Electrochemical interactions of biofilms with metal surfaces

1997 ◽  
Vol 36 (1) ◽  
pp. 295-302 ◽  
Author(s):  
Zbigniew Lewandowski ◽  
Wayne Dickinson ◽  
Whonchee Lee
Keyword(s):  
Manganese Oxides ◽  
Inorganic Materials ◽  
Iron Sulfides ◽  
Accelerated Corrosion ◽  
Sulfate Reducing ◽  
Microbially Influenced Corrosion ◽  
Solution Interface ◽  
Surface Iron ◽  
Electrochemically Active ◽  
Reducing Bacteria

Two mechanisms of microbially influenced corrosion (MIC) are discussed and compared: corrosion modified by the presence of (1) sulfate-reducing bacteria (SRB) and (2) manganese-oxidizing bacteria (MOB). It is demonstrated that the nature of MIC in both cases depends on the nature of inorganic materials precipitated at the metal surface, iron sulfides and manganese oxides. Those materials are electrochemically active and, therefore, modify the electrochemical processes naturally occurring at the metal-solution interface. Some of these modifications may lead to accelerated corrosion.

Corrosion Behavior of Low Nickel Alloy High Strength Steel in Seawater Containing Sulfate-Reducing Bacteria

2011 ◽  
Vol 368-373 ◽  
pp. 42-47
Author(s):  
Fu Shao Li ◽  
Mao Zhong An ◽  
Dong Xia Duan
Keyword(s):  
Nickel Alloy ◽  
High Strength Steel ◽  
Culture Medium ◽  
Electrochemical Impedance ◽  
High Strength ◽  
Sulfate Reducing Bacteria ◽  
Iron Sulfides ◽  
Active Dissolution ◽  
Sulfate Reducing ◽  
Reducing Bacteria

Corrosion behaviors of low nickel alloy high strength steel (LNAHSS) was studied by electrochemical impedance spectroscopy and scanning electron microscopy when the coupons of LNAHSS were exposed to the seawater culture media. As the results, LNAHSS was uniformly corroded in the fresh sterilized culture medium in a mode of active dissolution; in the culture medium with sulfate-reducing bacteria (SRB), LNAHSS was protected by the iron sulfides layer to some extent in the early stage of exposure, but severely localized corrosion subsequently occurred resulting from the localized breakdown of iron sulfides layer. So, in risks estimation, special precautions should be taken when LNAHSS serves in the environments containing SRB as the localized area can become the tress raiser.

scholarly journals Damming Induced Natural Attenuation of Hydrothermal Waters by Runoff Freshwater Dilution and Sediment Biogeochemical Transformations (Sochagota Lake, Colombia)

Water ◽  
2021 ◽  
Vol 13 (23) ◽  
pp. 3445
Author(s):  
Gabriel Ricardo Cifuentes ◽  
Rosario Jiménez-Espinosa ◽  
Claudia Patricia Quevedo ◽  
Juan Jiménez-Millán
Keyword(s):  
Natural Attenuation ◽  
Volcanic Area ◽  
Iron Sulfides ◽  
Sulfate Reducing ◽  
High Concentrations ◽  
Biogeochemical Transformations ◽  
Reducing Bacteria ◽  
The Impact ◽  
Basin Area ◽  
Mixed Water

The volcanic area of the Paipa system (Boyacá, Colombia) contains a magmatic heat source and deep fractures that help the flow of hot and highly mineralized waters, which are further combined with cold superficial inputs. This mixed water recharges the Salitre River and downstream feeding Sochagota Lake. The incoming water can contribute to substantial increases in hydrothermal SO42−-Na water in the water of the Salitre River basin area, raising the salinity. An additional hydrogeochemical process occurs in the mix with cold Fe-rich water from alluvial and surficial aquifers. This salinized Fe-rich water feeds the Sochagota Lake, although the impact of freshwaters from rain on the hydrochemistry of the Sochagota Lake is significant. A series of hydrogeochemical, biogeochemical, and mineralogical processes occur inside the lake. The aim of this work was to study the influence of damming in the Sochagota Lake, which acts as a natural attenuation of contaminants such as high concentrations of metals and salty elements coming from the Salitre River. Damming in the Sochagota Lake is considered to be an effective strategy for attenuating highly mineralized waters. The concentrations of dissolved elements were attenuated significantly. Dilution by rainfall runoff and precipitation of iron sulfides mediated by sulfate-reducing bacteria in deposits rich in organic material were the main processes involved in the attenuation of concentrations of SO42−, Fe, As Cu, and Co in the lake water. Furthermore, the K-consuming illitization processes occurring in the sediments could favor the decrease in K and Al.

scholarly journals Deposition of Biogenic Iron Minerals in a Methane Oxidizing Microbial Mat

