Details zur Publikation

Kategorie Textpublikation
Referenztyp Zeitschriften
DOI 10.1016/S0045-6535(00)00132-6
Titel (primär) Peroxidative degradation of selected PCB: a mechanistic study
Autor Köller, G.; Möder, M.; Czihal, B.
Journal / Serie Chemosphere
Erscheinungsjahr 2000
Department ANA; EXPOEPID
Band/Volume 41
Heft 12
Seite von 1827
Seite bis 1834
Sprache englisch
Keywords White rot fugus; Trametes multicolor; HRP; Horseradish peroxidase
Abstract The enzyme-induced decomposition and biodegradation of PCB were investigated. 2,5-Dichlorobiphenyl (PCB 9) and 2,2',5,5'-tetrachlorobiphenyl (PCB 52) were used as example compounds to study efficiency and mechanism of the degradation processes. It was found that the application of horseradish peroxidase (HRP) together with defined amounts of hydrogen peroxide removed 90% of the initial concentration of PCB 9 and 55% of the initial concentration of PCB 52 from an aqueous solution after a reaction period of 220 min. Dechlorination was observed as the initial step. Although the metabolites identified were mainly chlorinated hydroxybiphenyls, benzoic acids and non-substituted 1,1'-biphenyl, some higher chlorinated biphenyl isomers also appeared. The biodegradation of PCB 9 using the white rot fungus Trametes multicolor took about four weeks and reduction was about 80% of the initial concentration. The metabolites produced (dichlorobenzenes, chlorophenols and alkylated benzenes) were not quite the same as those observed upon incubation with HRP.
dauerhafte UFZ-Verlinkung
Köller, G., Möder, M., Czihal, B. (2000):
Peroxidative degradation of selected PCB: a mechanistic study
Chemosphere 41 (12), 1827 - 1834