chapter  6
42 Pages

Detection, Identification, and Monitoring

WithHéctor A. Videla

Biocorrosion and abiotic corrosion have a common feature: the electrochemical nature of the process. For instance, if large numbers of microorganisms are detected at the corrosion site, it will help to prove biocorrosion. The problem to solve in biocorrosion detection is to certify the biological origin of the metal failure. In addition to the inspection and examination of the corrosion site and the biological and inorganic deposits in the surrounding areas, it is equally important to consider several characteristics of the environment near to corrosion failure. The serological techniques used for identifying and classifying corrosion-related microorganisms including agglutination, immunodiffusion, and immunofluorescence have given contradictory results. An Adenosine triphosphate rapid bioassay field test was used to identify cooling water biofilms and to control them with the use of biodispersants. The X-ray photoelectron spectroscopy has been applied in sulfate-reducing bacteria biocorrosion to characterize the interaction of metal ions and biofilms.