Effects of sulfate-reducing bacteria on the corrosion behavior of carbon steel

Fei, Kuang; Wang, Jia; Li, Yan; Zhang, Dun

doi:10.1016/j.electacta.2007.03.041

Cited by 102 publications

(59 citation statements)

References 16 publications

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“…5. Figure 5 reveals that the pH values decrease sharply during the lag phase of thermophile SRB growth and increase slightly at the exponential phase, when the sulfide and organic acid generated by the metabolism of SRB augment rapidly during the lag phase of SRB and level off during the later stage, which differs from Kuang's report [3]. The pH values maintain a stable value during the stationary phase, and then rise slowly at death phase to pH 6.8.…”

Section: Growth Curves Of Thermophile Srbcontrasting

confidence: 54%

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Growth characteristics of thermophile sulfate‐reducing bacteria and its effect on carbon steel

Liu

et al. 2009

Materials & Corrosion

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Sulfate-reducing bacteria (SRB) have been identified as the main corrosive microorganisms causing unpredictable failure of materials. In this present work, a strain of thermophile SRB isolated from Bohai oilfield of China has been characterized and preliminarily identified. Furthermore, its effects on carbon steel at 60 8C in SRB culture media were studied by electrochemical methods such as potentiodynamic polarization and electrochemical impedance spectroscopy (EIS), and weight loss measurements. The results show that the bacteria belong to Desulfotomaculum. The optimum growth temperature and pH of the bacteria were 60 8C and 7.0, respectively. Weight loss measurements suggested that the corrosion rate of carbon steel in the culture media inoculated with thermophile SRB at 60 8C was 2.2 times less than that at 37 8C. At 60 8C, SRB shifted the freely corroding potential of carbon steel toward a more positive value in the first 10 days, which later change to a negative value. Results obtained from potentiodynamic polarization and EIS were in good agreement. The changes in biofilm structure with increase in bacteria supply offers some kind of protection to the base material in the early culture days at 60 8C. Subsequently, it accelerated corrosion. Energy dispersive spectrometry (EDS) and X-ray diffraction (XRD) methods indicate that corrosion products such as iron sulfides (FeS x ) in biofilm play an important role in the biocorrosion process.

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Section: Growth Curves Of Thermophile Srbcontrasting

confidence: 54%

“…The SRB grow in anaerobic niches and in biofilms to form a specialized group of microbes that utilize sulfate as the terminal electron acceptor for their respiration and generate H 2 S as the terminal product [2,3]. Biofilms are thin, distributed films formed by microorganisms such as bacteria and algae and their associated expolymers.…”

Section: Introductionmentioning

confidence: 99%

Growth characteristics of thermophile sulfate‐reducing bacteria and its effect on carbon steel

Liu

et al. 2009

Materials & Corrosion

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“…SRB use sulfate as the final electron acceptor in various anaerobic environments, such as soil, oil fields, the sea, or the innards of animals or even human beings (10,11,19,25,33). Their ability to degrade sulfate offers protection against environmental pollution.…”

Section: Adenylylsulfate Reductase (Adenosine 5-phosphosulfate [Aps] mentioning

confidence: 99%

Crystal Structure of Adenylylsulfate Reductase fromDesulfovibrio gigasSuggests a Potential Self-Regulation Mechanism Involving the C Terminus of the β-Subunit

