Effects of biogenic H2S on the microbiologically influenced corrosion of C1018 carbon steel by sulfate reducing Desulfovibrio vulgaris biofilm

Jia, Ru; Tan, Jie; Jin, Peng; Blackwood, Daniel John; Xu, Dake; Gu, Tingyue

doi:10.1016/j.corsci.2017.10.023

Cited by 262 publications

(83 citation statements)

References 40 publications

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“…It has also been hypothesized that electrically conductive FeS can bind protons to its surface and that this facilitates electron transfer between the iron's surface and the SRB cells, although the actual mechanism of this last step is unclear [78]. However, the nature of the iron sulphide films is very dependent on the conditions under which it forms, with mackinawite, pyrrhotite, pyrite and non-stoichiometric forms all being reported to form on steel substrates exposed to SRB [79]. In some cases, when these sulphide films are well adhered and insulating, they are actually act as a physical barrier against further corrosion [80,81].…”

Section: Attack By Sulphidementioning

confidence: 99%

An Electrochemist Perspective of Microbiologically Influenced Corrosion

Blackwood

2018

CMD

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Microbiologically influenced corrosion (MIC) is a major concern in a wide range of industries, with claims that it contributes 20% of the total annual corrosion cost. The focus of this present work is to review critically the most recent proposals for MIC mechanisms, with particular emphasis on whether or not these make sense in terms of their electrochemistry. It is determined that, despite the long history of investigating MIC, we are still a long way from really understanding its fundamental mechanisms, especially in relation to non-sulphate reducing bacterial (SRB) anaerobes. Nevertheless, we do know that both the cathodic polarization theory and direct electron transfer from the metal into the cell are incorrect. Electrically conducting pili also do not appear to play a role in direct electron transfer, although these could still play a role in aiding the mass transport of redox mediators. However, it is not clear if the microorganisms are just altering the local chemistry or if they are participating directly in the electrochemical corrosion process, albeit via the generation of redox mediators. The review finishes with suggestions on what needs to be done to further our understanding of MIC.

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Section: Attack By Sulphidementioning

confidence: 99%

An Electrochemist Perspective of Microbiologically Influenced Corrosion

Blackwood

2018

CMD

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“…XPS analysis of the exposed Ti-6Al-4V specimens with corrosion products on the surface showed significant peaks for sulfur (S 2− and S 6+ ), aluminum (Al 3+ ), and a small amount of titanium (Ti 4+ ). According to Figure 8, sulfates in SRB solution were reduced to sulfides under SRB metabolism as shown by the following reaction [31,32]:…”

Section: Surface Analysismentioning

confidence: 99%

Corrosion Behavior of the Ti–6Al–4V Alloy in Sulfate-Reducing Bacteria Solution

et al. 2019

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The corrosion behavior of the Ti-6Al-4V alloy was investigated in a sulfate-reducing bacteria (SRB) solution. The results showed that sulfate-reducing bacteria has good affinity with the surface of the Ti-6Al-4V alloy after 5 days. A potentiodynamic polarization test demonstrated that the corrosion resistance of the Ti-6Al-4V alloy was initially improved but deteriorated quickly in the subsequent period. The corrosion mechanism of the Ti-6Al-4V alloy was revealed by analyzing its microstructure with the aid of scanning electron microscopy, X-ray photoelectron spectroscopy and X-ray fluorescence. The pitting corrosion was deemed to be a typical cause of the corrosion behavior of the alloy in the SRB solution. The underlying mechanism of the pitting corrosion was proposed for the alloy.

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“…were found to be significantly overrepresented and may therefore be regarded as characteristic members of the biofilm microbiota. All of them are known for biofilm formation and can be found in contaminated watery environments (Teixeira and Oliveira 2002;Benedek et al 2016;Auguet et al 2017;Jia et al 2018). While Pseudomonas was the most abundant genus in all sites, specific Pseudomonas OTUs appeared to be distinctive for influent (linear discriminant analysis score, LDA 5.3) and biofilm samples (LDA 4.3 and 2.5).…”

Section: Growth Experiments Without Treatmentmentioning

confidence: 99%

Microbiota in a cooling-lubrication circuit and an option for controlling triethanolamine biodegradation

2018

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Cooling and lubrication agents like triethanolamine (TEA) are essential for many purposes in industry. Due to biodegradation, they need continuous replacement, and byproducts of degradation may be toxic. This study investigates an industrial (1,200 m³) cooling-lubrication circuit (CLC) that has been in operation for 20 years and is supposedly in an ecological equilibrium, thus offering a unique habitat. Next-generation (Illumina Miseq 16S rRNA amplicon) sequencing was used to profile the CLC-based microbiota and relate it to TEA and bicine dynamics at the sampling sites, influent, machine rooms, biofilms and effluent. Pseudomonas pseudoalcaligenes dominated the effluent and influent sites, while Alcaligenes faecalis dominated biofilms, and both species were identified as the major TEA degrading bacteria. It was shown that a 15 min heat treatment at 50°C was able to slow down the growth of both species, a promising option to control TEA degradation at large scale.

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Effects of biogenic H2S on the microbiologically influenced corrosion of C1018 carbon steel by sulfate reducing Desulfovibrio vulgaris biofilm

Cited by 262 publications

References 40 publications

An Electrochemist Perspective of Microbiologically Influenced Corrosion

An Electrochemist Perspective of Microbiologically Influenced Corrosion

Corrosion Behavior of the Ti–6Al–4V Alloy in Sulfate-Reducing Bacteria Solution

Microbiota in a cooling-lubrication circuit and an option for controlling triethanolamine biodegradation

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