scholarly journals Effect of Multispecies Microbial Consortia on Microbially Influenced Corrosion of Carbon Steel

2021 ◽  
Vol 2 (2) ◽  
pp. 133-149
Author(s):  
Hoang C. Phan ◽  
Linda L. Blackall ◽  
Scott A. Wade
Keyword(s):  
Weight Loss ◽  
Desulfovibrio Desulfuricans ◽  
Steel Corrosion ◽  
Microbial Consortia ◽  
General Corrosion ◽  
Sulfate Reducing ◽  
Microbially Influenced Corrosion ◽  
Pure Cultures ◽  
Steel Weight ◽  
Mixed Communities

Microbially influenced corrosion (MIC) is responsible for significant damage to major marine infrastructure worldwide. While the microbes responsible for MIC typically exist in the environment in a synergistic combination of different species, the vast majority of laboratory-based MIC experiments are performed with single microbial pure cultures. In this work, marine grade steel was exposed to a single sulfate reducing bacterium (SRB, Desulfovibrio desulfuricans) and various combinations of bacteria (both pure cultures and mixed communities), and the steel corrosion studied. Differences in the microbial biofilm composition and succession, steel weight loss and pitting attack were observed for the various test configurations studied. The sulfate reduction phenotype was successfully shown in half-strength marine broth for both single and mixed communities. The highest corrosion according to steel weight loss and pitting, was recorded in the tests with D. desulfuricans alone when incubated in a nominally aerobic environment. The multispecies microbial consortia yielded lower general corrosion rates compared to D. desulfuricans or for the uninoculated control.

Pathogenicity of Pythium torulosum to roots of Agrostis palustris in black-layered sand produced by the interaction of the cyanobacteria species Lyngbya, Phormidium, and Nostoc with Desulfovibrio desulfuricans

1992 ◽  
Vol 70 (11) ◽  
pp. 2193-2197 ◽  
Author(s):  
Clinton F. Hodges
Keyword(s):  
Weight Loss ◽  
Key Words ◽  
Desulfovibrio Desulfuricans ◽  
Dry Weight ◽  
Agrostis Palustris ◽  
Golf Greens ◽  
Sulfate Reducing ◽  
Shoot Dry Weight ◽  
Black Layer ◽  
Pythium Torulosum

Studies were initiated to determine the pathogenicity of Pythium torulosum to Agrostis palustris roots growing in sand with subsurface black layer produced by the interaction of cyanobacteria and the sulfate-reducing bacterium Desulfovibrio desulfuricans. The interaction of P. torulosum with cyanobacteria and D. desulfuricans was also evaluated. Pythium torulosum decreased the dry weight of roots and shoots of A. palustris to 41 and 35%, respectively, of the control plants in the absence of black layer and the organisms responsible for its formation. The combination of P. torulosum and D. desulfuricans, in the absence of black layer, induced the most severe decrease in root (20% of controls) and shoot (25% of controls) dry weights. Damage to roots induced by P. torulosum in combination with various isolates of cyanobacteria, in the absence of black layer, was equal to that of P. torulosum alone; shoot dry weight loss was less than that caused by P. torulosum alone. Pathogenicity of P. torulosum to roots when combined with cyanobacteria and D. desulfuricans in the presence of black layer was the same as that with P. torulosum alone and in combination with cyanobacteria; shoot dry weight did not differ from that of P. torulosum combined with cyanobacteria. The presence of cyanobacteria with P. torulosum and D. desulfuricans in black-layered sand decreased root and shoot dry weight loss induced by the two latter organisms. Key words: anaerobic, black plug layer, golf greens, sulfate reduction.

scholarly journals Growth and Methane Oxidation Rates of Anaerobic Methanotrophic Archaea in a Continuous-Flow Bioreactor

2003 ◽  
Vol 69 (9) ◽  
pp. 5472-5482 ◽  
Author(s):  
Peter R. Girguis ◽  
Victoria J. Orphan ◽  
Steven J. Hallam ◽  
Edward F. DeLong
Keyword(s):  
Methane Oxidation ◽  
Continuous Flow ◽  
Molecular Techniques ◽  
Anaerobic Methane Oxidation ◽  
Cold Seep ◽  
Microbial Consortia ◽  
Sulfate Reducing ◽  
Oxidation Rates ◽  
In Situ Conditions ◽  
Pure Cultures

