Microbiologically influenced corrosion of 304 stainless steel by aerobic Pseudomonas NCIMB 2021 bacteria: AFM and XPS study

Yuan, Shaojun; Pehkonen, Simo O.

doi:10.1016/j.colsurfb.2007.04.020

Cited by 230 publications

(142 citation statements)

References 30 publications

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“…This in turn provides breeding sites for microorganisms, thereby compromising the efficacy of cleaning and disinfection procedures and encourages more biofilm adhesion and biofilm resistance to detachment. The biofilms probably do not participate directly in the corrosion process, b u t t h e y c a n l e a d t o s o m e c h a n g e s o f t h e interfacial environment by the increase of cells concentration that facilitates the corrosion process on the surface (Yuan & Pehkonen, 2007).…”

Section: Corrosion Severitymentioning

confidence: 99%

Electrochemical Behaviour of AISI 304 Stainless Steel Immersed in Mixtures Consisting by Biocide and Fungal Suspensions

Stoica¹,

Alexe²,

Dinică³

et al. 2012

Food Industrial Processes - Methods and Equipment

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Section: Corrosion Severitymentioning

confidence: 99%

Electrochemical Behaviour of AISI 304 Stainless Steel Immersed in Mixtures Consisting by Biocide and Fungal Suspensions

Stoica¹,

Alexe²,

Dinică³

et al. 2012

Food Industrial Processes - Methods and Equipment

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“…In addition, scanning electron microscopy (SEM) was used to examine the surface after the corrosion measurements. P. aeruginosa was chosen due to its widespread behaviour in nature [14][15] . The microorganism used in this study is an aerobic, heterotroph, motile, Gram-negative bacterium, producing large amount of exopolysaccharide, called biofilm.…”

Section: Introductionmentioning

confidence: 99%

THE INFLUENCE OF Pseudomonas aeruginosa ON CORROSION BEHAVIOR OF NICKEL-COBALT ALLOY

San¹,

Nazır²

2011

Communications, Faculty of Science, University of Ankara Series B Chemistry and Chemical Engineering

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The aim of this study was to determine the effect of Pseudomonas aeruginosa bacterium on the corrosion of nickel-cobalt (Ni-Co) alloy. The corrosion rate was determined with using of Tafel slopes and Electrochemical Impedance Spectroscopy (EIS). The morphology and the formation of the alloy surface were observed by scanning electron microscopy (SEM) and energy dispersive X-ray spectra (EDS) analysis. It was observed from the Tafel plots that the polarization resistance decreases and the current density increases with a change in time. This was attributed accumulation to the biofilm on the surface and therefore surface became pitted. The Nyquist semicircles tended to open at lower frequencies which indicated the crevice of the surface and the rupture of protective film.

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“…approximately 4000 times the residual chlorine level required to treat natural seawater) 7-9 for 30 minutes, followed by overnight treatment with glutaraldehyde. 10 Others employed fine Mg(OH) 2 suspensions and high-purity acetone; 11 overnight immersion in 70 vol% ethanol, followed by drying aseptically in air; 12 9 h heat treatments at 130…”

mentioning

confidence: 99%

Efficacy of Sterilization Methods and Their Influence on the Electrochemical Behavior of Plain Carbon Steel

Giai

Ortiz

Kappes

et al. 2016

J. Electrochem. Soc.

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Minimizing contamination of control treatments in microbiologically influenced corrosion (MIC) studies is of critical importance. Metal sterilization procedures should not alter the surface nor affect the inherent susceptibility of the metal to corrosion while adequately deactivating biological activity. However, there is no consensus in the literature regarding such procedures due to, in part, the lack of a universally accepted methodology. This investigation evaluates various sterilization methods for carbon steel concerning practicality, efficacy, and effects on the electrochemical response of the metal. Three sterilization procedures using i) dry heat, ii) ethanol, or iii) glutaraldehyde as sterilizing agents were evaluated. Even though all sterilization approaches were equally effective in eliminating microorganisms and spores from the metal surface, dry heating at 170 • C in an inert atmosphere was identified as the most convenient sterilization method regarding practicality and consistency in the electrochemical response of the metal. Sterilization of carbon steels in 75 vol% ethanol and glutaraldehyde, as well as alcohol followed by flaming, is discouraged given the large dispersion in corrosion response caused by the exposure to the sterilization media. Microbiologically influenced corrosion (MIC) studies deal with the role microorganisms have on electrochemical processes leading to corrosion.1-3 As bacteria and fungi interact with the metal surface and its environment, they are able "to initiate, facilitate or accelerate the corrosion reaction without changing its electrochemical nature."4 The ubiquitous nature of some microorganisms can present a challenge to MIC studies, where contamination with species of diverse metabolic capabilities can alter the result of the experiments. Therefore, minimizing contamination from foreign microorganisms to maintain a microbial community that properly reflects the desired microbial composition (i.e. these being an environmental sample or a specifically defined community) is of critical importance in MIC research.Most of the components used in an MIC study (i.e. glassware, reactors or electrochemical cells, and solutions) can be sterilized following standard sterilization procedures 5 used by microbiologists; however, there is no consensus regarding sterilization procedures for metal samples in the literature. In the ideal situation, the sterilization methodology should kill all microorganisms and spores on the metal, but it should not alter its surface nor affect the inherent susceptibility of the metal on corrosion.In a literature survey of over 200 papers dealing with MIC of carbon and low alloy steels, there were over 20 different procedures to sterilize metal samples, Table I. Some of the methods described in the literature range from autoclaving steel stubs inside of watertight containers, submerging the stubs in 70 vol% ethyl alcohol and flaming them before inoculation, 6 to immersion in a 2000 ppm chlorine solution (i.e. approximately 4000 times the residual...

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Microbiologically influenced corrosion of 304 stainless steel by aerobic Pseudomonas NCIMB 2021 bacteria: AFM and XPS study

Cited by 230 publications

References 30 publications

Electrochemical Behaviour of AISI 304 Stainless Steel Immersed in Mixtures Consisting by Biocide and Fungal Suspensions

Electrochemical Behaviour of AISI 304 Stainless Steel Immersed in Mixtures Consisting by Biocide and Fungal Suspensions

THE INFLUENCE OF Pseudomonas aeruginosa ON CORROSION BEHAVIOR OF NICKEL-COBALT ALLOY

Efficacy of Sterilization Methods and Their Influence on the Electrochemical Behavior of Plain Carbon Steel

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