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Effects of oxygen on formation of PCB and PCDD/F on extracted fly ash in the presence of carbon and cupric salt
Umeå University, Faculty of Science and Technology, Chemistry.
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2001 (English)In: Chemosphere, Vol. 43, no 4-7, 777-82 p.Article in journal (Refereed) Published
Abstract [en]

The effect of oxygen–nitrogen atmosphere (N2+10%O2,N2+1%O2 and 99.999% N2) on the formation of PCB, PCDD and PCDF by the de novo synthetic reactions in the system consisting of extracted fly ash (from municipal waste incinerators – MWI), activated carbon, CuCl2 · 2H2O and NaCl at 340°C was studied. The content of PCDD/F for systems with 10% O2,1%O2 and 99.999% N2 was decreasing and corresponded to 17304, 5544, and 1437 ng/sample. In all studied systems the isomer OCDD/F was prevailing. The content of PCBs in the same system was also decreasing from 1214 to 166 ng/g. Formation of nonortho PCB was relatively high compared to the system where only nitrogen was present. The possible mechanism of formation is outlined.

Place, publisher, year, edition, pages
2001. Vol. 43, no 4-7, 777-82 p.
Keyword [en]
Fly ash; de novo synthesis; PCB; PCDD; PCDF; Activated carbon; Cu(II)Cl2; NaCl
URN: urn:nbn:se:umu:diva-9601DOI: doi:10.1016/S0045-6535(00)00433-1OAI: diva2:149272
Available from: 2008-04-29 Created: 2008-04-29 Last updated: 2011-01-13Bibliographically approved

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