| OCR Text |
Show 12 Table 2 Di- and tri~alogenated phenols from MSW-incineration, ng/m standard dry gas at 10% CO2 . Analyzed by HRGC-ECD Plant A B C:1 C:2 (peration Start Norna 1 Nonnal Nornal Disturbed Fuel MSW l'-lSW MSW MSv/ W:xx1 Waste 2,4-Dichlorophenol 15000 140 1300 440 2,4-Dihramophenol 2600 58 12 16 2,4,6-Trichlorophenol 55000 6600 3300 1800 2, 4, 6-Tribramophenol 340 na 4 5 These brominated phenols are found at lower levels than those substituted with chlorine in the same positions. However, the relative concentrations of brominated compared with chlorinated phenols indicate either unexpectable high levels of bromine in MSW, or a higher yield from the same amount of halogen (assuming binomial distribution between possible isomers). Literature data concerning the amount of bromine present in MSW seems to be scarce. We have therefore recently measured both HCl and HBr in the flue gas from two MSW incinerators, with the purpose of establishing a basis for comparison. The average concentration of bromine in these measurements varied between 3 and 5 % (w/w) relative to chlorine. In table 3 we present measurement data for diand trihalogenated phenols from peat combustion. |