ABSTRACT Anaerobic methanotrophic archaea have recently been identified in anoxic marine sediments, but have not yet been recovered in pure culture. Physiological studies on freshly collected samples containing archaea and their sulfate-reducing syntrophic partners have been conducted, but sample availability and viability can limit the scope of these experiments. To better study microbial anaerobic methane oxidation, we developed a novel continuous-flow anaerobic methane incubation system (AMIS) that simulates the majority of in situ conditions and supports the metabolism and growth of anaerobic methanotrophic archaea. We incubated sediments collected from within and outside a methane cold seep in Monterey Canyon, Calif., for 24 weeks on the AMIS system. Anaerobic methane oxidation was measured in all sediments after incubation on AMIS, and quantitative molecular techniques verified the increases in methane-oxidizing archaeal populations in both seep and nonseep sediments. Our results demonstrate that the AMIS system stimulated the maintenance and growth of anaerobic methanotrophic archaea, and possibly their syntrophic, sulfate-reducing partners. Our data demonstrate the utility of combining physiological and molecular techniques to quantify the growth and metabolic activity of anaerobic microbial consortia. Further experiments with the AMIS system should provide a better understanding of the biological mechanisms of methane oxidation in anoxic marine environments. The AMIS may also enable the enrichment, purification, and isolation of methanotrophic archaea as pure cultures or defined syntrophic consortia.

scholarly journals Recent advances in the study of biocorrosion: an overview

1999 ◽  
Vol 30 (3) ◽  
pp. 117-190 ◽  
Author(s):  
Iwona B. Beech ◽  
Christine C. Gaylarde
Keyword(s):  
Extracellular Polymeric Substances ◽  
Copper Alloys ◽  
Analytical Techniques ◽  
Microbial Consortia ◽  
Force Microscopy ◽  
Sulfate Reducing ◽  
Microbially Influenced Corrosion ◽  
Atomic Force ◽  
Metabolic Activities ◽  
Anodic Reactions

Biocorrosion processes at metal surfaces are associated with microorganisms, or the products of their metabolic activities including enzymes, exopolymers, organic and inorganic acids, as well as volatile compounds such as ammonia or hydrogen sulfide. These can affect cathodic and/or anodic reactions, thus altering electrochemistry at the biofilm/metal interface. Various mechanisms of biocorrosion, reflecting the variety of physiological activities carried out by different types of microorganisms, are identified and recent insights into these mechanisms reviewed. Many modern investigations have centered on the microbially-influenced corrosion of ferrous and copper alloys and particular microorganisms of interest have been the sulfate-reducing bacteria and metal (especially manganese)-depositing bacteria. The importance of microbial consortia and the role of extracellular polymeric substances in biocorrosion are emphasized. The contribution to the study of biocorrosion of modern analytical techniques, such as atomic force microscopy, Auger electron, X-ray photoelectron and Mössbauer spectroscopy, attenuated total reflectance Fourier transform infrared spectroscopy and microsensors, is discussed.

Investigating the efficacy of Curcuma longa against Desulfovibrio desulfuricans influenced corrosion in low-carbon steel

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Akansha Sharma ◽  
Manivannan Ramachandran ◽  
Noyel Victoria Selvam
Keyword(s):  
Carbon Steel ◽  
Electrochemical Impedance ◽  
Curcuma Longa ◽  
Low Carbon Steel ◽  
Desulfovibrio Desulfuricans ◽  
Steel Corrosion ◽  
Reaction Rates ◽  
Low Carbon ◽  
Sulfate Reducing ◽  
Anodic Reactions

Abstract The effectiveness of Curcuma longa extract in the control of low-carbon steel corrosion caused by sulfate-reducing bacteria (SRB) in Baar’s medium was investigated. The SRB taken for the study was Desulfovibrio desulfuricans. Specimens in contact with the medium containing SRB exhibited a corrosion rate more than 10 times that of the specimens in contact with the medium without SRB. The weight loss studies showed that the addition of 50 ppm C. longa extracts to the medium containing SRB resulted in an average inhibition efficiency of 91.2% for a four week immersion period. The inhibitor extract altered the reaction rates of both cathodic and anodic reactions which were confirmed from the potentiodynamic polarization (PP) studies. Electrochemical impedance spectroscopy (EIS) studies showed a reduction in the number of sessile bacteria upon inhibitor addition which was confirmed by the microscopy. Severe pitting was observed in the morphological analysis of the specimen in the absence of inhibitor treatment. Apart from adsorption onto the specimen surface to minimize the biocorrosion, the inhibitor extract also served as an anti-film forming and antibacterial agent.

