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03548 ELECTROCHEMICAL KINETICS OF SULFATE REDUCING BACTERIA ISOLATED FROM A GAS PIPELINE

Picture for 03548 ELECTROCHEMICAL KINETICS OF SULFATE
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Product Number: 51300-03548-SG
ISBN: 03548 2003 CP
Author: J. L. Mora-Mendoza, A. A. Padilla-Viveros, G. Zavala-Olivares, M. A. Gonzalez- Núñez, J. L. Moreno-S
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A strain of sulfate reducing bacteria (SRB) was isolated from the inner deposits of a pipeline that transports sour gas in the Marine Region of Mexico. The sample was collected from the 36” Atasta - NohochA pipeline. The strain was identified by 16S rRNA sequential analysis as Desulfovibrio sp. The physiological kinetics in Posgate Cmedia showed sulfate consumption and 30 mM sulfide production up to 250 h. The corrosion rate was evaluated with API XL 52 probes by weight loss and three electrochemical techniques: Rp, EIS and electrochemical noise. When Desulfovibrio sp. was inoculated in the Posgate C media, a reduction in the corrosion rate vs. time was measured by Rp and EIS. This behavior was attributed to the formation of a FeS film and biofilm, which form an effective diffusion barrier. On the other hand, the electrochemical noise measurements indicated that a localized corrosion process took place on the surface sample, which was confirmed by SEM analysis.
A strain of sulfate reducing bacteria (SRB) was isolated from the inner deposits of a pipeline that transports sour gas in the Marine Region of Mexico. The sample was collected from the 36” Atasta - NohochA pipeline. The strain was identified by 16S rRNA sequential analysis as Desulfovibrio sp. The physiological kinetics in Posgate Cmedia showed sulfate consumption and 30 mM sulfide production up to 250 h. The corrosion rate was evaluated with API XL 52 probes by weight loss and three electrochemical techniques: Rp, EIS and electrochemical noise. When Desulfovibrio sp. was inoculated in the Posgate C media, a reduction in the corrosion rate vs. time was measured by Rp and EIS. This behavior was attributed to the formation of a FeS film and biofilm, which form an effective diffusion barrier. On the other hand, the electrochemical noise measurements indicated that a localized corrosion process took place on the surface sample, which was confirmed by SEM analysis.
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Picture for 03545 COMPARISON OF ELECTROCHEMICAL TECHNIQUES
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03545 COMPARISON OF ELECTROCHEMICAL TECHNIQUES DURING THE CORROSION 0F X52 PIPELINE STEEL IN THE PRESENCE OF SULPHATE REDUCING BACTERIA (SRB)

Product Number: 51300-03545-SG
ISBN: 03545 2003 CP
Author: Ricardo Galvan-Martinez, Graciela Garcia-Caloca, Ruben Duran-Romero, Juan Mendoza-Flores, Ernesto M.
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Picture for 03549 CORROSION BEHAVIOR OF CARBON STEEL
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03549 CORROSION BEHAVIOR OF CARBON STEEL INFLUENCED BY SULFATE-REDUCING BACTERIA IN SOIL ENVIRONMENTS

Product Number: 51300-03549-SG
ISBN: 03549 2003 CP
Author: SeonYeob Li, YoungGeun Kim, YoungTai Kho, Tak Kang
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Picture for 03544 MICROSCOPIC DIFFERENTIATION OF INTERNAL
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03544 MICROSCOPIC DIFFERENTIATION OF INTERNAL CORROSION INITIATION MECHANISMS IN NATURAL GAS PIPELINE SYSTEMS

Product Number: 51300-03544-SG
ISBN: 03544 2003 CP
Author: Richard B. Eckert, Henry C. Aldrich, Chris A. Edwards, Bruce A. Cookingham
Publication Date: 2003
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An analytical approach that can discriminate between various forms of microscopic corrosion initiation has been employed in natural gas gathering and storage facilities.  Information provided by the analysis of electron microscope coupons has led toward the better understanding and diagnosis of the initial stages of internal corrosion in natural gas gathering and storage facilities.
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