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Photolytic cebromination of decabromo diphenyl ether (DeBDE)
Umeå University, Faculty of Science and Technology, Department of Chemistry.
Umeå University, Faculty of Science and Technology, Department of Chemistry.
(English)Manuscript (preprint) (Other academic)
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:umu:diva-2208OAI: oai:DiVA.org:umu-2208DiVA, id: diva2:140099
Available from: 2003-09-23 Created: 2003-09-23 Last updated: 2018-06-09Bibliographically approved
In thesis
1. On the combustion and photolytic degradation products of some brominated flame retardants
Open this publication in new window or tab >>On the combustion and photolytic degradation products of some brominated flame retardants
2003 (English)Doctoral thesis, comprehensive summary (Other academic)
Alternative title[sv]
Produkter från förbrännings- och fotokemisk nedbrytning av vissa bromerade flamskyddsmedel
Abstract [en]

Many modern products, especially electronic goods, are protected by brominated flame retardants (BFR). Some of the most common flame retardants are polybrominated diphenylethers (PBDE), tetrabromobisphenol-A (TBBP-A) and hexabromocyclododecane (HBCD). These compounds have been found in environmental samples and shown to have physiological effects on experimental animals. This thesis considers end-of-life aspects of brominated flame retardants. When spread in the environment, these compounds may be degraded into other forms. For example, if sludge contaminated with PBDE is used as an agricultural fertilizer, the PBDE could be degraded by sunlight to species of PBDE with lower degree of bromination and, to some extent, also form polybrominated dibenzofurans (PBDF). In addition, PBDF and polybrominated dibenzo-p-dioxins (PBDD) are formed during combustion of brominated flame retardants. When waste products with brominated flame retardants are co-combusted with household waste or other chlorinated fuel, polybrominated- chlorinated dibenzo-p-dioxins (PBCDD) and polybrominated- chlorinated dibenzofurans (PBCDF)will be formed. The bromin/chlorine composition of dioxins and furans is dependent on the bromine/chlorine ratio in the fuel, but the types of brominated flame retardants that are being combusted is less important. In the studies reported here, bromine levels higher than "normal" for household waste has been used. The results show that there is a pronounced increase in total dioxin levels in fluegas when when bromine is present, implying that waste containing brominated flame retardants should only be incinerated at combustion plants with effecient air pollution control devices.

Place, publisher, year, edition, pages
Umeå: Umeå universitet, 2003. p. 54
Keywords
Environmental chemistry, PBCDD, PBCDF, PBDD, PBDF, PBDE, HBCD, TBBP-A, combustion, photolytic, MSW, Miljökemi
National Category
Environmental Sciences
Identifiers
urn:nbn:se:umu:diva-107 (URN)91-7305-516-6 (ISBN)
Public defence
2003-10-10, N320, Naturvetarhuset, Umeå, 13:00
Opponent
Supervisors
Available from: 2003-09-23 Created: 2003-09-23 Last updated: 2018-03-15Bibliographically approved

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Tysklind, Mats

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Citation style
  • apa
  • ieee
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More styles
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  • en-US
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  • nn-NO
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  • asciidoc
  • rtf