The Role of Manganese-Oxidizing and -Reducing Bacteria in Corrosion Processes
Manganese-oxidizing and manganese-reducing bacteria (MOB and MRB) play critical roles in corrosion processes, particularly in water systems and industrial environments where manganese is present. These microorganisms influence corrosion through biofilm formation, redox cycling, and the deposition of manganese oxides, which create local conditions conducive to corrosion. This article examines the mechanisms by which MOB and […]
Comparative Assessment of qPCR, ATP, and Bactiquant Technologies for Microbial Growth Monitoring in Oilfield Waters
Microbial growth in oilfield waters contributes to biofouling and microbiologically influenced corrosion (MIC), necessitating effective monitoring techniques. This study provides a comparative assessment of three microbial detection methods—quantitative polymerase chain reaction (qPCR), adenosine triphosphate (ATP) assay, and Bactiquant—each employed to monitor microbial growth and activity in oilfield water systems. We explore their respective capabilities, limitations, […]
Comparison of qPCR, ATP assay, and Bactiquant for detecting microbial growth in oilfield waters
1. Adenosine Triphosphate (ATP) Assay: The ATP assay measures total microbial biomass by detecting ATP, the energy carrier molecule in all living cells. The ATP levels correlate with microbial activity, thus offering a rapid estimate of microbial presence. This method is widely used in the oilfield industry due to its rapid response and simplicity, particularly […]
Sulfate-Reducing Bacteria (SRB) Associated with Corrosion
Here is a list of key sulfate-reducing bacteria (SRB) and sulfate-reducing archaea (SRA) that are associated with corrosion, particularly in environments such as pipelines, marine structures, and wastewater systems. These microorganisms contribute to corrosion through the production of hydrogen sulfide (H₂S), which reacts with metals to form metal sulfides, leading to material degradation. Sulfate-Reducing Bacteria […]
Sulfur-Oxidizing Bacteria Associated with Corrosion
Thiobacillus spp. Thiobacillus thiooxidans: Acidophilic, chemolithoautotrophic, and efficient in oxidizing elemental sulfur and sulfide to sulfuric acid, especially in acidic environments. Thiobacillus ferrooxidans (now reclassified as Acidithiobacillus ferrooxidans): Known for its role in sulfur and iron oxidation; common in mining environments where it drives bioleaching and accelerates corrosion. Acidithiobacillus spp. Acidithiobacillus thiooxidans: Capable of oxidizing […]
The Role of Sulfur-Oxidizing Bacteria in Corrosion Processes and the Application of qPCR for Characterization
Sulfur-oxidizing bacteria (SOB) are key contributors to microbiologically influenced corrosion (MIC), particularly in acidic environments such as those associated with acid mine drainage (AMD) and black shale deposits. SOB accelerate corrosion through their metabolic conversion of sulfur compounds into sulfuric acid, leading to severe degradation of both metal and concrete structures. This article reviews the […]
Intertidal Corrosion on Sheet Piles and the Role of Microbiological Measurement via qPCR
Steel corrosion in intertidal zones represents a significant challenge in marine engineering. This phenomenon, often exacerbated by microbially influenced corrosion (MIC), involves complex biochemical reactions that rapidly degrade structural integrity in marine environments. Measuring microbial activity, particularly through quantitative polymerase chain reaction (qPCR), provides insight into the extent and mechanisms of microbial involvement in corrosion. […]
