Biocorrosion of AISI 304 Stainless Steel by <i>Desulfovibrio desulfuricans</i> in Seawater

Nguyen, Thi My Phuc; Sheng, Xiaoxia; Ting, Yen‐Peng; Pehkonen, Simo O.

doi:10.1021/ie071468e

Cited by 34 publications

(23 citation statements)

References 25 publications

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“…It is evident that the polarization resistance of carbon steel was reduced in the presence of SRB, independent of the exposure time. This result confirms that the metabolic products of the SRB and extracellular polymeric substances (EPS) caused a change in the electrochemical properties of the systems [26]. All of the curves in the diagrams present only one capacitive loop.…”

Section: Eis Analysissupporting

confidence: 72%

Carbon steel corrosion induced by sulphate-reducing bacteria in artificial seawater: electrochemical and morphological characterizations

et al. 2016

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In this work, the corrosion behavior of carbon steel AISI 1020 was evaluated in artificial seawater in the presence of mixed sulfate-reducing bacteria (SRB) culture isolated from the rust of a pipeline. The corrosion evaluation was performed by electrochemical techniques (open circuit potential (E ocp ), polarization curves and electrochemical impedance spectroscopy (EIS)), while the formation of a biofilm and corrosion products were observed by scanning electron microscopy (SEM) and X-ray energy dispersive spectroscopy (EDS). The presence of SRB in the medium shifted the open circuit potential to more positive values and increased the corrosion rate of the steel. Electrochemical and morphological techniques confirmed the presence of a biofilm on the steel surface. EDS spectra data showed the presence of sulfur in the corrosion products. After removing the biofilm, localized corrosion was observed on the surface, confirming that localized corrosion had occurred. The biogenic sulfide may lead to the formation of galvanic cells and contributes to cathodic depolarization.

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Section: Eis Analysissupporting

confidence: 72%

Carbon steel corrosion induced by sulphate-reducing bacteria in artificial seawater: electrochemical and morphological characterizations

et al. 2016

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“…A detailed decomposition of the O 1 s peak is unreliable if the sample contains a high proportion of phospholipids and monoglycerides or diglycerides (see below). It should be noted that Na KL 1 L 23 Auger peak appears near 535.6 eV and that the K 2p doublet appears at 292.8–295.8 eV; these should not be confused with components of O 1 s and C 1 s peaks, respectively …”

Section: From Elements To Chemical Functionsmentioning

confidence: 97%

“…The attribution of the component at 533.1 eV mainly to C– O H, C– O –C– O –C, or C– O –C of ester was demonstrated by its relationship with the C 286.3 component. It is surprising that this is sometimes attributed to water in the literature despite the high vacuum of the spectrometer . Owing to the width and shape of the O 1 s peak, the decomposition in three components, followed by the study of correlations between spectral data, was preferred to the decomposition in four components, or to the decomposition in three components with direct attribution to metal oxide, O = C and O –C, respectively (case of Cu–Ni alloy), or to metal oxide, metal hydroxide and O = C (case of stainless steel), respectively.…”

Section: Exploitation Of Correlations Between Xps Data: Chemistry Outmentioning

confidence: 99%

XPS analysis of bio‐organic systems

Rouxhet

Genet

2011

Surface & Interface Analysis

255

173

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A survey of the literature is made for the XPS analysis of food products (mainly spray-dried powders, which reveal a considerable surface enrichment in lipids) and of microorganisms and related systems (extracellular polymer substances and biofilms). This survey is used as a background for discussions and recommendations regarding methodology. Sample preparation methods reviewed are freeze drying, analysis of frozen hydrated specimens and adsorption of surface-active biocompounds on model substrates. Peak decomposition is a way to increase the wealth of information provided by the XPS spectra. It should be performed after a check that sample charge stabilization is satisfactory. Moreover, ensuring the precision needed to make comparisons within sets of samples may involve a trade-off between imposing constraints and generating information. The examination of correlations between spectral data in the light of chemical guidelines is useful to validate or improve peak decomposition and component assignment, and may also upgrade the chemical information regarding speciation. Further upgrading may be achieved by expressing marker XPS data in terms of concentrations of compounds of interest. Different methods of computation are discussed, providing a composition in terms of ingredients, classes of biochemical compounds, or various organic and inorganic compounds. As an alternative or complement to this deterministic approach, multivariate analysis of suitable spectral windows provides spectral components, which may be used for comparing samples, and which may have a direct chemical relevance or be used to identify features of interest.

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“…For the Ni 2p spectra (Figure (b)), big differences are also observed. The S‐blank sample displays only one small peak at 852.8 eV, which can be indexed to metallic Ni (Ni 0 ) . However, the Ni 0 peak disappears in the S‐12 sample, but another peak with a satellite is observed.…”

Section: Figurementioning

confidence: 99%

In Situ Growth of Fe(Ni)OOH Catalyst on Stainless Steel for Water Oxidation

et al. 2017

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Stainless steel contains the elements Fe, Ni, Cr and Mn, which are known as active centers of oxygen evolution reaction (OER) catalysts. The high conductivity of stainless steel also makes it an ideal substrate for OER. These facts imply that stainless steel should be a suitable candidate as an OER electrode. Here, we report a simple solution treatment approach that enables stainless steel to be an efficient and stable OER electrode. It was found that a uniform brown film with highly rippled sheet structure could be in situ grown on stainless steel at room temperature by immersing it in an alkaline oxidant solution containing NaOH and (NH4)2S2O8. The composition of the brown film was found to include Fe(Ni)OOH by Raman and X‐ray photoelectron spectroscopy (XPS) analyses. In 1 M KOH electrolyte, the prepared OER electrode exhibited good electrocatalytic performance with a relatively low overpotential of 300 mV at a benchmark current density of 10 mA/cm2 and a small Tafel slope of 34 mV/decade. Moreover, this OER electrode showed excellent long‐term stability. This work highlights the possibility of potentially converting accessible materials into useful catalysts through simple chemical treatments.

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Biocorrosion of AISI 304 Stainless Steel by Desulfovibrio desulfuricans in Seawater

Cited by 34 publications

References 25 publications

Carbon steel corrosion induced by sulphate-reducing bacteria in artificial seawater: electrochemical and morphological characterizations

Carbon steel corrosion induced by sulphate-reducing bacteria in artificial seawater: electrochemical and morphological characterizations

XPS analysis of bio‐organic systems

In Situ Growth of Fe(Ni)OOH Catalyst on Stainless Steel for Water Oxidation

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