Corrosion of carbon steel induced by a microbial-enhanced oil recovery bacterium Pseudomonas sp. SWP-4

The objective of this study was to compare the potential of mono-rhamnolipids (mono-RML) and di-rhamnolipids (di-RML) against biofilm formation on carbon steel coupons submitted to oil produced water for 14 days. The antibiofilm effect of the RML on the coupons was analyzed by scanning electron microscopy (SEM) and by epifluorescence microscopy, and the contact angle was measured using a goniometer. SEM analysis results showed that all RML congeners had effective antibiofilm action, as well as preliminary anticorrosion evaluation confirmed that all RML congeners prevented the metal deterioration. In more detail, epifluorescence microscopy showed that mono-RML were the most efficient congeners in preventing microorganism's adherence on the carbon steel metal. Image analyses indicate the presence of 15.9%, 3.4%, and <0.1% of viable particles in di-RML, mono/di-RML and mono-RML pretreatments, respectively, in comparison to control samples. Contact angle results showed that the crude carbon steel coupon presented hydrophobic character favoring hydrophobic molecules adhesion. We calculated the theoretical polarity of the RML congeners and verified that mono-RML (log P = 3.63) presented the most hydrophobic character. This had perfect correspondence to contact angle results, since mono-RML conditioning (58.2 ) more significantly changed the contact angle compared with the conditioning with one of the most common surfactants used on oil industry (29.4 ). Based on the results, it was concluded that rhamnolipids are efficient molecules to be used to avoid biofilm on carbon steel metal when submitted to oil produced water and that a higher proportion of mono-rhamnolipids is more indicated for this application.

show abstract

“…Lan et al 37 showed a moderate reduction of the carbon steel corrosion by RML from Pseudomonas sp. SWP‐4 37 …”

Section: Resultsmentioning

confidence: 99%

“…Dagbert and coauthors, for example, showed by SEM images the protection effect of biosurfactant of Pseudomonas fluorescens against corrosion in stainless steel 9 . Lan et al 37 showed a moderate reduction of the carbon steel corrosion by RML from Pseudomonas sp. SWP‐4 37 …”

Section: Resultsmentioning

confidence: 99%

Antibiofilm effect of mono‐rhamnolipids and di‐rhamnolipids on carbon steel submitted to oil produced water

Rocha

Castilho

Castro

et al. 2021

Biotechnology Progress

View full text Add to dashboard Cite

show abstract

“…Nyquist plots of A36 CS specimens immersed in sterile artificial seawater without and with mono-and dual-species cultures at different time are shown in Fig. 6a-d 4 Variations of open-circuit potential (E OCP ) with incubation time for A36 CS immersed in sterile artificial seawater and in the presence of both mono-and dual-species cultures at 30 °C exposure but was subsequently enlarged due to the resulting corrosion products on the surface as a passive layer [32].…”

Section: Eismentioning

confidence: 99%

Inhibitory Effect of Vibrio neocaledinocus sp. and Pseudoalteromonas piscicida Dual-Species Biofilms on the Corrosion of Carbon Steel

Moradi

Liu

et al. 2021

Acta Metall. Sin. (Engl. Lett.)

View full text Add to dashboard Cite

Multi-species biofilms are found in various bacterial habitats and have industrial relevance. These complex bacterial communities have synergetic effects, unlike a single species. Therefore, it is critical to evaluate these complex communities as a whole. Here, the inhibitory effect of single-and dual-species biofilms of Vibrio neocaledinocus sp. and Pseudoalteromonas piscicida for A36 carbon steel corrosion was investigated. The results demonstrated that the synergistic interactions of the monoculture increased the overall biomass production of the dual-species biofilm, but the growth rate was reduced in the presence of the dual-species culture due to a lack of nutrients. Field emission scanning electron microscopy images also confirmed the development of biofilms-they became more homogenized via exposure time in both the mono-and dual-species cultures. The corrosion resistance of A36 carbon steel positively increased because of the dual-species interactions. This reached the highest value after four weeks of exposure. The highest corrosion inhibition efficiency of 99.8% was achieved in the dual-species cultures. Microbial community analysis revealed the high relative abundance of Pseudoalteromonas piscicida during the initial days of exposure, demonstrating the dominant role of this bacterium in the biofilm structure.

show abstract

“…and Escherichia coli (Jayaraman et al 1997a, b, c), Aspergillus niger and Aspergillus alliaceae (Joseph et al 2011), being investigated for this purpose. Recent works provide evidence that Pseudomonas bacteria species can inhibit corrosion (Cai et al 2021;Chongdar et al 2005;Lan et al 2017;Shainy et al 2016;Suma et al 2019;Volkland et al 2000). Particularly, Pseudomonas putida species has been established and demonstrated as a MICI agent which can inhibit corrosion in metals (Suma et al 2019).…”

Section: Introductionmentioning

confidence: 99%

The role of microbes in the inhibition of the atmospheric corrosion of steel caused by air pollutants

2023

View full text Add to dashboard Cite

Due to the presence of corrosive contaminants in the air, metals naturally corrode when exposed to the environment. Air pollution, in conjunction with climate conditions, may significantly deteriorate outdoor materials, especially metals and hence, the need for corrosion control. Using inhibitors is a powerful strategy that is frequently employed for corrosion prevention and control. Chemical inhibitors are often used. However, due to their low effectiveness and stringent environmental regulations, the majority of chemical corrosion inhibition techniques are becoming less desirable. For this reason, there is an increasing interest in and focus on biological inhibition approaches, which most recently have included the use of microbes. Microbiologically-influenced corrosion inhibition (MICI) is apparently far more complex than traditional corrosion inhibition procedures. A current overview of the mechanisms that have been used or may be efficient for MICI technologies is important in order to facilitate the advancement of MICI and its practical industrial applications, especially for atmospheric corrosion caused by air pollutants, for which there is little information in the reviewed literature. Therefore, this review addresses the role of microbes, like Pseudomonas putida, in the inhibition of atmospheric corrosion of metals and brings the reader up-to-date on the few literatures existing on the subject. The review describes and characterizes MICI for atmospheric corrosion as a developing field still in need of enthusiastic researchers to further investigate the area in order to establish useful methodologies, procedures, and technologies for later adoption in industrial terrains and applications.

show abstract

Corrosion of carbon steel induced by a microbial-enhanced oil recovery bacterium Pseudomonas sp. SWP-4

Abstract: Pseudomonas sp. SWP-4 has been proved to enhance oil recovery effectively.

Cited by 11 publications

References 42 publications

Antibiofilm effect of mono‐rhamnolipids and di‐rhamnolipids on carbon steel submitted to oil produced water

Antibiofilm effect of mono‐rhamnolipids and di‐rhamnolipids on carbon steel submitted to oil produced water

Inhibitory Effect of Vibrio neocaledinocus sp. and Pseudoalteromonas piscicida Dual-Species Biofilms on the Corrosion of Carbon Steel

The role of microbes in the inhibition of the atmospheric corrosion of steel caused by air pollutants

Contact Info

Product

Resources

About