Abstract
The degradation of hexachlorobenzene (HCB) is of great concern and attracts considerable scientific and regulatory interests, due to the high toxicity, great bioaccumulation, and persistence of HCB in the environment. However, in the real HCB-contaminated soil, the effect of coexisting chlorobenzene congeners on the degradation capacity of HCB is poorly known. In this work, the anaerobic degradation behaviors of three coexisting chlorobenzene congeners pentachlorobenzene (PeCB), 1,2,4,5-tetrachlorobenzene (1,2,4,5-TeCB), and 1,2,4-trichlorobenzene (1,2,4-TCB) and the influence of initial pH and reaction temperature on the dechlorination of HCB in HCB-contaminated soil from the dye plant were studied. The amount and extent of accumulated coexisting chlorobenzenes was analyzed under different environmental conditions. The results indicate that the concentrations of three coexisting chlorobenzene congeners change in the form of wave. The anaerobic degradation activity of HCB is reduced due to the feedback inhibition caused by accumulation of coexisting chlorobenzene congeners, and the feedback inhibition varies from environmental conditions.
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Jiang, L., Wang, Q., Liu, H. et al. Influence of Degradation Behavior of Coexisting Chlorobenzene Congeners Pentachlorobenzene, 1,2,4,5-Tetrachlorobenzene, and 1,2,4-Trichlorobenzene on the Anaerobic Reductive Dechlorination of Hexachlorobenzene in Dye Plant Contaminated Soil. Water Air Soil Pollut 226, 299 (2015). https://doi.org/10.1007/s11270-015-2559-3
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DOI: https://doi.org/10.1007/s11270-015-2559-3