Details zur Publikation

Referenztyp Zeitschriften
DOI / URL Link
Titel (primär) Assessment of in situ biodegradation of monochlorobenzene in contaminated groundwater treated in a constructed wetland
Autor Braeckevelt, M.; Rokadia, H.; Imfeld, G.; Stelzer, N.; Paschke, H.; Kuschk, P.; Kästner, M.; Richnow, H.H.; Weber, S.;
Journal / Serie Environmental Pollution
Erscheinungsjahr 2007
Department ISOBIO; UBT; GWS;
Band/Volume 148
Heft 2
Sprache englisch;
Keywords constructed wetland; monochlorobenzene; biodegradation; in situ microcosms; isotopic fractionation
Abstract The degradation of monochlorobenzene (MCB) was assessed in a constructed wetland treating MCB contaminated groundwater using a detailed geochemical characterisation, stable isotope composition analysis and in situ microcosm experiments. A correlation between ferrous iron mobilisation, decreasing MCB concentration and enrichment in carbon isotope composition was visible at increasing distance from the inflow point, indicating biodegradation of MCB in the wetland. Additionally, in situ microcosm systems loaded with 13C-labelled MCB were deployed for the first time in sediments to investigate the biotransformation of MCB. Incorporation of 13C-labelled carbon derived from the MCB into bacterial fatty acids substantiated in situ degradation of MCB. The detection of 13C-labelled benzene indicated reductive dehalogenation of MCB. This integrated approach indicated the natural attenuation of the MCB in a wetland system. Further investigations are required to document and optimise the in situ biodegradation of MCB in constructed and natural wetland systems treating contaminated groundwater. An integrated approach including isotope composition analysis and in situ microcosm experiments provided evidences for in situ biodegradation of MCB in a wetland system.
ID 1677
dauerhafte UFZ-Verlinkung https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=1677
Braeckevelt, M., Rokadia, H., Imfeld, G., Stelzer, N., Paschke, H., Kuschk, P., Kästner, M., Richnow, H.H., Weber, S. (2007):
Assessment of in situ biodegradation of monochlorobenzene in contaminated groundwater treated in a constructed wetland
Environ. Pollut. 148 (2), 428 - 437