Chloroaromatics in groundwater: chances of bioremediation |
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| Authors: | Jürgen Dermietzel Andrea Vieth |
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| Institution: | UFZ Centre for Environmental Research Leipzig-Halle GmbH, Department of Hydrogeology, Theodor-Lieser-Str. 04, 06120 Halle (Saale), Germany,
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| Abstract: | . The potential for biodegrading of mono-, di- and trichlorobenzenes in a contaminated aquifer in Bitterfeld (Saxony-Anhalt) was tested both in the laboratory and using on-site column experiments. Under the prevailing anaerobic conditions, the reductive dechlorination of 1,4-dichlorobenzene (1,4-DCB) takes place very slowly. Under aerobic conditions the indigenous micro-organisms are able to mineralize monochlorobenzene (MCB) and 1,4-DCB. The degradation rates for the other two isomeric dichlorobenzenes and for 1,2,4-trichlorobenzene (1,2,4-TCB) under aerobic conditions are significantly lower. Indications were found that once the oxygen has been consumed, Fe(III) species can be used as alternative electron acceptors. |
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