Microbiologically influenced corrosion and community dynamics of oil-well produced water at different temperatures

Physics of Fluids, Journal Year: 2025, Volume and Issue: 37(1)

Published: Jan. 1, 2025

Microbiologically influenced corrosion (MIC) is a universal issue of significant concern in the petroleum industry, with potential for enormous economic losses and casualties. This study focused on effect temperature MIC mechanism. The rate, morphology, products, microbial community composition produced fluid samples from Zhanjiang oilfield were measured after anaerobic culture at 30 60 °C 14 days. rate Z1 Z2 decreased increasing temperature, while Z3 sample changed light to heavy corrosion. was dominated by pitting corrosion, had relatively smooth surface, observed have one dimensional wormhole °C. 16S ribosomal deoxyribonucleic acid (rDNA) sequence showed that bacterial communities Pseudomonas Bacillus, archaeal mainly composed Methanothermobacter, Methanosaeta, Candidatus Nitrosotenuis, which prevalent It suggested could be caused extracellular electron transfer reduction nitrate or nitrite N2 NH4+ bacteria, utilization CO2 produce CH4 archaea. Overall, results this can provide comprehensive data new insights into management strategies oil fields.

Language: Английский

---

Collaborative or competitive interactions between bacteria and methanogens on the biocorrosion of Q235A steel

Environmental Research, Journal Year: 2025, Volume and Issue: 268, P. 120826 - 120826

Published: Jan. 10, 2025

Language: Английский

---

Promoting effects and mechanisms of common iron oxides on corrosion of carbon steel induced by methanogenic microbiota

Journal of environmental chemical engineering, Journal Year: 2025, Volume and Issue: unknown, P. 115769 - 115769

Published: Feb. 1, 2025

Language: Английский

---

Anaerobic corrosion of steel wire by Geoalkalibacter ferrihydriticus under alkaline autotrophic conditions

Applied and Environmental Microbiology, Journal Year: 2025, Volume and Issue: unknown

Published: March 10, 2025

ABSTRACT Microbially induced corrosion (MIC), caused by iron-cycling microorganisms that directly uptake electrons from metallic iron, is a serious economic and environmental problem. Iron inhibited at pH above 9.0 in the presence of carbonate formation passivating film, but possibility direct oxidation iron anaerobic alkaliphiles has not been thoroughly investigated. This bioinduced process may pose hazard under alkaline conditions underground radioactive waste disposal metal containers with bentonite clays. We used Geoalkalibacter ferrihydriticus , an bacterium capable both dissimilatory reduction oxidation, as model organism to investigate microbial ability utilize Fe 0 steel wire electron donor autotrophic 9.5. During bacterial growth, was accompanied intense H 2 production precipitation solid phase. Mössbauer spectroscopy revealed green rust siderite admixture major mineral formed during oxidation. Protons appeared be only thermodynamically favorable acceptor for G. . Their could lead hydrogen production. Genomic analysis supported proposal such metabolic mode organism. Thus, we have shown MIC can realized absence organic substrates. Microbial facilitate further development authigenic microflora, which increase repositories reduce barrier properties IMPORTANCE (MIC) problem significant damage. processes occurring neutral actively studied over last decades. Meanwhile, remain very poorly understood, although they represent problem, are characteristic geological nuclear stored isolated Our studies 9.5 any matter this possible active release hydrogen. The gas trigger microflora uses it negatively affect insulating clay through activity.

Language: Английский

---

Mechanistic investigation of ferric ion and ferriferous oxide on M. barkeri-mediated copper corrosion

Journal of Water Process Engineering, Journal Year: 2024, Volume and Issue: 68, P. 106395 - 106395

Published: Oct. 24, 2024

Language: Английский

---