Anaerobic degradation of benzene, toluene, ethylbenzene, and o-xylene in sediment-free iron-reducing enrichment cultures.
Monoaromatic hydrocarbons such as benzene, toluene, ethylbenzene, and xylene (BTEX) are widespread contaminants in groundwater. We examined the anaerobic degradation of BTEX compounds with amorphous ferric oxide as electron acceptor. Successful enrichment cultures were obtained for all BTEX substrates both in the presence and absence of AQDS (9,10-anthraquinone-2,6-disulfonic acid). The electron balances showed a complete anaerobic oxidation of the aromatic compounds to CO2. This is the first report on the anaerobic degradation of o-xylene and ethylbenzene in sediment-free iron-reducing enrichment cultures.
Jahn
Michael K
MK
Lehrstuhl Umweltmineralogie, Zentrum für Angewandte Geowissenschaften, Eberhard-Karls-Universität Tübingen, Germany.
Haderlein
Stefan B
SB
Meckenstock
Rainer U
RU
D000693:Anaerobiosis; D001421:Bacteria, Anaerobic / Q000254:growth & development* / Q000378:metabolism*; D001554:Benzene / Q000378:metabolism; D001555:Benzene Derivatives / Q000378:metabolism; D001673:Biodegradation, Environmental; D003470:Culture Media; D006841:Hydrocarbons, Aromatic / Q000378:metabolism*; D007501:Iron / Q000378:metabolism*; D010084:Oxidation-Reduction; D014050:Toluene / Q000378:metabolism; D014874:Water Pollutants, Chemical / Q000378:metabolism*; D014992:Xylenes / Q000378:metabolism
D001555:Benzene Derivatives; D003470:Culture Media; D006841:Hydrocarbons, Aromatic; D014874:Water Pollutants, Chemical; D014992:Xylenes; D014050:Toluene; D007501:Iron; D001554:Benzene; C004912:ethylbenzene; C026114:2-xylene