title: Formation of brominated pollutants during the pyrolysis and combustion of tetrabromobisphenol A at different temperatures.
abstract: Tetrabromobisphenol A (TBBPA) is the most widely used brominated flame retardant worldwide. A detailed examination of the degradation products emitted during thermal decomposition of TBBPA is presented in the study. Runs were performed in a laboratory furnace at different temperatures (650 and 800 °C) and in different atmospheres (nitrogen and air). More than one hundred semivolatile compounds have been identified by GC/MS, with special interest in brominated ones. Presence of HBr and brominated light hydrocarbons increased with temperature and in the presence of oxygen. Maximum formation of PAHs is observed at pyrolytic condition at the higher temperature. High levels of 2,4-, 2,6- and 2,4,6- bromophenols were found. The levels of polybrominated dibenzo-p-dioxins and furans have been detected in the ppm range. The most abundant isomers are 2,4,6,8-TeBDF in pyrolysis and 1,2,3,7,8-PeBDF in combustion. These results should be considered in the assessment of thermal treatment of materials containing brominated flame retardants.
authors.affiliation: Department of Chemical Engineering, University of Alicante, P.O. Box 99, E 03080 Alicante, Spain.
authors.forename: Nuria
authors.initials: N
authors.lastname: Ortuño
authors.affiliation: Department of Chemical Engineering, University of Alicante, P.O. Box 99, E 03080 Alicante, Spain.
authors.forename: Julia
authors.initials: J
authors.lastname: Moltó
authors.affiliation: Department of Chemical Engineering, University of Alicante, P.O. Box 99, E 03080 Alicante, Spain. Electronic address: ja.conesa@ua.es.
authors.forename: Juan A
authors.initials: JA
authors.lastname: Conesa
authors.affiliation: Department of Chemical Engineering, University of Alicante, P.O. Box 99, E 03080 Alicante, Spain.
authors.forename: Rafael
authors.initials: R
authors.lastname: Font
mesh_terms: D004147:Dioxins / Q000737:chemistry; D005411:Flame Retardants; D005663:Furans / Q000737:chemistry; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods; D054879:Halogenation; D006358:Hot Temperature; D006842:Hydrocarbons, Brominated / Q000737:chemistry*; D010636:Phenols / Q000737:chemistry*; D011075:Polybrominated Biphenyls / Q000737:chemistry*; D011084:Polycyclic Aromatic Hydrocarbons / Q000737:chemistry
chemical_list: D004147:Dioxins; D005411:Flame Retardants; D005663:Furans; D006842:Hydrocarbons, Brominated; D010636:Phenols; D011075:Polybrominated Biphenyls; D011084:Polycyclic Aromatic Hydrocarbons; C038964:2,6-dibromophenol; C020806:tetrabromobisphenol A
keywords: Brominated flame retardant; Combustion; Dioxin; Pyrolysis; TBBPA