316L coupons were sanitized in hot water vapour inducing iron enrichment in passive films. Coupons were then immersed in a pilot fed-batch fermenter in presence of E. coli. Sanitization causes iron enrichment in passive films. Fermentation causes the growth of biofilm on the SS, constituted by bacteria embedded in an extracellular polymeric substance. During fermentation SS open circuit potential is very negative due to low oxygen concentration on its surface, while the chelating action of siderophores induces chromium enrichment in the passive film. Disinfection in NaClO for 30 min allows removal of biofilm and formation of a protective passive film.
Di Franco F., Tranchida G., Pupillo D., Ghersi G., Cina P., Virtanen S., et al. (2021). Effect of E. coli biofilm formation and removal on passive films on AISI 316L during fermentation processes. CORROSION SCIENCE, 185 [10.1016/j.corsci.2021.109430].
Effect of E. coli biofilm formation and removal on passive films on AISI 316L during fermentation processes
Di Franco F.;Tranchida G.;Pupillo D.;Ghersi G.;Santamaria M.
2021-01-01
Abstract
316L coupons were sanitized in hot water vapour inducing iron enrichment in passive films. Coupons were then immersed in a pilot fed-batch fermenter in presence of E. coli. Sanitization causes iron enrichment in passive films. Fermentation causes the growth of biofilm on the SS, constituted by bacteria embedded in an extracellular polymeric substance. During fermentation SS open circuit potential is very negative due to low oxygen concentration on its surface, while the chelating action of siderophores induces chromium enrichment in the passive film. Disinfection in NaClO for 30 min allows removal of biofilm and formation of a protective passive film.
| File | Dimensione | Formato | |
|---|---|---|---|
|
2021_Corr Sci_Corrosion Fermenter.pdf
Solo gestori archvio
Tipologia:
Versione Editoriale
Dimensione
5.59 MB
Formato
Adobe PDF
|
5.59 MB | Adobe PDF | Visualizza/Apri Richiedi una copia |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
