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Questions and Answers
Which microorganism is known to produce sulfuric acid?
Which microorganism is known to produce sulfuric acid?
- Ferrobacillus ferrooxidans
- Desulfovibrio salixigens
- Desulfotomaculum
- Acidithiobacillus bacteria (correct)
Which bacteria directly oxidizes iron to iron oxides and iron hydroxides?
Which bacteria directly oxidizes iron to iron oxides and iron hydroxides?
- Desulfovibrio
- Desulfotomaculum
- Ferrobacillus ferrooxidans (correct)
- Acidothiobacillus thiooxidans
Which bacteria is commonly associated with the formation of rusticles on the RMS Titanic wreck?
Which bacteria is commonly associated with the formation of rusticles on the RMS Titanic wreck?
- Desulfovibrio
- Ferrobacillus ferrooxidans (correct)
- Acidithiobacillus thiooxidans
- Desulfotomaculum
Which bacteria is known to require at least 2.5% concentration of sodium chloride?
Which bacteria is known to require at least 2.5% concentration of sodium chloride?
Which type of bacteria is common in the absence of oxygen and can grow in both fresh and salt water?
Which type of bacteria is common in the absence of oxygen and can grow in both fresh and salt water?
Which type of bacteria is common in the absence of oxygen and is associated with biogenic sulfide corrosion?
Which type of bacteria is common in the absence of oxygen and is associated with biogenic sulfide corrosion?
Which bacteria is known to produce ammonia and can contribute to microbiologically influenced corrosion?
Which bacteria is known to produce ammonia and can contribute to microbiologically influenced corrosion?
Which bacteria directly oxidizes iron to iron oxides and iron hydroxides, causing the formation of rusticles?
Which bacteria directly oxidizes iron to iron oxides and iron hydroxides, causing the formation of rusticles?
Which microorganism is commonly associated with the production of sulfuric acid, contributing to corrosion of sewer pipes?
Which microorganism is commonly associated with the production of sulfuric acid, contributing to corrosion of sewer pipes?
Which bacteria is commonly found in the presence of oxygen and is a common corrosion-causing factor resulting in biogenic sulfide corrosion?
Which bacteria is commonly found in the presence of oxygen and is a common corrosion-causing factor resulting in biogenic sulfide corrosion?
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Study Notes
Microorganisms and Their Roles in Corrosion
- Acidophilic Bacteria: Known to produce sulfuric acid, contributing to corrosion in various environments.
- Iron-Oxidizing Bacteria: Directly oxidize iron, leading to the formation of iron oxides and iron hydroxides, crucial in rust formation.
- Rusticles Formation: Specific bacteria associated with the development of rusticles found on the RMS Titanic wreck, playing a role in the degradation processes.
Halophilic Bacteria
- High Salt Requirement: Certain bacteria require at least 2.5% sodium chloride concentration for their growth, adapting to saline environments.
Anaerobic Bacteria
- Presence in Oxygen-Limited Environments: Commonly found in both freshwater and saltwater environments, capable of thriving without oxygen.
- Biogenic Sulfide Corrosion: Associated with anaerobic processes and the formation of biogenic sulfide, a significant factor in corrosion mechanisms.
Microbiologically Influenced Corrosion (MIC)
- Ammonia-Producing Bacteria: These bacteria produce ammonia, contributing to microbiologically influenced corrosion in various materials.
- Corrosive Bacteria in Oxygen-Present Environments: Commonly found in the presence of oxygen, contributing to biogenic sulfide corrosion and affecting infrastructure integrity.
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