Research output: Contribution to journal › Article › peer-review
The Corrosive Activity of Microorganisms Isolated from Fouling of Structural Materials in the Coastal Zone of the Barents Sea. / Власов, Дмитрий Юрьевич; Брюханов, А. Л.; Няникова, Галина; Зеленская, Марина Станиславовна; Царовцева, И.М.; Изатулина, Алина Ростамовна.
In: Applied Biochemistry and Microbiology, Vol. 59, No. 4, 01.08.2023, p. 425-437.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - The Corrosive Activity of Microorganisms Isolated from Fouling of Structural Materials in the Coastal Zone of the Barents Sea
AU - Власов, Дмитрий Юрьевич
AU - Брюханов, А. Л.
AU - Няникова, Галина
AU - Зеленская, Марина Станиславовна
AU - Царовцева, И.М.
AU - Изатулина, Алина Ростамовна
PY - 2023/8/1
Y1 - 2023/8/1
N2 - Potentially corrosion-active microorganisms isolated from structural materials with the signs of biofouling on the coast of Kislaya Bay (Barents Sea, Russia) were studied: sulfate-reducing, iron-oxidizing and sulfur-oxidizing bacteria. The cultures of sulfate-reducing bacteria (Desulfovibrio sp., Halodesulfovibrio sp.), sulfur-oxidizing bacteria (Dietzia sp.), and iron-oxidizing bacteria (Pseudomonas fluorescens, Bacillus sp.) were identified on the basis of determining the nucleotide sequences of the 16S rRNA gene. The methods of scanning electron microscopy, energy dispersive microanalysis of the chemical composition, and powder X-ray diffraction analysis revealed significant changes in the structure and chemical composition of the surface layer of steel reinforcement samples exposed for 28 days in the presence of isolated microorganisms that demonstrated their active participation in corrosion processes. It has been shown that the formation of mineral analogues in corrosion products depends on the strains of studied bacteria and the peculiarities of their metabolism. Sulfate-reducing bacteria isolated from the littoral zone of the Barents Sea showed the highest activity in the development of corrosion processes.
AB - Potentially corrosion-active microorganisms isolated from structural materials with the signs of biofouling on the coast of Kislaya Bay (Barents Sea, Russia) were studied: sulfate-reducing, iron-oxidizing and sulfur-oxidizing bacteria. The cultures of sulfate-reducing bacteria (Desulfovibrio sp., Halodesulfovibrio sp.), sulfur-oxidizing bacteria (Dietzia sp.), and iron-oxidizing bacteria (Pseudomonas fluorescens, Bacillus sp.) were identified on the basis of determining the nucleotide sequences of the 16S rRNA gene. The methods of scanning electron microscopy, energy dispersive microanalysis of the chemical composition, and powder X-ray diffraction analysis revealed significant changes in the structure and chemical composition of the surface layer of steel reinforcement samples exposed for 28 days in the presence of isolated microorganisms that demonstrated their active participation in corrosion processes. It has been shown that the formation of mineral analogues in corrosion products depends on the strains of studied bacteria and the peculiarities of their metabolism. Sulfate-reducing bacteria isolated from the littoral zone of the Barents Sea showed the highest activity in the development of corrosion processes.
KW - Barents Sea
KW - biocorrosion
KW - iron bacteria
KW - powder X-ray diffraction analysis
KW - scanning electron microscopy (SEM)
KW - structural materials
KW - sulfate-reducing bacteria (SRB)
KW - sulfur-oxidizing bacteria
UR - https://www.mendeley.com/catalogue/e6d80e2f-ee99-345e-99f0-5816d6f1e649/
U2 - 10.1134/s0003683823040166
DO - 10.1134/s0003683823040166
M3 - Article
VL - 59
SP - 425
EP - 437
JO - Applied Biochemistry and Microbiology
JF - Applied Biochemistry and Microbiology
SN - 0003-6838
IS - 4
ER -
ID: 113438426