Electrochemical mechanisms of corrosion influenced by sulfate-reducing bacteria in aquatic systems

Peng, Ching‐Gang; Park, Jae K.

doi:10.1016/0043-1354(94)90239-9

Cited by 16 publications

(6 citation statements)

References 8 publications

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“…Therefore, it was concluded that main effects of SO 4 2concentration, CaCO 3 precipitation, bacterial inoculation, and interaction effects of CaCO 3 precipitation with SO 4 2concentration and inoculation were statistically significant. These parameters also were found to be the predominant factors affecting MIC in a laboratory polarization study 16 and in a field study in which stepwise multiple regression was used to analyze 24 water qualityrelated parameters measured at more than 40 sites in Wisconsin. 17 where ŷ is the estimated corrosion rate and x 1 , x 2 , x 3 , and x 4 take the value -1 or +1, according to the factorial design signs in Figure 1.…”

Section: Discussionmentioning

confidence: 96%

Principal Factors Affecting Microbiologically Influenced Corrosion of Carbon Steel

Peng

Park

1994

CORROSION

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Laboratory-scale batch experiments (semicontinuously fed) were conducted using a two-level factorial experimental design to investigate principal factors and interactions affecting microbiologically influenced corrosion (MIC) of carbon (C) steel. Factors considered included the C source as chemical oxygen demand (COD), sulfate (SO 4 2-) concentration, calcium carbonate (CaCO 3 ) precipitation, and bacteria inoculation at 20°C. Yates' algorithm was applied to calculate main and interaction effects, and an empirical model indicating major trends was obtained. Experimental results showed CaCO 3 precipitation played a significant role in influencing the biocorrosion tendency of steel. In the supersaturated condition, SO 4 2concentration and bacterial inoculation had no appreciable effects on corrosion. In the undersaturated condition, the corrosion rate was affected significantly by SO 4 2concentration and bacterial inoculation. The effect of each factor on corrosion rate was explored.

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Section: Discussionmentioning

confidence: 96%

Principal Factors Affecting Microbiologically Influenced Corrosion of Carbon Steel

Peng

Park

1994

CORROSION

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“…108 For example, the instantaneous corrosion rates of steel coupons immersed in an SRB-inoculated solution were 1.5 to 2.5 times greater than those in the sterile solution. 84 tors 12 -29 demonstrated that the hydrogenase of the SRB might participate in the initiation of the biocorrosion process by removing the cathodic hydrogen from steel. A significantly higher corrosion rate (7.8 mm/year) was detected in the presence of a biofilm exhibiting hydrogenase activity compared with those systems containing fewer SRB (2 x lOVcm 2 ) and no hydrogenase.…”

Section: Odor and Sewer Corrosionmentioning

confidence: 99%

Sulfate‐reducing bacteria

Hao

Chen

Huang

et al. 1996

Critical Reviews in Environmental Science and Technology

279

148

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The corrosion of sewers and the control of odor are the major operational and maintenance problems in wastewater collection systems. The generation of hydrogen sulfide and subsequent sulfuric acid results from microbially mediated reactions, by sulfate-reducing bacteria (SBR) and sulfide-oxidizing bacteria. This review covers pertinent information about sulfate reduction-induced problems in general and SBR in particular. Metabolism with respect to carbon, energy, and sulfur sources, ecology, growth factors (dissolved oxygen, temperature, pH, and sulfide), and the competitive effects of methane-producing bacteria on SBR are discussed. Because metals react with sulfide to form metal sulfide precipitates with extremely low solubilities, metal interactions in sulfate reduction environments are discussed.

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“…Reactions that consume H 2 may depolarize the cathode of metallic iron or (stainless) steel in contact with an electrolyte ( 1, 2 ): these include reduction of thiosulfate, sulfite, sulfur, fumarate, and nitrate as well as acetogenesis ( 3, 4 ). Biological corrosion by sulfate-reducing bacteria of especially metallic iron is a well-known and thoroughly studied phenomenon ( − ). Other investigators demonstrated that also methanogenic bacteria oxidized and corroded elemental iron and mild steel ( − ).…”

Section: Introductionmentioning

confidence: 99%

Influence of Denitrification on the Corrosion of Iron and Stainless Steel Powder

Kielemoes

Boever

Verstraete

2000

Environ. Sci. Technol.

115

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The purpose of this research was to address the anoxic oxidation of metallic iron and stainless steel powder by nitrate, nitrite, and anaerobic mixed cultures. In sterile batch reactors, both nitrate and nitrite (10 mg N/L) could chemically oxidize metallic iron, with a concomitant reduction to ammonium. Nitrate or nitrite reduction coupled to metal corrosion was not observed in the case of stainless steel powder. Combination of an anaerobic mixed culture and metallic iron led to (cathodically produced) H2 consumption and a complete nitrate or nitrite reduction (mainly to NH4 +). This caused a slightly enhanced metal oxidation. In the case of stainless steel, corrosion caused by denitrifying microorganisms was evidenced by data on nitrate/nitrite ions and solubilized iron. Experiments with increasing nitrite concentrations indicated that nitrite in the range of 50 mg of NO2 - -N/L inhibited the corrosion processes. Moreover, at concentrations above 140 mg NO2 - -N/L, a significant production of nitric oxide (NO) was detected. Differences between iron and stainless steel powder at low concentrations of nitrate or nitrite are most probably due to differences in kinetics: metallic iron exhibited faster chemical than biological reactions as opposed to stainless steel. It is postulated that the inhibitory effect of higher nitrite concentrations could partly be due to the chemical formation of NO and its toxic effect on the microorganisms acting at the steel surface.

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Electrochemical mechanisms of corrosion influenced by sulfate-reducing bacteria in aquatic systems

Cited by 16 publications

References 8 publications

Principal Factors Affecting Microbiologically Influenced Corrosion of Carbon Steel

Principal Factors Affecting Microbiologically Influenced Corrosion of Carbon Steel

Sulfate‐reducing bacteria

Influence of Denitrification on the Corrosion of Iron and Stainless Steel Powder

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