Department of Environmental Science and Engineering, Ewha Womans University, Seoul 120-750, Korea.
J Microbiol Biotechnol. 2012 Oct;22(10):1452-6. doi: 10.4014/jmb.1112.12033.
The anaerobic oxidation of methane (AOM) in anaerobic sewage sludge was characterized. The net methane oxidation was observed in samples amended with methane plus sulfate or with methane alone, whereas methane formation was observed in the samples without methane, indicating that methane oxidation and formation occurred simultaneously. The ratio of the net methane oxidation rate to H2S formation was 100:1, suggesting that the AOM was not closely associated with sulfate reduction in the anaerobic sludge. The net AOM was positively associated with the methane concentration and sludge dilution ratio. However, the rate of AOM was negatively correlated with organic substrate (acetate) concentration. Therefore, the production and oxidation of methane could be controlled by environmental conditions and dissolved organic compounds in the bulk solution.
研究了厌氧污水污泥中的甲烷厌氧氧化（AOM）。在添加甲烷加硫酸盐或仅添加甲烷的样品中观察到净甲烷氧化，而在没有甲烷的样品中观察到甲烷形成，表明甲烷氧化和形成同时发生。净甲烷氧化速率与 H2S 形成的比值为 100:1，表明 AOM 与厌氧污泥中的硫酸盐还原没有密切关联。净 AOM 与甲烷浓度和污泥稀释比呈正相关。然而，AOM 的速率与有机底物（乙酸盐）浓度呈负相关。因此，甲烷的产生和氧化可以通过环境条件和主体溶液中的溶解有机化合物来控制。
