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首页> 外文会议>Air Waste Management Association's Annual conference Exhibition >STUDY OF OIL-DEGRADING BACTERIA IN EMULSION PHENOMENON
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STUDY OF OIL-DEGRADING BACTERIA IN EMULSION PHENOMENON

机译：乳液现象中的油脂降解细菌研究

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摘要

Biosurfactants have potential for use in enhancement of in suit bioremediation and biorestoration by increasing the bioavailability of contaminants. Microorganisms isolated from oil-contaminated soil were examined for their abilities to degrade and emulsify hydrocarbons, then found the relationship between the degree of emulsification ( determined by E_(24) value ) and hydrocarbons degradation. In the batch experiment of the bacteria growth, the emulsion phenomenon began from the logarithmic phase and reached on stable at the stationary phase. Moreover, there was relationship between the ability of utilizing the oil by the bacteria and the emulsion phenomenon: the higher the E_(24) value was, the larger quantity oil was degraded. In the slurry experiment with pure bacteria, no matter either single bacteria incubation or mixed bacteria incubation was used, addition of bacteria was helpful to the oil degradation in the natural oil and the sterilized soil. Owing to the competition between the added bacteria and the native microorganisms in the original soil, the degrading effects were not apparent in the natural soil. Besides, the oil degrading effect caused by the single bacteria incubation or the mixed bacteria incubation was not absolute, it should depend on the nutrient conditions of the soil and the allocation of microorganisms in the soil.
机译：通过增加污染物的生物利用度，生物表面活性剂具有用于增强诉讼性生物修复和生物剧性的可能性。从油污染的土壤中分离的微生物检查它们的能力降解和乳化的烃，然后发现乳化程度（由E_确定（24）值）和烃降解之间的关系。在细菌生长的批量实验中，乳液现象从对数相开始，并在固定阶段达到稳定。此外，利用细菌和乳液现象的能力之间存在关系：E_（24）值越高，较大的油状油降解。在用纯细菌的浆液实验中，无论使用单一细菌孵育还是混合细菌孵育，都会有助于天然油和灭菌土壤中的油降解。由于额外的细菌与原始土壤中的天然微生物之间的竞争，天然土壤中的降解效果并不明显。此外，由单细菌孵育或混合细菌孵育引起的油降解效果不是绝对的，这应该取决于土壤的营养状况和土壤中微生物的分配。

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