Microbiologically influenced corrosion of 304 stainless steel by nitrate reducing Bacillus cereus in simulated Beijing soil solution.
Microbiologically influenced corrosion
Nitrate-reducing bacterium
Soil corrosion
Stainless steel
Journal
Bioelectrochemistry (Amsterdam, Netherlands)
ISSN: 1878-562X
Titre abrégé: Bioelectrochemistry
Pays: Netherlands
ID NLM: 100953583
Informations de publication
Date de publication:
Jun 2020
Jun 2020
Historique:
received:
02
04
2019
revised:
27
01
2020
accepted:
29
01
2020
pubmed:
9
2
2020
medline:
16
12
2020
entrez:
9
2
2020
Statut:
ppublish
Résumé
In this work, microbiologically influenced corrosion (MIC) of 304 stainless steel (SS) caused by Bacillus cereus was investigated by electrochemical measurements and surface analyses in simulated Beijing soil solution under aerobic condition. The nitrate-reducing bacterium (NRB), B. cereus, was isolated from Beijing soil and identified using 16S rDNA. Confocal laser scanning microscopy (CLSM) images showed that the largest pit depths on 304 SS with and without B. cereus after 14 days of incubation were 7.17 and 4.59 μm, respectively, indicating that pitting corrosion was accelerated by B. cereus. X-ray photoelectron spectroscopy (XPS) and energy dispersive spectrometry (EDS) results revealed that B. cereus and its metabolic products were detrimental to the integrity of the passive film on 304 SS. The electrochemical results showed that B. cereus significantly reduced the corrosion resistance of 304 SS and accelerated the anodic dissolution reaction, thereby speeding up the corrosion process.
Identifiants
pubmed: 32035394
pii: S1567-5394(19)30227-0
doi: 10.1016/j.bioelechem.2020.107477
pii:
doi:
Substances chimiques
Nitrates
0
Soil
0
Stainless Steel
12597-68-1
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
107477Informations de copyright
Copyright © 2020 Elsevier B.V. All rights reserved.
Déclaration de conflit d'intérêts
Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.