PCDD and PCDF increased as the temperature decreased in the postcombustion zone. The increase was due to both adsorption to the fly ash and formation of PCDD and PCDF. Mono-to trichlorinated PCDD predominated at high temperatures, whereas hepta- and octachlorinated PCDD predominated at temperatures below 400 degrees C. PCDF predominated over PCDD in the whole temperature range. However,the changes in homologue profile for PCDFwere minor. The isomer distribution within the homologue groups was not changed asthetemperature decreased in the postcombustion zone.

Place, publisher, year, edition, pages
2008. Vol. 42, no 4, 1245-50 p.
Identifiers
URN: urn:nbn:se:umu:diva-9647PubMedID: 18351100OAI: oai:DiVA.org:umu-9647DiVA: diva2:149318
Available from: 2008-05-07 Created: 2008-05-07 Last updated: 2011-01-10Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
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