Biofilms: an approach in different industrial systems

PATRICIA GUIAMET; SANDRA GÓMEZ DE SARAVIA

Fortaleza

Congreso; INTECORR 2014; 2014

Asociación Brasilera de corrosión -ABRACO

Abiotic corrosion processes probably influence the rate, extent and distribution of colonizing microbial species, as well as the chemical compositions and physical properties of resulting biofilms. The major groups of microorganisms most frequently implicated in corrosion processes are as follows: iron and sulphur?oxidizing bacteria, anaerobic sulphate-reducing bacteria, the fungus Hormoconis resinae. Practical cases can identify a number of situations where failure by corrosion of fouling is due to the interaction of microorganisms with industrial materials and systems. The cases presented show that the phenomenon is common to a great variety of material environmental conditions and locations through the world and that there is extensive concern about the problem. The aim of this work is to show the results about biocorrosion in different industrial systems: three plants of extraction and secondary oil and steel plants. It presents a comprehensive analysis and interpretation of the problem of corrosion present in the deposits using information obtained from microbiological and physicochemical fields in order to propose strategies for diagnosis, evaluation of solutions in laboratory and field.