Intrinsic bioremediation of petroleum hydrocarbons in a gas condensate-contaminated aquifer
Intrinsic bioremediation of petroleum hydrocarbons in a gas condensate-contaminated aquifer
复制标题
受凝析油污染的含水层中石油烃的本质生物修复
DOI：
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发表时间：
1999
期刊：
影响因子：
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通讯作者：
J. M. Suflita
中科院分区：
文献类型：
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作者：
L. Gieg;R. Kolhatkar;M. McInerney;R. Tanner;S. H. Harris;K. Sublette;J. M. Suflita
设计了一项研究，以确定天然气生产场地下的浅层含水层中凝析油气的固有生物修复是否代表一个重要的命运过程。超过4年，在地下水，沉积物和渗流区化学在含水层的污染部分的变化进行了解释相对于背景区。变化包括溶解氧和硫酸盐水平下降，碱度增加，铁（II），甲烷浓度在受污染的地下水，这表明好氧异养呼吸耗尽氧气储备离开厌氧条件下的烃影响的地下。受污染地下水中的溶解氢水平表明，硫酸盐还原和甲烷化是主要的生物过程，证实了地球化学的发现。此外，在污染的沉积物中，硫酸盐还原菌和产甲烷菌的数量是背景的10 - 1000倍。假定的代谢物...
A study was designed to determine if the intrinsic bioremediation of gas condensate hydrocarbons represented an important fate process in a shallow aquifer underlying a natural gas production site. For over 4 yr, changes in the groundwater, sediment, and vadose zone chemistry in the contaminated portion of the aquifer were interpreted relative to a background zone. Changes included decreased dissolved oxygen and sulfate levels and increased alkalinity, Fe(II), and methane concentrations in the contaminated groundwater, suggesting that aerobic heterotrophic respiration depleted oxygen reserves leaving anaerobic conditions in the hydrocarbon-impacted subsurface. Dissolved hydrogen levels in the contaminated groundwater indicated that sulfate reduction and methanogenesis were predominant biological processes, corroborating the geochemical findings. Furthermore, 10−1000-fold higher numbers of sulfate reducers and methanogens were enumerated in the contaminated sediment relative to background. Putative metabol...