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An analysis of a culturable corrosive bacterial community in water samples from a cooling tower was performed using traditional cultivation techniques and its identification based on 16S rRNA gene sequence. Seven aerobic bacterial species were identified:  Pseudomonas putida  ARTYP1,  Pseudomonas aeruginosa  ARTYP2,  Massilia timonae  ARTYP3,  Massilia albidiflava  ARTYP4,  Pseudomonas mosselii  ARTYP5,  Massilia  sp. ARTYP6, and  Pseudomonas  sp. ARTYP7. Although some of these species have commonly been observed and reported in biocorrosion studies, the genus  Massilia  is identified for the first time in water from a cooling tower. The biocorrosion behaviour of copper metal by the new species  Massilia timonae  ARTYP3 was selected for further investigation using a weight loss method, as well as electrochemical and surface analysis techniques (SEM, AFM, and FTIR).  In contrast with an uninoculated system, thin bacterial biofilms and pitting corrosion were observed on the copper metal surface in the presence of  M. timonae . The use of a biocide, bronopol, inhibited the formation of biofilm and pitting corrosion on the copper metal surface.

Characterization of Corrosive Bacterial Consortia Isolated from Water in a Cooling Tower