Brominated aromatics from combustion

Mechanism of chlorination of aromatic compounds adsorbed on the surface of fly ash from municipal incinerators

“…It is noteworthy that the amount of aromatic bromination of naphthalene is directly related to the amount of bromide contained in the fly ash {13). This observation corroborates data which showed that increasing bromide content in the fuel of an incinerator resulted in increasing amounts of brominated organic products adsorbed to the emitted fly ash (8).…”

“…Stieglitz (7) found that the amount of PCDDs on fly ash surfaces increased 10-20-fold if the fly ash was heated in air at 300 °C for 2 h before extraction and analysis. Oberg (8) recently disclosed that both chlorinated and brominated aromatic compounds were present on the surface of fly ash from an incinerator. When bromide was added to the fuel, the ratio of brominated products to chlorinated products increased proportionately.…”

Pyrolysis compounds in the soot from the self-destruction of an electrical autotransformer

“…Thermoplastic resins are used in electrical equipment, generally, with addition of flame retardants such as bromine compounds as chemical protection against any probable fire ( 7). Other researchers have already confirmed the presence of these phenols obtained from the combustion of various bromo waste compounds (8). The presence of polyamide was also confirmed by the cyanoarene series having molecular weights at m/z 153,167, and 203 since the polycaprolactam has a nitrogen content of 12.3%.…”

Identification and Quantification of Monobromopolychlorobiphenyls in Baltic Ringed Seal and a Technical PCB (Clophen A50)

“…The total concentration was estimated at 0.5% (w/w). Furthermore, a wide spectrum of mixed bromo/chloro derivatives, such as benzenes, biphenyls, dibenzofurans, and dibenzo-p-dioxins, are formed during municipal solid waste (MSW) and chemical waste incineration (14)(15)(16)(17)(18). Mainly monobromopolychloro derivatives of these compounds are formed during these processes probably because of a high Cl/Br ratio in the waste.…”