Interaction of Desulfovibrio desulfuricans biofilms with stainless steel surface and its impact on bacterial metabolism

Abstract

Aims: To study the influence of some metallic elements of stainless steel 304 (SS 304) on the development and activity of a sulfate‐reducing bacterial biofilm, using as comparison a reference nonmetallic material polymethylmethacrylate (PMMA). Methods and Results: Desulfovibrio desulfuricans biofilms were developed on SS 304 and on a reference nonmetallic material, PMMA, in a flow cell system. Steady‐state biofilms were metabolically more active on SS 304 than on PMMA. Activity tests with bacteria from both biofilms at steady state also showed that the doubling time was lower for bacteria from SS 304 biofilms. The influence of chromium and nickel, elements of SS 304 composition, was also tested on a cellular suspension of Des. desulfuricans. Nickel decreased the bacterial doubling time, while chromium had no significant effect. Conclusions: The following mechanism is hypothesized: a Des. desulfuricans biofilm grown on a SS 304 surface in anaerobic conditions leads to the weakening of the metal passive layer and to the dissolution in the bulk phase of nickel ions that have a positive influence on the sulfate‐reducing bacteria metabolism. This phenomenon may enhance the biocorrosion process. Significance and Impact of the Study: A better understanding of the interactions between metallic surfaces such as stainless steel and bacteria commonly implied in the corrosion phenomena which is primordial to fight biocorrosion.

Biocorrosion of Endodontic Files through the Action of Two Species of Sulfate-reducing Bacteria: Desulfovibrio desulfuricans and Desulfovibrio fairfieldensis

“…28,30 However, similarly to that observed in the current study, it appears that AISI 304 steel is not resistant to biocorrosion and areas of corrosion can form through the action of SRB.…”

“…[25][26][27][28][29] However, until now, no study has estimated the biocorrosive capacity of SRB on endodontic files. The present study estimates the Can a fractured endodontic file fragment within the root canal be removed by the biocorrosive capacity of SRB?…”

Biofilms in water, its role and impact in human disease transmission

“…Biofilms in seawater similarly can involve chromium, nickel, and molybdenum, used as alloying elements to resist corrosion of stainless steel bodies of marine vessels. Biofilms on those surfaces, however, do become corroded over time [6].…”

Biocorrosion on Surface of ASTM A283 Carbon Steel, Exposed in Diesel S10 and Tap Water

“…Lopes et al 21 reported that microorganism-induced corrosion in fuel storage tanks occurred due to the presence of water, which is a medium in which bacteria are present and abundant. To this extent, bacteria can migrate from one fluid to another, i.e., they can contaminate the diesel through the bacteria present in the water.…”