Filtration–UV irradiation as an option for mitigating the risk of microbiologically influenced corrosion of subsea construction alloys in seawater

Machuca, Laura L.; Jeffrey, R.; Bailey, Stuart; Gubner, Rolf; Watkin, Elizabeth; Ginige, Maneesha P.; Kaksonen, Anna H.; Heidersbach, Krista

doi:10.1016/j.corsci.2013.10.030

Cited by 40 publications

(23 citation statements)

References 48 publications

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“…Little attention has been given to the influence of natural exposure conditions. This includes the influence of the nutrient content in seawater on mass loss and pitting, considered mainly in laboratory settings [9] for short term exposures but more recently considered for much longer exposure periods under field conditions [1,10].…”

Section: Introductionmentioning

confidence: 99%

Technical Note: Rust Removal from Steel Coupons After Short-Term Marine Immersion

Chaves¹,

Jeffrey²,

Melchers³

2015

Corrosion

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The quantification of mass loss, surface topography, depth of pitting and localized corrosion for steels subject to marine corrosion requires the removal of rusts, preferably without causing additional mass loss, pitting or other damage. Conventional procedures using inhibited hydrochloric acid or Clarke's solution are shown to remove short-term marine rusts but also to cause new corrosion including pitting and related rust products. Both increase with longer exposure to the cleaning solutions. Water washing with soft water left calcareous materials on the metal surface. Ultrasonic removal did not cause additional corrosion but was effective only for very light rusts. Although relatively slow, electrolytic cleaning (electrolysis) produced clean surfaces without new corrosion.

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Section: Introductionmentioning

confidence: 99%

Technical Note: Rust Removal from Steel Coupons After Short-Term Marine Immersion

Chaves¹,

Jeffrey²,

Melchers³

2015

Corrosion

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“…It is obvious that diatoms are important in the biofouling community that develops on SS and other artificial substrata in natural freshwaters. In spite of its importance, diatom populations remain poorly documented compared to other microorganisms, namely, bacteria, especially in studies dealing with potential ennoblement [ 17 , 30 , 31 ]. In the present study, the immersion of SS substrata in the natural river for about six months led to the development of heterogeneous biofilms highly enriched with diatoms.…”

Section: Discussionmentioning

confidence: 99%

Diagnosis of the Diatom Community upon Biofilm Development on Stainless Steels in Natural Freshwater

2017

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This paper reports the development of biofilms on stainless steels (SS) upon exposure in a natural freshwater ecosystem for about six months and focuses on the composition of diatom populations. By using environmental scanning electron microscopy (ESEM) technique, we provide a detailed description regarding diatom identification at species level as well as their main characteristics, including type, morphology, ability to form colony, and motility. Results reveal the presence of both prostrate (initial colonizers) and stalked (late colonizers) forms. Pennate diatoms, Cocconeis placentula and Amphora coffeaeformis, and a centric diatom, Melosira varians, are shown to be the abundant forms regardless of the SS type. Pennate diatoms dominate the community and are directly attached to the substratum, whereas the centric form is entangled in the biofilm matrix in a significant number. The dominance of adnate forms suggests that these cells are sturdy and successfully maintaining their population. In situ monitoring of the electrochemical response of immersed materials showed ennoblement of the open circuit potential, which seems to be due to the biogenic production of H2O2, detected in a significant amount within the biofilms. The substantial enrichment of biofilms with diatoms potentially suggests the implication of these microorganisms in the process of ennoblement. A mechanism is proposed in this paper describing the possible interactions of diatom community with SS in the studied ecosystem.

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“…Natural seawater sources contain a diverse community of microorganisms and macroorganisms, including microbes, algae, invertebrate larvae, and other macroorganisms. The accumulation of microorganisms on the materials surface can also lead to microbially-induced corrosion (MIC), which has been extensively investigated for decades [3][4][5][6][7]. Macroorganisms interact with the biofilm and colonize on the surface [8,9], and the resultant growth of macroorganisms is a major industrial problem causing the corrosion of offshore structures [10,11].…”

Section: Introductionmentioning

confidence: 99%

The Interaction of Biofoulants and Calcareous Deposits on Corrosion Performance of Q235 in Seawater

et al. 2020

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An understanding of the interaction of calcareous deposits and biofoulants on the corrosion performance of steel during the fouling stage is both interesting and necessary. So, the effects of these factors on Q235 carbon steel were investigated and discussed for 20 weeks under real ocean conditions. The results indicate that calcareous deposits are favorable for the attachment of marine microorganisms. However, macroorganisms prefer adhering directly to the substrate. The generations of calcareous deposits have priority over the biofilm attachment under the condition of cathodic protection. Calcareous deposits can prevent steel against corrosion for four weeks without cathodic protection.

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Filtration–UV irradiation as an option for mitigating the risk of microbiologically influenced corrosion of subsea construction alloys in seawater

Abstract: Filtration-UV irradiation as an option for mitigating the risk of microbiologically influenced corrosion of subsea construction alloys in seawater, Corrosion Science (2013),

Cited by 40 publications

References 48 publications

Technical Note: Rust Removal from Steel Coupons After Short-Term Marine Immersion

Technical Note: Rust Removal from Steel Coupons After Short-Term Marine Immersion

Diagnosis of the Diatom Community upon Biofilm Development on Stainless Steels in Natural Freshwater

The Interaction of Biofoulants and Calcareous Deposits on Corrosion Performance of Q235 in Seawater

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