What chemicals are produced by bacterial organisms that can accelerate corrosion?

Bacterial organisms can produce specific chemicals as metabolic byproducts that have the potential to accelerate corrosion in various environments, particularly in water systems. In this context, carbon dioxide and hydrogen sulfide are the key contributors.

Carbon dioxide, when dissolved in water, forms carbonic acid, which can lower the pH of the water and contribute to increased corrosion rates of metallic surfaces. A lower pH means a more acidic environment, which can lead to the deterioration of metals over time due to the increased solubility of metal ions.

Hydrogen sulfide, on the other hand, is particularly notorious for causing corrosion, especially in wastewater systems. It can react with metals, especially iron, to form iron sulfides, which can lead to localized corrosion and damage to structural elements within water infrastructure.

The combination of these two chemicals makes them particularly significant in terms of microbial-induced corrosion, which is a crucial consideration for water operators aiming to maintain the integrity of their systems.