2022
DOI: 10.1016/j.watres.2022.118553
|View full text |Cite
|
Sign up to set email alerts
|

Direct microbial electron uptake as a mechanism for stainless steel corrosion in aerobic environments

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
1
1
1
1

Citation Types

1
38
0

Year Published

2022
2022
2024
2024

Publication Types

Select...
8
1

Relationship

4
5

Authors

Journals

citations
Cited by 99 publications
(39 citation statements)
references
References 74 publications
(98 reference statements)
1
38
0
Order By: Relevance
“…The EIS results further reveal that, in the PHS-Q-inoculated medium, a layer of the protective film formed on the Q235 coupon surface, which decreased the uniform corrosion rate of metals. Combined with the results of IFM, under the protective film, groups of pits were distributed randomly on the metal surface, which is consistent with typically observed MIC pitting [ 27 ]. The deepest pit in the middle of the pit group reached 5.5 μm.…”
Section: Discussionsupporting
confidence: 86%
“…The EIS results further reveal that, in the PHS-Q-inoculated medium, a layer of the protective film formed on the Q235 coupon surface, which decreased the uniform corrosion rate of metals. Combined with the results of IFM, under the protective film, groups of pits were distributed randomly on the metal surface, which is consistent with typically observed MIC pitting [ 27 ]. The deepest pit in the middle of the pit group reached 5.5 μm.…”
Section: Discussionsupporting
confidence: 86%
“…The inability of the hydrogenase mutant to reduce sulfate with Fe 0 as the electron donor contrasts with electroactive microbes such as Geobacter sulfurreducens (15) or Shewanella oneidensis (18), which continue to utilize Fe 0 as an electron donor even after gene deletions have eliminated the capability for H 2 uptake. Both G. sulfurreducens and S. oneidensis are capable of direct electron uptake as evidenced from an inhibition of Fe 0 -based respiration when genes for key outer-surface c -type cytochromes are deleted (15, 17, 18). Thus, the lack of sulfate reduction by the D. vulgaris hydrogenase mutant suggests that it is unlikely to support sulfate reduction with direct electron uptake from Fe 0 .…”
Section: Resultsmentioning
confidence: 99%
“…Direct Fe 0 -to-microbe electron transfer for D. vulgaris has also been proposed (14). Studies with Geobacter (15, 16), Shewanella (17, 18), and Methanosarcina (19) species have provided evidence for direct electron uptake from Fe 0 by: 1) eliminating the possibility that H 2 was serving as an electron shuttle between Fe 0 and cells; and 2) demonstrating with gene deletions that outer-surface c -type cytochromes were required for electron uptake from Fe 0 . In contrast, no studies have previously reported on D. vulgaris corrosion with strains that were unable to use H 2 (7).…”
Section: Introductionmentioning
confidence: 99%
“…Cao et al used a global proteomic approach and identified a total of 58 extracellular and outer membrane proteins in the EPS [ 80 ]. Twenty redox proteins were found in extracted EPS, such as c -type cytochromes, Mtr C, and Omc A, which have been implicated to participate in extracellular electron transfer [ 80 , 138 ]. The use of fluorescent markers such as lectins and CLSM can realize the visual and in situ analysis of EPS [ 103 , 139 ].…”
Section: Perspective and Future Directionsmentioning
confidence: 99%