| 1. |
- Öberg, Tomas, 1956-, et al.
(författare)
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Brominated aromatics from combustion
- 1987
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Ingår i: Chemosphere. - : Elsevier BV. - 0045-6535 .- 1879-1298. ; 16:10-12, s. 2451-2465
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Tidskriftsartikel (refereegranskat)abstract
- The production of brominated aromatics from combustion was shown to be influenced by the operating conditions. Brominated aromatics also showed high yields compared to their chlorinated analogues.
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| 2. |
- Öberg, Tomas, 1956-, et al.
(författare)
-
Chlorinated aromatics from metallurgical industries : Process factors influencing production and emissions
- 1989
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Ingår i: Chemosphere. - Oxford : Pergamon Press. - 0045-6535 .- 1879-1298. ; 19:1-6, s. 711-716
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Tidskriftsartikel (refereegranskat)abstract
- The emission and production of chlorinated aromatics from metallurgical industries, e g scrap-metal re-melting, show substantial variations due to a number of process factors. The data evaluated indicates clearly that the production of chlorinated aromatics is combustion controlled.
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| 3. |
- Öberg, Tomas, 1956-, et al.
(författare)
-
Chlorinated aromatics from the combustion of hazardous waste
- 1985
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Ingår i: Chemosphere. - : Elsevier BV. - 0045-6535 .- 1879-1298. ; 14:2, s. 215-221
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Tidskriftsartikel (refereegranskat)abstract
- The production and emission of chlorinated aromatics from a hazardous waste incinerator were shown to be influenced by the operating conditions. The emissions of chlorinated benzenes, PCDD and PCDF show statistically significant correlations to the chlorine input. Different substance groups also correlate, and the results presented correspond well with a general formation mechanism of chlorophenols via chlorobenzenes as indicated by others.
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| 4. |
- Öberg, Tomas, 1956-, et al.
(författare)
-
Combustion test data from a Swedish hazardous waste incinerator
- 1986
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Ingår i: Chemosphere. - Oxford : Pergamon Press. - 0045-6535 .- 1879-1298. ; 15:9-12, s. 2045-2048
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Tidskriftsartikel (refereegranskat)abstract
- Here we present results from our tests with PCB-incineration at the SAKAB hazardous waste incinerator in Norrtorp, Sweden. Combustion tests were made with PCB both as a fluid (Arochlor 1242) and as a contaminant of solid waste (Arochlor 1016 in capacitors). A general conclusion was that the incineration of considerable amounts of PCB did not effect the production of PCDD and PCDF in this combustion plant.
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| 5. |
- Öberg, Tomas, 1956-, et al.
(författare)
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Dioxins from Scandinavian waste combustion plants
- 1986
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Ingår i: Chemosphere. - : Elsevier BV. - 0045-6535 .- 1879-1298. ; 15:9-12, s. 2041-2044
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Tidskriftsartikel (refereegranskat)abstract
- A large quantity of emission data for PCDD and PCDF have been reported to date. Less information is available concerning the controlling parameters for the production of chlorinated aromatics from waste combustion. Here we report results and conclusions from investigations carried out in the Scandinavian countries to date.
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| 6. |
- Öberg, Tomas, 1956-, et al.
(författare)
-
Emission and chlorination pattern of PCDD/PCDF predicted from indicator parameters
- 1987
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Ingår i: Chemosphere. - Oxford : Pergamon Press. - 0045-6535 .- 1879-1298. ; 16:6, s. 1221-1230
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Tidskriftsartikel (refereegranskat)abstract
- The emission and chlorination pattern of polychlorinated dioxins and dibenzofurans from waste combustion shows a close covariation with that of chlorinated benzenes and phenols. This covariation can be utilized to predict the emission levels of specific isomers as well as the pattern of congeners.
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| 7. |
- Öberg, Tomas, 1956-, et al.
(författare)
-
Hexachlorobenzene as an indicator of dioxin production from combustion
- 1985
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Ingår i: Chemosphere. - : Elsevier BV. - 0045-6535 .- 1879-1298. ; 14:8, s. 1081-1086
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Tidskriftsartikel (refereegranskat)abstract
- The production of polychlorinated dioxins and dibenzofurans shows a strong correlation with the production of hexachlorobenzene. Hexachlorobenzene can be used as an indicator for the production of chlorinated aromatics.
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| 8. |
- Öberg, Tomas, 1956-, et al.
(författare)
-
Indicator Parameters for PCDD/PCDF
- 1989
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Ingår i: Chemosphere. - Oxford : Pergamon Press. - 0045-6535 .- 1879-1298. ; 19:1-6, s. 337-344
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Tidskriftsartikel (refereegranskat)abstract
- Relations between different chlorinated aromatics have been evaluated in 66 samples from various industrial activities. For municipal waste combustion partial least squares modelling with latent variables (PLS) can explain 86 % of the variance in PCDD/PCDF from the isomerspecific analytical data for chlorinated benzenes and phenols.
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| 9. |
- Öberg, Tomas, 1956-, et al.
(författare)
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Production of chlorinated aromatics in the post-combustion zone and boiler
- 1989
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Ingår i: Chemosphere. - Oxford : Pergamon Press. - 0045-6535 .- 1879-1298. ; 19:1-6, s. 317-322
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Tidskriftsartikel (refereegranskat)abstract
- The production of halogenated aromatics has been investigated in the SAKAB hazardous waste incinerator, Norrtorp, Sweden. The measurement results show that there is a substantial net production of chlorinated aromatics in the boiler.
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| 10. |
- Öberg, Tomas, 1956-, et al.
(författare)
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Catalytic effects by metal oxides on the formation and degradation of chlorinated aromatic compounds in fly ash.
- 2008
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Ingår i: Chemosphere. - Oxford : Pergamnon Press. - 0045-6535 .- 1879-1298. ; 71:6, s. 1135-43
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Tidskriftsartikel (refereegranskat)abstract
- Polychlorinated benzenes, dibenzo-p-dioxins (PCDD), and dibenzofurans (PCDF) may be formed below the combustion temperature in fly ash from municipal solid waste incinerators (MSWI). Copper catalyzes this formation, possibly by the Deacon reaction. Many other elements are also Deacon catalysts or promoters, and here we report results from a statistically designed experiment with 15 metal oxides added to fly ash and heated at 300 degrees C for 2h in an air atmosphere. A resolution IV fractional factorial design with four replicates was completed in 36 runs with the oxides of magnesium, yttrium, titanium, vanadium, niobium, chromium, molybdenum, tungsten, manganese, iron, cobalt, nickel, copper, zinc, and tin. All samples were analyzed for chlorinated benzenes and the results were evaluated by analysis of variance. The addition of copper significantly increased the amounts of the chlorinated benzenes, while cobalt, chromium and vanadium decreased the net formation. The oxides of zinc and iron seemed to have a slightly positive and negative effect respectively. The findings in this study seem to corroborate our previously reported results regarding the different catalytic effects of copper and chromium, and lack of a significant effect by nickel. Besides chromium, it also identifies cobalt and vanadium as potent catalysts for oxidative degradation of the chlorinated aromatic compounds found in MSWI fly ash.
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