Physiologic studies with the sulfate-reducing bacterium Desulfovibrio desulfuricans: Evaluation for use in a biofuel cell

1996 ◽  
Vol 18 (5) ◽  
pp. 358-365 ◽  
Author(s):  
Michael J. Cooney ◽  
Edouard Roschi ◽  
Ian W. Marison ◽  
Ch. Comminellis ◽  
Urs von Stockar
Keyword(s):  
Desulfovibrio Desulfuricans ◽  
Biofuel Cell ◽  
Sulfate Reducing

scholarly journals Characterization of the cytochrome system of a nitrogen-fixing strain of a sulfate-reducing bacterium: Desulfovibrio desulfuricans strain Berre-Eau

1987 ◽  
Vol 162 (3) ◽  
pp. 547-554 ◽  
Author(s):  
Isabel MOURA ◽  
Guy FAUQUE ◽  
Jean LeGALL ◽  
Antonio V. XAVIER ◽  
Jose MOURA
Keyword(s):  
Desulfovibrio Desulfuricans ◽  
Nitrogen Fixing ◽  
Sulfate Reducing

Inhibiting mild steel corrosion from sulfate-reducing bacteria using antimicrobial-producing biofilms in Three-Mile-Island process water

2004 ◽  
Vol 64 (2) ◽  
pp. 275-283 ◽  
Author(s):  
F. B. Mansfeld ◽  
T. K. Wood ◽  
R. Zuo ◽  
D. �rnek ◽  
B. C. Syrett ◽  
...  
Keyword(s):  
Mild Steel ◽  
Steel Corrosion ◽  
Sulfate Reducing Bacteria ◽  
Process Water ◽  
Sulfate Reducing ◽  
Mild Steel Corrosion ◽  
Reducing Bacteria

scholarly journals A Study of Mild Steel Corrosion UsingAdhatoda Vasica(AV) Extract as Inhibitor in Different Acid Medium

2010 ◽  
Vol 7 (4) ◽  
pp. 1284-1289 ◽  
Author(s):  
P. Matheswaran ◽  
A. K. Ramasamy
Keyword(s):  
Weight Loss ◽  
Mild Steel ◽  
Acid Medium ◽  
Acidic Medium ◽  
Active Sites ◽  
Mixed Type ◽  
Steel Corrosion ◽  
Adhatoda Vasica ◽  
Mild Steel Corrosion ◽  
Inhibitive Action

Corrosion behavior of mild steel in acidic medium usingAdhatoda Vasica(AV) extract was investigated. The inhibitive effective ofAdhatoda Vasicaon the corrosion of mild steel in different acidic medium has been studied by weight loss and polarization methods. The Ecorrvalues are shifted slightly towards negative side in presence of inhibitors which indicate the inhibitors inhibit the corrosion of mild steel in acids solution by controlling both anodic and cathodic reactions due to the blocking of active sites on the metal surface. It is evident that inhibitors bring about considerable polarization of the cathode as well as anode. It was, therefore, inferred that the inhibitive action is of mixed type.

scholarly journals Analytical Study of Influence of pH and weight Loss on Steel Corrosion Embedded in Reinforced Concrete: A Review Paper

2016 ◽  
Vol 91 ◽  
pp. 59-70
Author(s):  
Ashutosh S. Trivedi ◽  
Sudhir Singh Bhadauria ◽  
Ravi Singh Sengar
Keyword(s):  
Weight Loss ◽  
Reinforced Concrete ◽  
Analytical Study ◽  
Review Paper ◽  
Steel Corrosion ◽  
Influence Of Ph
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