Corrosion of Mild Steel in Cultures of Ferric Iron Reducing Bacterium Isolated from Crude Oil I. Polarization Characteristics
Corrosion of Mild Steel in Cultures of Ferric Iron Reducing Bacterium Isolated from Crude Oil I. Polarization Characteristics
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DOI：
10.5006/1.3585992
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发表时间：
1981-08
期刊：
影响因子：
1.6
通讯作者：
C. Obuekwe;D. Westlake;J. A. Plambeck;F. D. Cook
中科院分区：
文献类型：
--
作者：
C. Obuekwe;D. Westlake;J. A. Plambeck;F. D. Cook
摘要在微氧条件下，研究了低碳钢在合成介质和油田采出水四种介质中的极化特性。在所有的培养基中，当三价铁还原菌（假单胞菌）在场在采出水中，低碳钢的阳极和阴极去极化都可能发生，尽管是短暂的。添加乳酸钠作为底物，以提高总的可用能量在采出水引起的阳极去极化持续，而阴极去极化没有被废除。阳极去极化伴随着细菌还原铁亚铁化合物。在不存在三价铁还原菌的情况下，阳极和阴极都被极化。提出了细菌引起阳极去极化的机理。
Abstract The polarization characteristics of mild steel were studied under microaerobic conditions in four media, including a synthetic medium and the produced water from an oil field. In all the media, anodic depolarization was always observed when a ferric iron reducing bacterium (Pseudomonas sp.) was present. In produced water, both anodic and cathodic depolarization of the mild steel could occur, although transiently. Addition of sodium lactate as a substrate to boost the total available energy in the produced water caused the anodic depolarization to be sustained while cathodic depolarization was not abolished. Anodic depolarization was accompanied by the bacterial reduction of ferric to ferrous compounds. In the absence of the ferric iron reducing bacterium, both the anode and the cathode were polarized. A mechanism for the bacteria induced anodic depolarization is suggested.