Characterization of Corrosive Bacterial Consortia Isolated from Water in a Cooling Tower

Rajasekar, Aruliah; Ting, Yen‐Peng

doi:10.1155/2014/803219

Cited by 20 publications

(14 citation statements)

References 57 publications

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“…Two different sizes of metal coupons were used in the present investigation: a round coupon with diameter of 10 mm for EIS analysis and a 7.5 cm × 1 cm × 0.1 cm coupon for the weight loss experiment. 41…”

Section: Methodsmentioning

confidence: 99%

Impact and Role of Bacterial Communities on Biocorrosion of Metals Used in the Processing Industry

et al. 2019

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In the present study, the effects of the corrosive bacterial community and the biofilm on cooling water systems made from mild steel (MS) and brass (BR) were studied under field exposure conditions using electrochemical impedance spectroscopy measurements, scanning electron microscope, and X-ray diffraction methods. Results from16S rRNA gene sequences showed that the predominant bacteria species detected in the biofilm of MS and BR metals during 360 days of exposure were Bacillus cereus EN14, Achromobacter xylosoxidans EN15, A. xylosoxidans EN16, and B. cereus EN17. The weight loss results revealed that a higher corrosion rate was observed in MS (0.7 ± 0.1 mm/y) compared with that in BR (0.17 ± 0.05 mm/y) at the end of the exposure period. This can be explained by the bacterial communities enhancing the corrosion rates by creating a local corrosive environment. Scanning electron microscope images revealed the adsorption of biofilm on the MS and BR surfaces following180 days of exposure. From the electrochemical impedance study, a higher charge transfer resistance (Rct) was obtained for BR (119.6 Ω cm2) when compared with that of MS (43.4 Ω cm2). This study explains the role of bacterial communities and their mechanisms in the corrosion of MS and BR in cooling water systems.

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Section: Methodsmentioning

confidence: 99%

Impact and Role of Bacterial Communities on Biocorrosion of Metals Used in the Processing Industry

et al. 2019

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“…According to Aruliah and Ting (2014), twelve 250 mL conical flasks were prepared. Each flask contains a 100 mL sterile test water sample which was previously sterilized by autoclaving and inserted three peace of prepared coupons.…”

Section: Weight Loss Methodsmentioning

confidence: 99%

“…Microbiologically Influenced Corrosion (MIC) is directly related to the presence and adherence of the microbes on industrial pipes subsequent metal deterioration and damage as a result of microbial activities that modify local chemistry at metal surfaces caused biocorrosion (Gu et al, 2019). Biofilm extracellular polysaccharide substance has sticky properties that aid the adherence to metal surfaces and protect bacterial elimination by biocides subsequently causing corrosion (Aruliah and Ting, 2014). The mixed culture biofilm type showed synergistic interaction.…”

Section: Introductionmentioning

confidence: 99%

A Powerful Nanocomposite Polymer Prepared From Metal Oxide Nanoparticles Synthesized via Brown Algae as Anti-corrosion and Anti-biofilm

et al. 2019

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Chemical corrosion and bio-corrosion in water pipelines are the most common problem in the industry worldwide which cause damage to expensive equipment and increase the maintenance costs. In the current study, the nanocomposite composed of ZnO and CuO nanoparticles was successfully synthesized using brown algae (Sargassum muticum) extract and then dispersed in polyethylene oxide polymer. The synthesized nanoparticles were exposed to gamma radiation to reduce their particle size. The synthesized nanocomposites were characterized using UV-vis spectroscopy, Dynamic light scattering (DLS), X-ray diffraction (XRD), Transmission electron microscopy (TEM), and FTIR analysis, then, the anti-biofilm and anti-adherence efficacy of nanocomposite were evaluated. The results revealed that gamma radiation reduced the particle size of ZnO and CuO nanoparticles to l5 and 20 nm, respectively. Also, the results showed a significant reduction (P < 0.001) in biofilm formation and adherence of Proteus mirabilis (P. mirabilis), Pseudomonas aeruginosa (P. aeruginosa), and Staphylococcus aureus (S. aureus) to carbon mild steel coupon C1010. In addition, from all the tested strains, P. mirabilis caused the highest bio-corrosion rate 1.5 mpy on mild steel coupon and nanocomposite prevented its adhesion as confirmed by Scanning electron microscope (SEM). Furthermore, the nanocomposite at 150 ppm showed the highest anti-corrosion activity 92.3% in 1 M HCl and exhibited mix-type inhibitor (cathodic and anodic). Finally, the results concluded that the green synthesized nanocomposite had multi-function to be used as anti-biofilm, bio-corrosion inhibitor, and anti-corrosion.

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“…Studies have shown that ISO has a strong inhibitor efficacy on the growth of SRB not only in cooling towers but also in oilfield injection, paper-mill and metalworking fluid systems [12][13][14]. Aruliah et al (2014) reported significantly less pitting corrosion on the surfaces of copper in the presence of the bronopol [15]. It has also been reported that, while glutaraldehyde (GD) is very effective on SRB on carbon steel surfaces, inhibiting localized corrosion significantly, azole is particularly effective on SRB on copper alloys [16].…”

Section: Introductionmentioning

confidence: 99%

Biocides Effect on the Microbiologically Influenced Corrosion of Pure Copper by Desulfovibrio sp.

Onan

Ilhan-Sungur

Güngör³

et al. 2018

J. Electrochem. Sci. Technol

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The aims of this study were to determine the corrosion behavior of pure copper in the presence of Desulfovibrio sp. and also to investigate the effects of glutaraldehyde (GD) and isothiazolinone (ISO) on the corrosion behavior of pure copper in the presence of this sulfate-reducing bacteria (SRB) strain by using electrochemical techniques. Electrochemical measurements of pure copper were carried out at specified time intervals (0, 8, 24, 48, and 96 hr) over a period of exposure. Corrosion rates of pure copper from anodic and cathodic Tafel slopes and corrosion potential (E c o r r) were determined. Biofilm and corrosion products on the copper surfaces were observed by Field Emission Scanning Electron Microscopy (FESEM) and Energy Dispersive X-Ray Spectrometry (EDS) analyses. The effects of solution types (PC (Postgate's C medium) and SRB (Desulfovibrio sp.)) and exposure times of copper and biocides (ISO or GD) on the corrosion rates of pure copper were evaluated by statistical analyses. As a result of the FESEM analysis, biofilm formation was observed on the surfaces of pure copper exposed to the Desulfovibrio sp. cultures both with and without the biocides. The results show that the pure copper was corroded by Desulfovibrio sp. However, the addition of GD or ISO to the Desulfovibrio sp. culture resulted in a decrease in the corrosion rate of the pure copper. It was also observed that both of the biocides showed a similar effect on pure copper's corrosion rate caused by Desulfovibrio sp.

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Characterization of Corrosive Bacterial Consortia Isolated from Water in a Cooling Tower

Cited by 20 publications

References 57 publications

Impact and Role of Bacterial Communities on Biocorrosion of Metals Used in the Processing Industry

Impact and Role of Bacterial Communities on Biocorrosion of Metals Used in the Processing Industry

A Powerful Nanocomposite Polymer Prepared From Metal Oxide Nanoparticles Synthesized via Brown Algae as Anti-corrosion and Anti-biofilm

Biocides Effect on the Microbiologically Influenced Corrosion of Pure Copper by Desulfovibrio sp.

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