Which bacteria type is known to accelerate corrosion of metal pipes in clay environments?

The type of bacteria known to accelerate corrosion of metal pipes in clay environments is Sulfate-Reducing Bacteria (SRB). These bacteria thrive in anaerobic conditions, which are often present in clay soils where oxygen levels are low. SRBs contribute to corrosion through their metabolic processes, which involve reducing sulfate compounds to sulfide. The production of hydrogen sulfide can lead to localized corrosion, such as pitting, on metal surfaces. Additionally, the presence of SRBs can create an acidic environment, further enhancing the corrosion process. Understanding the role of SRBs in the corrosion process is vital for implementing effective cathodic protection measures and managing corrosion risks in buried pipe systems.