Axenic aerobic biofilms inhibit corrosion of SAE 1018 steel through oxygen depletion

Jayaraman, Arul; Cheng, Evaline; Earthman, James C.; Wood, Thomas K.

doi:10.1007/s002530051007

Cited by 98 publications

(46 citation statements)

References 16 publications

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“…A protective effect of Pseudomonas fragi and Escherichia coli DH5 was found by Jayaraman et al (13). Here, the formation of a biofilm was crucial, as oxygen depletion under the biofilm was responsible for the corrosion protection (12). However, the mechanical instability of biofilms was seen as a drawback for their technical application.…”

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confidence: 94%

Bacterial Phosphating of Mild (Unalloyed) Steel

Volkland

Harms

Müller

et al. 2000

Appl Environ Microbiol

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Mild (unalloyed) steel electrodes were incubated in phosphate-buffered cultures of aerobic, biofilm-forming Rhodococcus sp. strain C125 and Pseudomonas putida mt2. A resulting surface reaction leading to the formation of a corrosion-inhibiting vivianite layer was accompanied by a characteristic electrochemical potential (E) curve. First, E increased slightly due to the interaction of phosphate with the iron oxides covering the steel surface. Subsequently, E decreased rapidly and after 1 day reached ؊510 mV, the potential of free iron, indicating the removal of the iron oxides. At this point, only scattered patches of bacteria covered the surface. A surface reaction, in which iron was released and vivianite precipitated, started. E remained at ؊510 mV for about 2 days, during which the vivianite layer grew steadily. Thereafter, E increased markedly to the initial value, and the release of iron stopped. Changes in E and formation of vivianite were results of bacterial activity, with oxygen consumption by the biofilm being the driving force. These findings indicate that biofilms may protect steel surfaces and might be used as an alternative method to combat corrosion.Due to the poor corrosion resistance of mild (unalloyed) steel, virtually all items made of this material have to be protected against corrosion. The most common protection method is phosphating, i.e., coating the steel surface with the phosphates of zinc, iron, or manganese (34). This procedure is carried out at temperatures up to 95°C and pH values between 2 and 3.5 (21). Media used for phosphating normally contain high concentrations of zinc (in the range of several grams per liter) or manganese and also contain accelerators like nitrate, nitrite, chlorate, peroxides, and organic nitrocompounds (31). During phosphating, a considerable amount of heavy metal sludge is formed and must be removed. Several attempts have been made to develop alternative methods that are less toxic to the environment.Pedersen et al. (17) showed that Pseudomonas sp. strain S9 and Serratia marcescens sp. strain EF 190 can decrease the corrosion rate of mild steel when applied as dense suspensions (10 9 ml Ϫ1 ) or as living biofilms (17)(18)(19). A protective effect of Pseudomonas fragi and Escherichia coli DH5 was found by Jayaraman et al. (13). Here, the formation of a biofilm was crucial, as oxygen depletion under the biofilm was responsible for the corrosion protection (12). However, the mechanical instability of biofilms was seen as a drawback for their technical application.In a recent study (32), we showed that growing the aerobic biofilm-forming bacteria Rhodococcus sp. strain C125 and Pseudomonas putida mt2 in mineral medium containing more than 2 mM phosphate induced a surface reaction on mild steel coupons, resulting in the formation of vivianite. Vivianite, a barely insoluble iron(II) phosphate, is one of the compounds formed in technical acidic phosphating and is known for its corrosion protective effect. The biologically vivianite-coated steel coupons showed goo...

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confidence: 94%

Bacterial Phosphating of Mild (Unalloyed) Steel

Volkland

Harms

Müller

et al. 2000

Appl Environ Microbiol

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“…Do istog zaključka došli su i Jayaraman sa saradnicima [26,35,36] u svojim istrazivanjima ispitujući koroziono ponašanje čelika (SAE 1018), bakra i aluminijuma [37] u prisustvu različitih bakterija (Bacillus brevis 18 i Pseudomonas fragi K). Uočeno je da bakterije Pseudomonas fragi i Escherichia coli DH5α formiraju zaštitni biofilm na površini čelika štiteći ga na taj način od korozije.…”

