Effect of different bacterial strains on corrosion of carbon steel

Experiments were conducted to study the effect of individual bacterial isol ates and their combinations on the corrosion of carbon steel. Observations were made on corrosion rates, changes in pH and the type of corrosion in ea ch case. Results show that in the presence of strain FBI, corrosion rates w ere higher as compared to the other strains indicating that individual stra ins responded differently with regard to the corrosion of carbon steel. The pH of the media decreased in all the cultures and the one associated with maximum corrosion rate had the lowest pH. Fitting corrosion was observed in coupons exposed to medium containing strain FBI.