Archaea ◽  
2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Christoph Wrede ◽  
Sebastian Kokoschka ◽  
Anne Dreier ◽  
Christina Heller ◽  
Joachim Reitner ◽  
...  
Keyword(s):  
Microbial Mats ◽  
Sulfate Reducing Bacteria ◽  
Microbial Reduction ◽  
Microbial Mat ◽  
The Black Sea ◽  
Anaerobic Oxidation Of Methane ◽  
Iron Sulfides ◽  
Sulfate Reducing ◽  
Reducing Bacteria ◽  
Biogenic Iron

The syntrophic community between anaerobic methanotrophic archaea and sulfate reducing bacteria forms thick, black layers within multi-layered microbial mats in chimney-like carbonate concretions of methane seeps located in the Black Sea Crimean shelf. The microbial consortium conducts anaerobic oxidation of methane, which leads to the formation of mainly two biomineral by-products, calcium carbonates and iron sulfides, building up these chimneys. Iron sulfides are generated by the microbial reduction of oxidized sulfur compounds in the microbial mats. Here we show that sulfate reducing bacteria deposit biogenic iron sulfides extra- and intracellularly, the latter in magnetosome-like chains. These chains appear to be stable after cell lysis and tend to attach to cell debris within the microbial mat. The particles may be important nuclei for larger iron sulfide mineral aggregates.

Sulfur isotope patterns of iron sulfide and barite nodules in the Upper Cretaceous Chalk of England and their regional significance in the origin of coloured chalks

2016 ◽  
Vol 66 (2) ◽  
pp. 227-256 ◽  
Author(s):  
Christopher V. Jeans ◽  
Alexandra V. Turchyn ◽  
Xu-Fang Hu
Keyword(s):  
Upper Cretaceous ◽  
Iron Sulfide ◽  
Sulfur Isotopes ◽  
Subsequent Development ◽  
Middle Part ◽  
Iron Sulfides ◽  
Sulfate Reducing ◽  
Basement Faults ◽  
Reducing Bacteria ◽  
The Relationship

AbstractThe relationship between the development of iron sulfide and barite nodules in the Cenomanian Chalk of England and the presence of a red hematitic pigment has been investigated using sulfur isotopes. In southern England where red and pink chalks are absent, iron sulfide nodules are widespread. Two typical large iron sulfide nodules exhibit δ34S ranging from −48.6‰ at their core to −32.6‰ at their outer margins. In eastern England, where red and pink chalks occur in three main bands, there is an antipathetic relationship between the coloured chalks and the occurrence of iron sulfide or barite nodules. Here iron sulfide, or its oxidised remnants, are restricted to two situations: (1) in association with hard grounds that developed originally in chalks that contained the hematite pigment or its postulated precursor FeOH3, or (2) in regional sulfidization zones that cut across the stratigraphy. In the Cenomanian Chalk exposed in the cliffs at Speeton, Yorkshire, pyrite and marcasite (both iron sulfide) nodules range in δ34S from −34.7‰ to +40.0‰. In the lower part of the section δ34S vary from −34.8‰ to +7.8‰, a single barite nodule has δ34S between +26.9‰ and +29.9‰. In the middle part of the section δ34S ranges from +23.8‰ to +40.0‰. In the sulfidization zones that cut across the Cenomanian Chalk of Lincolnshire the iron sulfide nodules are typically heavily weathered but these may contain patches of unoxidised pyrite. In these zones, δ34S ranges from −32.9‰ to +7.9‰. The cross-cutting zones of sulfidization in eastern England are linked to three basement faults – the Flamborough Head Fault Zone, the Caistor Fault and the postulated Wash Line of Jeans (1980) – that have affected the deposition of the Chalk. It is argued that these faults have been both the conduits by which allochthonous fluids – rich in hydrogen sulfide/sulfate, hydrocarbons and possibly charged with sulfate-reducing bacteria – have penetrated the Cenomanian Chalk as the result of movement during the Late Cretaceous or Cenozoic. These invasive fluids are associated with (1) the reduction of the red hematite pigment or its praecursor, (2) the subsequent development of both iron sulfides and barite, and (3) the loss of overpressure in the Cenomanian Chalk and its late diagenetic hardening by anoxic cementation. Evidence is reviewed for the origin of the red hematite pigment of the coloured chalks and for the iron involved in the development of iron sulfides, a hydrothermal or volcanogenic origin is favoured.

Corrosion characteristics of sulfate-reducing bacteria (SRB) and the role of molecular biology in SRB studies: an overview

2016 ◽  
Vol 34 (1-2) ◽  
pp. 41-63 ◽  
Author(s):  
Balakrishnan Anandkumar ◽  
Rani P. George ◽  
Sundaram Maruthamuthu ◽  
Natarajan Parvathavarthini ◽  
Uthandi Kamachi Mudali
Keyword(s):  
Molecular Biology ◽  
Sulfate Reducing Bacteria ◽  
Microbiologically Influenced Corrosion ◽  
Bacterial Group ◽  
Iron Sulfides ◽  
Sulfate Reducing ◽  
Molecular Approaches ◽  
Citrate Metabolism ◽  
Reducing Bacteria

