Responses of soil microbiome to steel corrosion

Abstract

The process of microbiologically influenced corrosion (MIC) in soils has received widespread attention. Herein, long-term outdoor soil burial experiments were conducted to elucidate the community composition and functional interaction of soil microorganisms associated with metal corrosion. The results indicated that iron-oxidizing (e.g., Gallionella), nitrifying (e.g., Nitrospira), and denitrifying (e.g., Hydrogenophaga) microorganisms were significantly enriched in response to metal corrosion and were positively correlated with the metal mass loss. Corrosion process may promote the preferential growth of the abundant microbes. The functional annotation revealed that the metabolic processes of nitrogen cycling and electron transfer pathways were strengthened, and also that the corrosion of metals in soil was closely associated with the biogeochemical cycling of iron and nitrogen elements and extracellular electron transfer. Niche disturbance of microbial communities induced by the buried metals facilitated the synergetic effect of the major MIC participants. The co-occurrence network analysis suggested possible niche correlations among corrosion related bioindicators.

Identification of Microbiological Activities in Wet Flue Gas Desulfurization Systems

“…In all of these scenarios, microbial communities might be subjected to changes in their physicochemical setting as water and suspended solids move through thermoelectric power generation station process points, thus forcing shifts in microbial communities, and potentially, activities. From the perspective of the microorganisms detected in the wFGDs in the current work, the abundant Hydrogenophilus, Hydrogenophaga , and Gallionella , which were abundant in Units S and M, could induce corrosion ( Rajala et al, 2015 ; Huang et al, 2021 ). Additionally, active organisms in Unit P, including Ralstonia / Cupriavidus spp.…”

Effect of Cu addition to low-alloy structural steel on the resistance against corrosion by the Pseudomonas aeruginosa biofilm

“…It is well accepted that biofilms are responsible for MIC (Huang et al , 2021). Therefore, inhibiting biofilms is an effective way to suppress MIC (Zhou et al , 2020).…”

Corrosion behavior and mechanism of X80 steel in silty soil under the combined effect of salt and temperature

“…As a result, the direct contact between the steel surface and the erosive soil environment is regarded as a signicant cause of its corrosion failure. 9,13 Previously, extensive research efforts have been devoted to the study on the electrochemical corrosion reaction at the soil-steel interface, [14][15][16][17] and a more mature theory has been established. Most of the reactions correspond to oxygen-depolarized corrosion.…”