Formation of Biofilms and Biocorrosion on AISI-1020 Carbon Steel Exposed to Aqueous Systems Containing Different Concentrations of a Diesel/Biodiesel Mixture

Melo, Ivanilda Ramos de; Filho, Severino Leopoldino Urtiga; Oliveira, Fernando J. S.; França, Francisca Pessôa de

doi:10.1155/2011/415920

Cited by 6 publications

(10 citation statements)

References 16 publications

(15 reference statements)

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“…Several studies report similar microorganisminduced corrosion rates as recorded in the current study. An assessment of microbial biofilms on carbon steel found comparable corrosion rates of 0.45±0.01-0.12±0.01 mm/year dependent on environmental conditions (De Melo et al, 2011). Pratikno and Titah (2016) observed corrosion rates of 0.5797-0.6173 mm/year in steel during a ten-day study in saline and seawater environments.…”

Section: Observed Corrosion Corrosion Rates and Environmental Influencesmentioning

confidence: 99%

“…It would mean that MIC in the more aerated systems is dominated by iron bacteria over the SRB. The presence of substantial numbers of iron oxidising bacteria, iron reducing bacteria and sulphate reducing bacteria has been recorded in biofilms from carbon steel associated with diesel and biodiesel mixtures (De Melo et al, 2011). SRB counts in soils around corroded pipelines ranged from 2.5 × 10 3 CFU/g -6.50 × 10 4 CFU/g.…”

Section: Microbial Influencesmentioning

confidence: 99%

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Environmental and Microbial Influences on Corrosion of Selected Types of Petroleum Industry Steel

Osadebe

Olorondu

Okpokwasili

2021

Environ. Nat. Resour. J.

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This study explored the influence of brackish water sediment, mangrove swamp sediment, clayey/lateritic soil, and river water (freshwater) sediment on the corrosion rates of carbon, mild, and stainless steels and the species of sulphate reducing bacteria (SRB) and iron bacteria associated with the process. The material loss following burial of the steel samples for a 9-month period was assessed. Standard and specialised microbiological techniques were employed in the characterisation of the bacterial species. Qualitative assessment for corrosion was done via optical microscopy and macroscopy. Corrosion was highest on steel buried in brackish water sediment and lowest in that from river water sediment. Carbon steel was the most susceptible to corrosion while stainless steel was the most resistant. Sulphite, sulphide, nitrate and phosphate concentrations had a strong impact on corrosion rates. Thiobacillus, Leptothrix and Gallionella dominated amongst the iron bacteria while Desulfobacter and Desulfovibrio dominated amongst the SRB. There were significant differences in corrosion rates and bacterial abundance from one environment to the other. Iron bacteria showed greater abundance than SRB across the different environments and steel types. Iron bacteria counts, however, did not correlate positively with corrosion rates. The findings suggest that oil industry facilities in brackish water environments are more liable to corrosion than those located in fresh water ecosystems.

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Section: Observed Corrosion Corrosion Rates and Environmental Influencesmentioning

confidence: 99%

Section: Microbial Influencesmentioning

confidence: 99%

Environmental and Microbial Influences on Corrosion of Selected Types of Petroleum Industry Steel

Osadebe

Olorondu

Okpokwasili

2021

Environ. Nat. Resour. J.

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“…According to Liu et al 36 and Melo et al 37 , the ferrous ions (Fe 2+ ) produced by the dissolution process reacted with sulfide metabolised by the bacteria with the subsequent production of different forms of iron sulfide Fe y S x (Mackinwita, Jarosita, Pirotita and Greigita).…”

Section: X-ray Diffraction Analysis (Xrd)mentioning

confidence: 99%

Biocorrosion on Surface of ASTM A283 Carbon Steel, Exposed in Diesel S10 and Tap Water

et al. 2018

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This paper sets out to evaluate the corrosion and biocorrosion of carbon steel ASTM A283 exposed to a Diesel S10 oil/tap water system under static conditions for 90 days. The following analyzes were performed: physico-chemical in tap water, sulfur content in Diesel S10 and quantification of sessile microorganisms in the biofilm formed on the metal. To monitor the corrosion process, mass loss, scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), confocal laser microscopy and X-ray diffraction (XRD) were performed. There were changes in the composition of the medium, correlated with the formation of corrosion and biofilm products. There was biodegradation of the fuel, which in contact with water influenced the development of microorganisms. Moreover, the corrosion rate was classified as moderate, the main form of corrosion being seen to be local alveolar corrosion. Therefore, the results revealed that water in diesel oil can be an aggravating factor in the process of corrosion and biocorrosion.

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“…In natural and human-made environments, metal and alloy corrosion ensue due to chemical or electrochemical interactions between the metal and its environment [1][2][3]. Microbially influenced corrosion (MIC), also known as biocorrosion, is a type of corrosion in which the deterioration of metal is initiated by the presence of microorganisms such as bacteria and the products of their metabolic activities [4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

“…Carbon steel is an iron (Fe) and carbon (C) alloy that contains about 98% Fe, less than 2% C, and other elements in small quantities, such as silicon (Si), phosphorus (P), sulfur (S), manganese (Mn), aluminum (Al), etc. [1]. The alloying elements confer the required properties, such as tensile strength, hardness, or corrosion resistance.…”

Section: Introductionmentioning

confidence: 99%

Role of Indigenous Bacteria in Corrosion of Two Types of Carbon Steel

Stancu

2022

Microorganisms

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This study aimed to investigate the presence of both aerobic and anaerobic bacteria in a water sample collected from a nuclear power plant and establish if the indigenous bacteria or the products of their metabolic activities could initiate the corrosion of two different types of carbon steel (i.e., A570, 1045). The aerobic (heterotrophic, iron-oxidizing) and anaerobic (sulfate-reducing) bacteria were detected in low numbers in the water sample. Three bacterial strains were isolated by the enrichment procedure from this sample. Based on phenotypic and genotypic characteristics, the isolated bacteria were identified as Stenotrophomonas maltophilia IBBCn1 (MT893712), Stenotrophomonas maltophilia IBBCn2 (MT893713), and Bacillus thuringiensis IBBCn3 (MT893714). The bacteria existing in the water sample were able to initiate the corrosion of carbon steel A570 and 1045. The sulfate-reducing bacteria were detected in higher numbers than the heterotrophic bacteria and iron-oxidizing bacteria at the end of the biocorrosion experiments. The carbon steel coupons revealed macroscopic and microscopic changes in the surface characteristics, and these changes could be due to biofilm formation on their surfaces and the accumulation of the corrosion products. The corrosion rate varied from one type of carbon steel to another, depending on the incubation conditions and the chemical composition of the coupons.

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Formation of Biofilms and Biocorrosion on AISI-1020 Carbon Steel Exposed to Aqueous Systems Containing Different Concentrations of a Diesel/Biodiesel Mixture

Cited by 6 publications

References 16 publications

Environmental and Microbial Influences on Corrosion of Selected Types of Petroleum Industry Steel

Environmental and Microbial Influences on Corrosion of Selected Types of Petroleum Industry Steel

Biocorrosion on Surface of ASTM A283 Carbon Steel, Exposed in Diesel S10 and Tap Water

Role of Indigenous Bacteria in Corrosion of Two Types of Carbon Steel

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