Open AccessResearch on the St3 Carbon Steel Corrosion in the Presence of Microorganisms Isolated from the Groundwater at the Yeniseyskiy Site
Author(s) -
Kirill Boldyrev,
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Alexey Safonov,
Elena Abramova,
N. A. Gladkikh,
D. V. Kryuchkov,
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Publication year - 2021
Publication title -
radioaktivnye othody
Language(s) - English
Resource type - Journals
ISSN - 2587-9707
DOI - 10.25283/2587-9707-2021-3-103-113
Subject(s) - carbon steel , corrosion , sulfate , bentonite , sulfate reducing bacteria , metallurgy , carbon fibers , materials science , microorganism , groundwater , environmental chemistry , chemistry , bacteria , composite material , geology , geotechnical engineering , composite number , paleontology
The paper presents the experimental study exploring the corrosion of carbon steel St3 samples in the presence of a microbiological community sampled at the Yeniseiskiy site and the microbiota of bentonite clays. Depending on the conditions, an average 3—30-fold increase in the corrosion rate of steel was observed due to the biogenic and biogenic-mediated processes. The maximum steel degradation effect was observed at a temperature of 50°C in the presence of sulfate ions under conditions being considered optimal for sulfate-reducing bacteria. The developed steel corrosion model was used to determine the activation energy of the aerobic and anaerobic corrosion process.