The effect of microfouling on marine corrosion of metals and destruction of protective coatings

Karpov, V. A.; Kovalchuk, Yu. L.; Kharchenko, U. V.; Беленева, И. А.

doi:10.1134/s207020511207009x

Cited by 9 publications

(4 citation statements)

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“…10,000 viruses; 1,000 bacteria; 110 cyanobacteria; 10 eukaryotic algae and 10 protists (Azam and Malfatti, 2007), not only cell-surface but also cell-cell interactions should influence adhesion. Karpov et al (2012) proposed the following types of biofilms observed during the first stage of fouling: type I is a film containing only living and dead bacterial cells over a surface; type II is a film of diatoms deposited on top of the bacterial layer; and type III is formed when related species settle on top of the diatom layer (Karpov et al, 2012). The latter type reached 4.5 mm in 10-15 days on surfaces immersed in the tropical South China Sea.…”

Section: Marine Biofilms Cause Biofoulingmentioning

confidence: 99%

Marine Biofilms: A Successful Microbial Strategy With Economic Implications

2018

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Bacteria and other microorganisms have evolved an ingenious form of life, where they cooperate and improve their chances of survival when subjected to environmental stress, called biofilms. In these communities of adhered cells, bacteria are protected by a matrix of extracellular polymeric substances that provide protection against e.g., temperature and pH fluctuations, UV exposure, changes in salinity, depletion of nutrients, antimicrobial compounds, and predation. Their success in marine environments and the number of bacterial cells in the sea, allow them to colonize nearly all man-made surfaces in contact with seawater. The costs to maritime transport, aquaculture, oil and gas industries, desalination plants and other industries are significant which has led to the development of various strategies to prevent biofilm formation and cleaning of infected surfaces. In this review, the benefits for bacterial cells to live in biofilms and the consequences to human activities are discussed.

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Section: Marine Biofilms Cause Biofoulingmentioning

confidence: 99%

Marine Biofilms: A Successful Microbial Strategy With Economic Implications

2018

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“…Marine biofouling communities are surface‐dwelling communities composed of all types of marine bacteria, invertebrates and diatoms, and interactions among these organisms govern the nature of biofouling communities (Mieszkin et al ., ; Lee et al ., ; Dang and Lovell, ). Microfouling organisms located on the surface of a marine substratum create serious issues worldwide, including an increase in drag force and metal corrosion, as well as a reduction in the efficiency of energy transfer (Dobretsov et al ., ; Karpov et al ., 2014b). Tributyltin‐based antifouling technologies have been considered the most effective approach for preventing the accumulation of fouling organisms (Omae, ; Chambers et al ., ).…”

Section: Introductionmentioning

confidence: 99%

Pyomelanin from Pseudoalteromonas lipolytica reduces biofouling

Zeng

Guo

Cai

et al. 2017

Microbial Biotechnology

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SummaryMembers of the marine bacterial genus Pseudoalteromonas are efficient producers of antifouling agents that exert inhibitory effects on the settlement of invertebrate larvae. The production of pigmented secondary metabolites by Pseudoalteromonas has been suggested to play a role in surface colonization. However, the physiological characteristics of the pigments produced by Pseudoalteromonas remain largely unknown. In this study, we identified and characterized a genetic variant that hyperproduces a dark‐brown pigment and was generated during Pseudoalteromonas lipolytica biofilm formation. Through whole‐genome resequencing combined with targeted gene deletion and complementation, we found that a point mutation within the hmgA gene, which encodes homogentisate 1,2‐dioxygenase, is solely responsible for the overproduction of the dark‐brown pigment pyomelanin. In P. lipolytica, inactivation of the hmgA gene led to the formation of extracellular pyomelanin and greatly reduced larval settlement and metamorphosis of the mussel Mytilus coruscus. Additionally, the extracted pyomelanin from the hmgA deletion mutant and the in vitro‐synthesized pyomelanin also reduced larval settlement and metamorphosis of M. coruscus, suggesting that extracellular pyomelanin released from marine Pseudoalteromonas biofilm can inhibit the settlement of fouling organisms.

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“…where Km -negative indicator of corrosion rate, g/m 2 •hour i -Corrosion rate in current units, A/cm 2 n -Number of electrons participating in the anodic process A -Atomic mass of the metal The corrosion rate calculated using this equation is Km =6.3•10 -2 g/m 2 •hour. This corrosion rate value, being slightly different from gravimetric measurements, is the actual corrosion rate in river water [6].…”

Section: Resultsmentioning

confidence: 99%

Corrosion of Carbon Steel in the Water Basins of Shemkir and Yenikend Hydroelectric Power Plants

Tahirli,

Verdiev,

Mammadova

et al. 2023

Chemical Problems

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Using gravimetric and electrochemical research methods, the corrosion-electrochemical behavior of carbon steel grade St3 in Kura river water has been. Gravimetric measurements were carried out under operating conditions of the Shemkir and Yenikend hydroelectric power stations for one year. Along with this, the ionic and bacteriological composition, as well as some physicochemical parameters of these waters were established. It revealed that St3 in the Kura water corrodes at a rate of (0.04÷0.05) g/m2•hour, which is characteristic of steel corrosion in fresh waters. In the atmosphere of hydraulic structures, steel corrodes at rather a low rate, i.e. (5÷6)10-3 g/m2 hour. As a result of biochemical analysis, sulfate-reducing bacteria (SRB) were discovered in these waters, which are a dangerous organism that releases the corrosive substance of H2S. By taking the anodic and cathodic polarization curves, a quasi-stationary steel corrosion rate was established to be 0.06g/m2 h.

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The effect of microfouling on marine corrosion of metals and destruction of protective coatings

Cited by 9 publications

References 0 publications

Marine Biofilms: A Successful Microbial Strategy With Economic Implications

Marine Biofilms: A Successful Microbial Strategy With Economic Implications

Pyomelanin from Pseudoalteromonas lipolytica reduces biofouling

Corrosion of Carbon Steel in the Water Basins of Shemkir and Yenikend Hydroelectric Power Plants

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