AbstractSulfate-reducing bacteria (SRB), an anaerobic bacterial group, are found in many environments like freshwater, marine sediments, agricultural soil, and oil wells where sulfate is present. SRB derives energy from electron donors such as sulfate, elemental sulfur or metals, and fermenting nitrate. It is the major bacterial group involved in the microbiologically influenced corrosion (MIC), souring, and biofouling problems in oil-gas-producing facilities as well as transporting and storage facilities. SRB utilizes sulfate ions as an electron acceptor and produce H2S, which is an agent of corrosion, causing severe economic damages. Various theories have been proposed on the direct involvement of H2S and iron sulfides in corrosion; H2S directly attacks and causes corrosion of metals and alloys. Many reviews have been presented on the aforementioned aspects. This review specifically focused on SRB corrosion and the role of molecular biology tools in SRB corrosion studies viz. cathodic and anodic depolarization theories, corrosion characteristics of thermophilic SRB and influence of hydrogenase, temperature, and pressure in thermophilic SRB corrosion, SRB taxonomy, molecular approaches adopted in SRB taxonomical studies, sulfate and citrate metabolism analyses in completed SRB genomes, and comparative studies on SRB’s dissimilatory sulfite reductase structures.

scholarly journals Assessing the Role of Iron Sulfides in the Long Term Sequestration of Uranium by Sulfate-Reducing Bacteria

2013 ◽  
Author(s):  
Kim F. Hayes ◽  
Yuqiang Bi ◽  
Julian Carpenter ◽  
Sung Pil Hyng ◽  
Bruce E. Rittmann ◽  
...  
Keyword(s):  
Sulfate Reducing Bacteria ◽  
Iron Sulfides ◽  
Sulfate Reducing ◽  
Reducing Bacteria

Bacterial Production of Iron Sulfides

1990 ◽  
Vol 218 ◽  
Author(s):  
Dennis A. Bazylinski
Keyword(s):  
Iron Sulfide ◽  
Iron Sulfides ◽  
Sulfate Reducing ◽  
Sulfide Production ◽  
Iron Sulfide Minerals ◽  
Chemical Factors ◽  
Physical Changes ◽  
Physical And Chemical ◽  
Reducing Bacteria ◽  
Extracellular Environment

AbstractIron sulfide production by bacteria can be classified as extracellular or intracellular. Extracellular iron sulfide production is mediated by anaerobic, dissimilatory sulfate-reducing bacteria which produce sulfide as a product of their respiration. Released sulfide reacts with iron (and other metals) in the extracellular environment producing a variety of iron sulfide minerals including “amorphous iron sulfide”, mackinawite, greigite, pyrrhotite, marcasite, and pyrite. The type of minerals formed is dependent upon pH, Eh, and other physical and chemical factors. Extracellular production of these minerals are examples of biologically-induced mineralization in which mineral formation occurs from chemical and/or physical changes in the surrounding environment by the organism.

scholarly journals Corrosion of Iron by Sulfate-Reducing Bacteria: New Views of an Old Problem

2013 ◽  
Vol 80 (4) ◽  
pp. 1226-1236 ◽  
Author(s):  
Dennis Enning ◽  
Julia Garrelfs
Keyword(s):  
Iron Sulfide ◽  
Corrosion Damage ◽  
Sulfate Reducing Bacteria ◽  
Chemical Agent ◽  
Iron Corrosion ◽  
Economic Implications ◽  
Sulfate Reducing ◽  
Microbially Influenced Corrosion ◽  
Corrosion Of Iron ◽  
Reducing Bacteria

ABSTRACTAbout a century ago, researchers first recognized a connection between the activity of environmental microorganisms and cases of anaerobic iron corrosion. Since then, such microbially influenced corrosion (MIC) has gained prominence and its technical and economic implications are now widely recognized. Under anoxic conditions (e.g., in oil and gas pipelines), sulfate-reducing bacteria (SRB) are commonly considered the main culprits of MIC. This perception largely stems from three recurrent observations. First, anoxic sulfate-rich environments (e.g., anoxic seawater) are particularly corrosive. Second, SRB and their characteristic corrosion product iron sulfide are ubiquitously associated with anaerobic corrosion damage, and third, no other physiological group produces comparably severe corrosion damage in laboratory-grown pure cultures. However, there remain many open questions as to the underlying mechanisms and their relative contributions to corrosion. On the one hand, SRB damage iron constructions indirectly through a corrosive chemical agent, hydrogen sulfide, formed by the organisms as a dissimilatory product from sulfate reduction with organic compounds or hydrogen (“chemical microbially influenced corrosion”; CMIC). On the other hand, certain SRB can also attack iron via withdrawal of electrons (“electrical microbially influenced corrosion”; EMIC),viz., directly by metabolic coupling. Corrosion of iron by SRB is typically associated with the formation of iron sulfides (FeS) which, paradoxically, may reduce corrosion in some cases while they increase it in others. This brief review traces the historical twists in the perception of SRB-induced corrosion, considering the presently most plausible explanations as well as possible early misconceptions in the understanding of severe corrosion in anoxic, sulfate-rich environments.

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