Degradation of BTEX by anaerobic bacteria: physiology and application |
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Authors: | Sander A B Weelink Miriam H A van Eekert Alfons J M Stams |
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Institution: | (1) Laboratory of Microbiology, Wageningen University, Dreijenplein 10, 6703 HB Wageningen, The Netherlands;(2) Lettinga Associates Foundation, Bomenweg 2, P.O Box 500, 6700 AM Wageningen, The Netherlands;(3) Present address: Tauw bv, Handelskade 11, P.O. Box 133, 7400 AC, Deventer, The Netherlands; |
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Abstract: | Pollution of the environment with aromatic hydrocarbons, such as benzene, toluene, ethylbenzene and xylene (so-called BTEX)
is often observed. The cleanup of these toxic compounds has gained much attention in the last decades. In situ bioremediation
of aromatic hydrocarbons contaminated soils and groundwater by naturally occurring microorganisms or microorganisms that are
introduced is possible. Anaerobic bioremediation is an attractive technology as these compounds are often present in the anoxic
zones of the environment. The bottleneck in the application of anaerobic techniques is the lack of knowledge about the anaerobic
biodegradation of benzene and the bacteria involved in anaerobic benzene degradation. Here, we review the existing knowledge
on the degradation of benzene and other aromatic hydrocarbons by anaerobic bacteria, in particular the physiology and application,
including results on the (per)chlorate stimulated degradation of these compounds, which is an interesting new alternative
option for bioremediation. |
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