Microbial corrosion of P235GH steel under geological conditions

Hajj, Hicham El; Abdelouas, Abdesselam; Grambow, Bernd; Martin, Christelle; Dion, Michel

doi:10.1016/j.pce.2010.04.007

Cited by 44 publications

(50 citation statements)

References 33 publications

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“…The study implicates the importance of D. geothermicum in the corrosion of cooling towers of the petroleum refinery. In another study, corrosion was found to be enhanced under biotic conditions in steel containers meant for nuclear waste disposal in a repository, thereby indicating the possibility of SRB growth (including Desulfotomaculum) and faster corrosion under the disposal condition, if water is available [20]. The studies performed until now are mostly on carbon steel and low alloy steel and relate to (i) MIC under in-plant test conditions, (ii) characterization of corrosion products, (iii) effect of biocides on MIC, and (iv) influence of change in anodic and cathodic tafel slopes on corrosion reactions.…”

Section: Introductionmentioning

confidence: 99%

Microbial influenced corrosion by thermophilic bacteria

2011

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The present study was undertaken to investigate microbial influenced corrosion (MIC) on stainless steels due to thermophilic bacteria Desulfotomaculum nigrificans. The objective of the study was to measure the extent of corrosion and correlate it with the growth of the biofilm by monitoring the composition of its extracellular polymeric substances (EPS). The toxic effect of heavy metals on MIC was also observed. For this purpose, stainless steels 304L, 316L and 2205 were subjected to electrochemical polarization and immersion tests in the modified Baar's media, control and inoculated, in anaerobic conditions at room temperature. Scanning electron microscopy (SEM)/ energy dispersive spectroscopy (EDS) were used to identify the chemicals present in/outside the pit. The results show maximum corrosive conditions when bacterial activity is highest, which in turn minimizes the amount of carbohydrate and protein along with the increase in the fraction of uronic acid in carbohydrate in EPS of the biofilm. However, although bacterial activity and corrosion rate decreases, the amount of biofilm components continue to increase. It is also observed that the toxicity of metals ions affect the bacterial activity and EPS production. It was observed that Desulfotomaculum sp. has the ability to biodegrade its own EPS.

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Section: Introductionmentioning

confidence: 99%

Microbial influenced corrosion by thermophilic bacteria

2011

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“…Results are presented in (El Hajj et al, 2010). Corrosion rates were about twice as high in presence of sulfate reducing bacteria (SRB) compared to sterile conditions.…”

Section: Resultsmentioning

confidence: 99%

Nuclear waste disposal: I. Laboratory simulation of repository properties

Grambow

Landesman

Ribet

2014

Applied Geochemistry

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“…XRD analyses of the Callovo-Oxfordian clay rock reveal a dominant argillaceous phase (45% illite and interstratified illite/smectite), a calcium carbonate phase, mainly calcite (25%), and a siliciclastic phase, mostly quartz (25%). Other phases (feldspar, pyrite) and organic matter have been observed, but in mass quantities of less than a few percent [28]. The cement studied is class G Portland cement and was prepared according to the API-ISO 10426A norm (349 ± 0.5 g of water mixed with 792 ± 0.5 g of cement).…”

Section: Methodsmentioning

confidence: 99%

Experimental Modelling of the Caprock/Cement Interface Behaviour under CO2 Storage Conditions: Effect of Water and Supercritical CO2 from a Cathodoluminescence Study

et al. 2018

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Abstract:In the framework of CO 2 geological storage, one of the critical points leading to possible important CO 2 leakage is the behaviour of the different interfaces between the rocks and the injection wells. This paper discussed the results from an experimental modelling of the evolution of a caprock/cement interface under high pressure and temperature conditions. Batch experiments were performed with a caprock (Callovo-Oxfordian claystone of the Paris Basin) in contact with a cement (Portland class G) in the presence of supercritical CO 2 under dry or wet conditions. The mineralogical and mechanical evolution of the caprock, the Portland cement, and their interface submitted to the attack of carbonic acid either supercritical or dissolved in a saline water under geological conditions of pressure and temperature. This model should help to better understand the behaviour of interfaces in the proximal zone at the injection site and to prevent risks of leakage from this critical part of injection wells. After one month of ageing at 80 • C under 100 bar of CO 2 pressure, the caprock, the cement, and the interface between the caprock and cement are investigated with Scanning Electron Microscopy (SEM) and cathodoluminescence (CL). The main results reveal (i) the influence of the alteration conditions: with dry CO 2 , the carbonation of the cement is more extended than under wet conditions; (ii) successive phases of carbonate precipitation (calcite and aragonite) responsible for the loss of mechanical cohesion of the interfaces; (iii) the mineralogical and chemical evolution of the cement which undergoes successive phases of carbonation and leaching; (iv) the limited reactivity of the clayey caprock despite the acidic attack of CO 2 ; and (v) the influence of water on the transport mechanisms of dissolved species and thus on the location of mineral precipitations.

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Microbial corrosion of P235GH steel under geological conditions

Cited by 44 publications

References 33 publications

Microbial influenced corrosion by thermophilic bacteria

Microbial influenced corrosion by thermophilic bacteria

Nuclear waste disposal: I. Laboratory simulation of repository properties

Experimental Modelling of the Caprock/Cement Interface Behaviour under CO2 Storage Conditions: Effect of Water and Supercritical CO2 from a Cathodoluminescence Study

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