Section: Inhibicija Korozije Pomoću Biofilmaunclassified

“…Aerobna vrsta P. fragi kao i anaerobna E. coli proizvode biofilmove koji su se pokazali kao efikasni inhibitori korozije. Biofilm sintetisan od strane aerobne bakterijske vrste se pokazao efikasnijim što dovodi do zaključka da potrošnja kiseonika od strane bakterijske vrste ima značajnu ulogu u procesu korozije [26,35]. Kao potencijalni inhibitori korozije čelika pokazale su se i bakterijske vrste Chryseobacterium indolgenes MUT.2 i Klebsiella pneumonia MUT.1 koje formiraju zaštitni sloj na površini čelika [38].…”

Section: Inhibicija Korozije Pomoću Biofilmaunclassified

Microorganisms as potential corrosion inhibitors of metallic materials

Tasić¹,

Antonijević²,

Petrović-Mihajlović³

2016

Rec odr raz

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IZVOD -Proces korozije predstavlja destrukciju kako metalnih tako i nemetalnih materijala usled hemijske ili elektrohemijske interakcije sa okolnom sredinom. Kao rezultat interakcija između površine metala i bakterijskih ćelija, odnosno njihovih metabolita nastaje mikrobiološki indukovana korozija. Međutim, neke vrste mikroorganizama utiču na smanjenje procesa korozije. Shodno tome, analizirana je literatura koja se bavi primenom mikroorganizama kao potencijalnih inhibitora korozije metala. Različite bakterijske vrste ispitivane su kao potencijalni inhibitori korozije. Istaknut je značaj samih mikroorganizama kao i uloga ekstracelularnih polimernih supstanci na koroziono ponašanje metala. Prikazano je da na stepen zaštite pored tipa primenjenog mikroorganizma, utiče i vrsta metala. Takođe, na osnovu prikazanih podataka može se videti da pojedine vrste mikroorganizma mogu uspešno zameniti organske inhibitore koji mogu biti toksični.Ključne reči: mikroorganizmi, korozija, metali, inhibitori, bakterijske vrste ABSTRACT -Corrosion presents the destruction of materials through chemical or electrochemical interactions with their environment. Interactions between the metal surface and bacterial cells or products of their metabolic activities can lead to microbially-influenced corrosion. Also, it is known that certain microorganisms can contribute to corrosion inhibition. In accordance to that, the literature dealing with the application of different microorganisms as a potentialy corrosion inhibitors of metals is investigated. Different bacterial strains as a corrosion

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“…The rate of decline of trend line in each treatment was faster than their corresponding high concentration formulations; furthermore, sulfate concentration was much lower at the 10th day. The studies of Jayaraman et al (1997) showed that for some SRB, nitrite has effects on variable acid suppression and H 2 S removal in the bioreactor, while nitrate are not valid in these areas. Therefore, nitrite is more effective in preventing some high-temperature oil field from acidizing, because of its direct reaction with the sulfide and is proved to be an effective inhibitor of sulfatereducing long-term.…”

Section: Changes Of Sulfate Concentration In the Experiments To Whichmentioning

confidence: 99%

Isolation of a nitrate-reducing bacteria strain from oil field brine and the inhibition of sulfate-reducing bacteria

Jazayeri¹,

Kohram

Salehi³

2011

Afr. J. Biotechnol.

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A nitrate-reducing bacteria (NRB) strain with vigorous growth, strong nitrate reduction ability, strain B9 2-1, was isolated from Suizhong36-1 oilfield, its routine identification and analysis of 16S rRNA and also the competitive inhibition experiments with the enrichment of sulfate-reducing bacteria (SRB) were carried out. The results showed that only the dosing of nitrate, nitrite as electron acceptors, the activation of nitrate-reducing bacteria, as well as the inhibition of sulfide production resulted from a limited capacity, while addition of NRB isolated from the produced fluid, growth and sulfide production activity of sulfate reducing bacteria produced a significant inhibition and antibacterial effects of nitrite, which was better than nitrate. At the same time, the small amount of molybdate dosing showed better results, which will be of significance when applied to shipping and state-defending industries.

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Axenic aerobic biofilms inhibit corrosion of SAE 1018 steel through oxygen depletion

Cited by 98 publications

References 16 publications

Bacterial Phosphating of Mild (Unalloyed) Steel

Bacterial Phosphating of Mild (Unalloyed) Steel

Microorganisms as potential corrosion inhibitors of metallic materials

Isolation of a nitrate-reducing bacteria strain from oil field brine and the inhibition of sulfate-reducing bacteria

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