Adhesion of sulphate-reducing bacteria to steel under cathode polarization

Adhesion of different (as to their corrosion aggression) strains of sulphate-reducing bacteria to steel has been studied under cathode polarization at various potentials: -800, -900, -1000, -1200 mV. It has been established that cathode polarization differently affects the adhesion of strain of sulp...

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Bibliographic Details
Published inMikrobiolohichnyĭ zhurnal (Kiev, Ukraine : 1993) Vol. 68; no. 1; p. 54
Main Authors Purish, L M, Koptieva, Zh P, Asaulenko, L H, Kozlova, I P
Format Journal Article
LanguageUkrainian
Published Ukraine 01.01.2006
Subjects
Adhesins, Bacterial - physiology
Corrosion
Static Electricity
Steel - chemistry
Sulfur-Reducing Bacteria - physiology
Surface Properties
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Summary:Adhesion of different (as to their corrosion aggression) strains of sulphate-reducing bacteria to steel has been studied under cathode polarization at various potentials: -800, -900, -1000, -1200 mV. It has been established that cathode polarization differently affects the adhesion of strain of sulphate-reducing bacteria with various aggression to steel. Correlation between the bacterial strains aggression and the number of cells adhered to metal have been noted. The cells of aggressive strains of D. indonensis Indonesia and Desulfovibrio sp. Kiev-10 adhered to metal most actively at cathode depolarization (8.0 x 10(7) and 3.5 x 10(7) cell/cm2, respectively). Nonaggressive strains of bacteria D. desulfuricans Kiev-45 and Desulfobulbus sp. Portsmouth adhered to metal in a less quantity. The data obtained prove that the use of cathode protection without allowance for the microbe factor can lead to intensification of the corrosion process.
ISSN:1028-0987