Details zur Publikation

Kategorie Textpublikation
Referenztyp Zeitschriften
DOI 10.2166/wst.2007.520
Titel (primär) Biodegradation of chlorobenzene in a constructed wetland treating contaminated groundwater
Autor Braeckevelt, M.; Rokadia, H.; Mirschel, G.; Weber, S.; Imfeld, G.; Stelzer, N.; Kuschk, P.; Kästner, M.; Richnow, H.H.
Quelle Water Science and Technology
Erscheinungsjahr 2007
Department ISOBIO; UBT
Band/Volume 56
Heft 3
Seite von 57
Seite bis 62
Sprache englisch
Keywords Biodegradation; carbon isotope fractionation; constructed wetland; monochlorobenzene; oxygen
Abstract Monochlorobenzene (MCB) is an important groundwater contaminant world-wide. In this study, a horizontal subsurface flow constructed wetland with an integrated water compartment was fed with MCB contaminated groundwater originating from the local aquifer. Analysis of spatial concentration dynamics of MCB and oxygen was combined with isotope composition analysis of MCB for assessing in situ biodegradation. Removal of MCB was most effective in the upper layer of the soil filter, reaching up to 77.1%. Trace oxygen concentrations below 0.16 mg L-1 were observed throughout the wetland transect, suggesting a considerable limitation of aerobic microbial MCB degradation. Enrichment of 13C in the residual MCB fraction at increasing distance from the inflow point indicated microbial MCB degradation in the wetland. The observed isotope shift was higher than expected for aerobic MCB degradation and thus pointed out a significant contribution of an anaerobic degradation pathway to the overall biodegradation.
dauerhafte UFZ-Verlinkung https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=1678
Braeckevelt, M., Rokadia, H., Mirschel, G., Weber, S., Imfeld, G., Stelzer, N., Kuschk, P., Kästner, M., Richnow, H.H. (2007):
Biodegradation of chlorobenzene in a constructed wetland treating contaminated groundwater
Water Sci. Technol. 56 (3), 57 - 62 10.2166/wst.2007.520