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Influence of aerobic bacteria on corrosion inhibition of oil bushing steel in the oilfield stratum water. |
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Abstract The influences of aerobic bacteria on corrosion behaviors of oil bushing steel J55 in the stratum water were investigated by Tafel plots, linear polarization curves and the electrochemical impedance spectroscopy (EIS). The microstructure and composition of the corrosion scale formed on the J55 steel were analyzed by scanning electron microscopy (SEM) and X-ray diffraction (XRD). The scale composition changed, the scale compactness enhanced and the adherence between the substrate and the corrosion scale increased with the addition of the aerobic bacteria. The experimental results of electrochemical corrosion rate indicated that the bacteria could significantly decrease the corrosion rate of the J55steel by 60% in the oilfield stratum water. The mechanism of corrosion inhibition of oil bushing steel J55 by aerobic bacteria in the oilfield stratum water was discussed.
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Received: 05 August 2008
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JIA Li-Tao, CHEN Hong-Bo, LI Xiao-Ming, YANG Qi, XU De-Chao, ZHAO Jian-Wei, XIANG Sha, LIU Fang-Fang, LI Juan-Juan. Effect of Zn2+ on biological phosphorus removal performance in single-stage oxic sequencing batch reactor[J]. CHINA ENVIRONMENTAL SCIENCECE, 2014, 34(9): 2266-2272. |
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