Anaerobic microbial dehalogenation and its key players in the contaminated Bitterfeld‐Wolfen megasite
Anaerobic microbial dehalogenation and its key players in the contaminated Bitterfeld‐Wolfen megasite
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DOI：
10.1093/femsec/fiy012
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发表时间：
2018-04
影响因子：
4.2
通讯作者：
I. Nijenhuis;R. Stollberg;U. Lechner
中科院分区：
文献类型：
--
作者：
I. Nijenhuis;R. Stollberg;U. Lechner
摘要上个世纪，由于事故和当地化学工业的废物倾倒，巨型矿Bitterfeld沃尔芬受到高度污染。在地下水和（河流）沉积物中仍然可以发现各种污染物，包括氯化乙烯和苯、六氯己烷和氯化二恶英。有机卤化物的原位微生物转化的调查仅在过去的二十年中在这一巨型矿进行。本文综述了Bitterfeld沃尔芬现场厌氧脱卤菌活性的研究进展，重点介绍了氯代乙烯、一氯苯和氯代二恶英。应用了各种方法和概念，包括非原位培养和分离，以及水化学参数的原位分析，污染物的化合物特异性稳定同位素分析，13C示踪研究和分子标记。总体而言，有机卤化物的生物转化正在现场进行，Dehalococcoides mccartyi物种在Bitterfeld沃尔芬地区的解毒过程中发挥着重要作用。图.没有可用的标题。
Abstract The megasite Bitterfeld‐Wolfen is highly contaminated as a result of accidents and because of dumping of wastes from local chemical industries in the last century. A variety of contaminants including chlorinated ethenes and benzenes, hexachlorohexanes and chlorinated dioxins can still be found in the groundwater and (river) sediments. Investigations of the in situ microbial transformation of organohalides have been performed only over the last two decades at this megasite. In this review, we summarise the research on the activity of anaerobic dehalogenating bacteria at the field site in Bitterfeld‐Wolfen, focusing on chlorinated ethenes, monochlorobenzene and chlorinated dioxins. Various methods and concepts were applied including ex situ cultivation and isolation, and in situ analysis of hydrochemical parameters, compound‐specific stable isotope analysis of contaminants, 13C‐tracer studies and molecular markers. Overall, biotransformation of organohalides is ongoing at the field site and Dehalococcoides mccartyi species play an important role in the detoxification process in the Bitterfeld‐Wolfen region. Figure. No Caption available.