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, Cinà P, Virtanen S, Santamaria M (2021)
Publication Type: Journal article
Publication year: 2021
Journal
Book Volume: 185
Article Number: 109430
DOI: 10.1016/j.corsci.2021.109430
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.
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APA:
Di Franco, F., Tranchida, G., Pupillo, D., Ghersi, G., Cinà, P., Virtanen, S., & Santamaria, M. (2021). Effect of E. coli biofilm formation and removal on passive films on AISI 316L during fermentation processes. Corrosion Science, 185. https://doi.org/10.1016/j.corsci.2021.109430
MLA:
Di Franco, F., et al. "Effect of E. coli biofilm formation and removal on passive films on AISI 316L during fermentation processes." Corrosion Science 185 (2021).
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