Madsen T, Rasmussen H B, Nilsson L
VKI Water Quality Institute, Hørsholm, Denmark.
Chemosphere. 1995 Nov;31(10):4243-58. doi: 10.1016/0045-6535(95)00300-w.
An anaerobic gas production test was used for determining the potential biodegradation of 22 organic chemicals under methanogenic conditions. Nine of the examined chemicals were extensively mineralized (> 75%) both in sewage sludge and in a freshwater swamp indicating good agreement between biodegradation potentials in these habitats. Samples from a marine sediment showed a less extensive mineralization of most of the test chemicals, and lag periods of several weeks often preceded net gas production. As marine sediments usually contain sulfate at the time of collection, the assessment of biodegradation potentials in such environments is probably more reliable when using a method based on sulfate reduction instead of methanogenic gas production. The results of the tests indicate that the commonly recommended washing of sludge solids can be eliminated by applying a more diluted inoculum.
采用厌氧产气试验来测定22种有机化学品在产甲烷条件下的潜在生物降解性。在所检测的化学品中，有9种在污水污泥和淡水沼泽中均被广泛矿化（>75%），这表明这些生境中的生物降解潜力具有良好的一致性。来自海洋沉积物的样品显示，大多数测试化学品的矿化程度较低，并且在净产气之前通常有几周的滞后期。由于海洋沉积物在采集时通常含有硫酸盐，因此在这种环境中使用基于硫酸盐还原而非产甲烷产气的方法来评估生物降解潜力可能更可靠。试验结果表明，通过使用稀释度更高的接种物，可以省去通常建议的污泥固体洗涤步骤。