et al. 2009

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Adenylylsulfate reductase (adenosine 5-phosphosulfate [APS] reductase [APSR]) plays a key role in catalyzing APS to sulfite in dissimilatory sulfate reduction. Here, we report the crystal structure of APSR from Desulfovibrio gigas at 3.1-Å resolution. Different from the ␣ 2 ␤ 2 -heterotetramer of the Archaeoglobus fulgidus, the overall structure of APSR from D. gigas comprises six ␣␤-heterodimers that form a hexameric structure. The flavin adenine dinucleotide is noncovalently attached to the ␣-subunit, and two gigas and A. fulgidus shows the largest differences toward the C termini of the ␤-subunits, and structural comparison reveals notable differences at the C termini, activity sites, and other regions. The disulfide comprising Cys156 to Cys162 stabilizes the C-terminal loop of the ␤-subunit and is crucial for oligomerization. Dynamic light scattering and ultracentrifugation measurements reveal multiple forms of APSR upon the addition of AMP, indicating that AMP binding dissociates the inactive hexamer into functional dimers, presumably by switching the C terminus of the ␤-subunit away from the active site. The crystal structure of APSR, together with its oligomerization properties, suggests that APSR from sulfatereducing bacteria might self-regulate its activity through the C terminus of the ␤-subunit.Sulfate-reducing bacteria (SRB) are a special group of prokaryotes that are found in sulfate-rich environments because of their ability to metabolize sulfate. SRB use sulfate as the final electron acceptor in various anaerobic environments, such as soil, oil fields, the sea, or the innards of animals or even human beings (10,11,19,25,33). Their ability to degrade sulfate offers protection against environmental pollution. SRB can remove sulfate and toxic heavy atoms from factory waste waters (12). The Desulfovibrio species is a much-studied representative of SRB, and Desulfovibrio gigas has been studied under many diverse conditions to elucidate metabolic pathways (23,35).Sulfate reduction is one of the oldest forms of cellular metabolism. The reduction can be either assimilatory or dissimilatory. Sulfate is the terminal electron acceptor in dissimilatory reduction and the raw material for the biosynthesis of cysteine in assimilatory reduction. The latter type of reduction occurs in archaebacteria, bacteria, fungi, and plants via various pathways (17). For example, in Escherichia coli, the reduction initially catalyzes sulfate to adenosine 5Ј-phosphosulfate (APS) by ATP sulfurylase. APS is then phosphorylated by APS kinase to 3Ј-phosphate APS, which is then further reduced to sulfite by 3Ј-phosphate APS reductase (APSR). Finally, sulfite is reduced by sulfite reductase to sulfide, which condenses with O-acetylserine by O-acetylserine lyase to form cysteine. For comparison, in dissimilatory sulfate reduction, sulfate is first catalyzed by ATP sulfurylase to APS, which is then directly reduced by APSR to sulfite. Sulfite is subsequently reduced by dissimilatory sulfite reductase to the following three possible pro...

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“…In marine environments, sulphate-reducing bacteria (SRB) are regarded as the main culprits that affect electrochemical corrosion behavior of metal in anaerobic condition [1][2][3][4]. As one kind of typical localized corrosion, SRB induced corrosion has been investigated extensively, and many mechanisms were proposed [5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

The influence of sulphate‐reducing bacteria on heterogeneous electrochemical corrosion behavior of Q235 carbon steel in seawater

Chen

Wang

Zhang

2015

Materials & Corrosion

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In this article, wire beam electrode (WBE) technique, electrochemical impedance spectroscopy (EIS), scanning electron microscope (SEM), and X-ray photoelectron spectroscopy (XPS) were used to investigate heterogeneous electrochemical corrosion behavior of Q235 carbon steel in seawater containing sulphatereducing bacteria (SRB). The presence of SRB in seawater results in the change of corrosion form of Q235 carbon steel from uniform corrosion to localized corrosion. Meanwhile, current distribution of Q235 carbon steel surface changes from homogeneity to heterogeneity in SRB medium, which is opposite to the trend in sterile medium. The localized corrosion process of Q235 carbon steel in SRB medium is indicated by increasing anodic area, and it centralizes in some local areas along with increasing of immersion time. In SRB medium, cathodic and anodic areas present different morphological characteristics. The corrosion products film on cathodic area is compact, whereas that in anodic area is loose. The corrosion products of Q235 carbon steel in SRB medium are mainly composed of FeS, FeO, and FeSO 4 and it is hard to find the difference in composition between cathodic and anodic areas.

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Effects of sulfate-reducing bacteria on the corrosion behavior of carbon steel

Cited by 102 publications

References 16 publications

Growth characteristics of thermophile sulfate‐reducing bacteria and its effect on carbon steel

Growth characteristics of thermophile sulfate‐reducing bacteria and its effect on carbon steel

Crystal Structure of Adenylylsulfate Reductase fromDesulfovibrio gigasSuggests a Potential Self-Regulation Mechanism Involving the C Terminus of the β-Subunit

The influence of sulphate‐reducing bacteria on heterogeneous electrochemical corrosion behavior of Q235 carbon steel in seawater

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