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本实验选择了 5个油田 (包括江汉、吉林、长庆、胜利和宝浪 )采油厂污水中硫酸盐还原菌作为种源 ,在培养基中采用静态挂片测其平均腐蚀速度 ,细菌新陈代谢产物及腐蚀产物的分析借助于气相色谱 /质谱联用技术 (GC/MS)及X衍射 (XRD)。结果表明 ,细菌腐蚀行为的差异与细菌本身的活性有关 ,细菌的种群不同 ,新陈代谢产生的有机酸不同 ,其中活性高的硫酸盐还原菌代谢产物以丙酸为主 ,细菌腐蚀也最严重 ,其余的以丁酸为主 ;有机酸种类不同是导致腐蚀行为存在差异的关键。
In this experiment, sulfate-reducing bacteria in the effluent of 5 oilfields (including Jianghan, Jilin, Changqing, Shengli and Baolang) were selected as provenances, and the average corrosion rate was measured by static coupons in the medium. The bacterial metabolites And analysis of corrosion products by means of gas chromatography / mass spectrometry (GC / MS) and X-ray diffraction (XRD). The results showed that the difference of bacterial corrosion behavior was related to the activity of bacteria itself. The bacterial population varied and the organic acids produced by metabolism were different. Among them, the active metabolites of sulfate-reducing bacteria were mainly propionic acid with the most serious bacterial erosions. Of the main butyric acid; different types of organic acids lead to differences in corrosion behavior is the key.