| Abstract
| - The aim of this study was to investigate how the levelsand homologue profiles of organic micropollutants (OMPs)were effected by the so-called secondary formationbetween 650 and 200 °C. The combustion experimentswere performed in a laboratory scale reactor fed with anartificial municipal solid waste fuel. The predominanceof higher chlorinated OMP homologues after the secondaryreaction shows that further chlorination reactions ofOMPs formed at higher temperature reactions (>650 °C)are more important in the lower temperature range thanformation through the elements C, H, O, and Cl (de novosynthesis). Most of the dibenzofuran (DF), dibenzo-p-dioxin(DD), and the biphenyl (BP) are formed at temperatureshigher than 650 °C. Simultaneously flue gas sampling wastaken in the convector section of the reactor at 650 and200 °C, respectively. The samples were analyzed for mono-to octachlorinated dibenzo-p-dioxins and dibenzofurans,tetra- to decachlorinated biphenyls, di- to hexachlorinatedbenzenes, and di- to pentachlorinated phenols. In additionto chlorinated OMPs, nonchlorinated DD, DF, and BP wereanalyzed.
|
