TY - JOUR
T1 - Evaluation of a biocide effect upon microbiologically influenced corrosion of mild steel
AU - Gayosso, M. J.Hernández
AU - Olivares, G. Zavala
AU - Ordaz, N. Ruiz
AU - Esquivel, R. Garcia
PY - 2005/9
Y1 - 2005/9
N2 - The microbiologically influenced corrosion (MIC) is a very dangerous process, which affects the oil industry. The activity and microorganisms' growth at the pipelines steel cause surface modifications, which can induce a more complex corrosion process. The biocide evaluation for the MIC decrease has been normally based upon microbiological tests, and just a few references mention alternating methods which can be used as criteria for their evaluation. In this work, a commercial biocide was tested, using different electrochemical laboratory techniques, to determine its effect upon a biofilm generating bacteria consortium. Using microbiological techniques, the biocide lethal concentration was determined, and a concentration of 200 ppm was used to kill completely the consortium population in both, plancktonic and sessile parts. The electrochemical techniques: Polarisation Resistance (PR) and Electrochemical Impedance Spectroscopy (EIS), allowed describing the corrosion process associated to the microbial consortium and the biocide effect upon it.
AB - The microbiologically influenced corrosion (MIC) is a very dangerous process, which affects the oil industry. The activity and microorganisms' growth at the pipelines steel cause surface modifications, which can induce a more complex corrosion process. The biocide evaluation for the MIC decrease has been normally based upon microbiological tests, and just a few references mention alternating methods which can be used as criteria for their evaluation. In this work, a commercial biocide was tested, using different electrochemical laboratory techniques, to determine its effect upon a biofilm generating bacteria consortium. Using microbiological techniques, the biocide lethal concentration was determined, and a concentration of 200 ppm was used to kill completely the consortium population in both, plancktonic and sessile parts. The electrochemical techniques: Polarisation Resistance (PR) and Electrochemical Impedance Spectroscopy (EIS), allowed describing the corrosion process associated to the microbial consortium and the biocide effect upon it.
UR - http://www.scopus.com/inward/record.url?scp=25144496139&partnerID=8YFLogxK
U2 - 10.1002/maco.200503867
DO - 10.1002/maco.200503867
M3 - Artículo
SN - 0947-5117
VL - 56
SP - 624
EP - 629
JO - Materials and Corrosion
JF - Materials and Corrosion
IS - 9
ER -