| 一株以原油为碳源的Pseudomonas sp.菌化学趋向性研究 |
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| 引用本文： | 景贵成,郭尚平,俞理.一株以原油为碳源的Pseudomonas sp.菌化学趋向性研究[J].中国科学院研究生院学报,2005,22(2):187-191. |
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| 作者姓名： | 景贵成 郭尚平 俞理 |
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| 作者单位： | 1. 中国科学院渗流流体力学研究所,廊坊,065007
2. 中国石油勘探开发研究院,北京,100083 |
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| 基金项目： | 中国石油股份公司重点科技攻关项目 (0 3 0 12 1 1)资助 |
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| 摘 要： | 从某油田产出水中分离得到一株以原油为碳源的Pseudomonassp .菌 (假单孢菌 ) ,其化学趋向性运动能力中等 ,趋向性机理在本文中得以详细描述 .在可视化模型实验中可看到微生物向油水界面处的有序运动 ,而在有效的营养物浓度梯度范围内 ,化学趋向性运移速度与距油水界面的距离无关 ,受温度的影响很大 .并且在微观仿真模型实验中 ,可观察到细菌在孔隙壁和油、水三相交界处聚集 ,并讨论了该现象的形成原因及其对微生物采油的有利作用 .
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| 关 键 词： | 微生物 化学趋向性 油水界面 聚集 |
| 文章编号： | 1002-1175(2005)02-0187-05 |
| 修稿时间： | 2004年6月8日 |
Studies on the Chemotaxis of a Bacterium Pseudomonas sp.Using Crude Oil as Carbon Source |
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| JING Gui-cheng,GUO Shang-ping,YU Li.Studies on the Chemotaxis of a Bacterium Pseudomonas sp.Using Crude Oil as Carbon Source[J].Journal of the Graduate School of the Chinese Academy of Sciences,2005,22(2):187-191. |
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| Authors: | JING Gui-cheng GUO Shang-ping YU Li |
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| Institution: | JING Gui-Cheng GUO Shang-PingYU Li\+1 |
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| Abstract: | A bacterium Pseudomonas sp. using the crude oil as the carbon source was sep ar ated from the production water in an oilfield.Its chemotaxis migration abilit y was really medium, and its chemotaxis mechanism was particularly described in this paper. In visualized experiments, the ordered motion of microorganism to th e oil-water interface could be watched, and within the scope of the effective n u triment concentration grads,the chemotaxis motion velocity was not related with the dis tance from the interface at all and it was much influenced by the temperature. M eanw hile, in experiments using emulational micro-models, it could be observed that b acteria had become enriched at the orifice wall, oil and water three-phrase bou ndary, and the forming reason and the beneficial effect on MEOR were also discus sed. |
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| Keywords: | microorganism chemotaxis oil-water interface enrichment |
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