Methanogenic transformation of aromatic hydrocarbons and phenols in groundwater aquifers.
Methanogenic transformation of aromatic hydrocarbons and phenols in groundwater aquifers.
复制标题
地下水含水层中芳香烃和酚类的产甲烷转化。
DOI：
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发表时间：
1990
期刊：
影响因子：
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通讯作者：
D. Grbìc
中科院分区：
文献类型：
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作者：
D. Grbìc
摘要发酵菌和产甲烷菌作为微生物植物群的重要成员，在地下缺氧带和受污染的地下水含水层中被反复发现。这些细菌与专性质子还原剂一起形成复杂的产甲烷群落，在外源电子受体耗尽的条件下作为有机物的分解者是重要的。它们的代谢活动已在来自含水层物质的实验室微观世界中以及在地下原位中得到证实。产甲烷群落已被证明可以转化许多有机污染物，甚至可以完全降解这些化合物，产生二氧化碳和甲烷。根据污染物的化学结构，这种化合物可以用作发酵微生物的电子供体和碳/能源（通常是高度还原的化合物）;或者，高度氧化的污染物可以用作发酵微生物的碳/能源。
Abstract Fermentative and methanogenic bacteria have been found repeatedly as important members of microbial flora in anoxic zones of the subsurface—in pristine as well as in contaminated groundwater aquifers. These bacteria, which together with obligate proton reducers form complex methanogenic communities, are significant as decomposers of organic matter under conditions of exogenous electron acceptor depletion. Their metabolic activity has been demonstrated in laboratory microcosms derived from aquifer material, and also in the subsurface in situ. Methanogenic communities have been shown to transform numerous organic pollutants, or even to completely degrade these compounds with the production of carbon dioxide and methane. Depending on the chemical structure of the pollutant, such a compound can be used as an electron donor and a carbon/energy source for fermentative microorganisms (which is typically the case with highly reduced compounds); alternatively, a highly oxidized pollutant can be used as a ...