The impact of temperature, chlorides and sulfate-reducing bacteria on the corrosion of steel in soil

2021 ◽  
pp. 1-5
Author(s):  
Ling Ding ◽  
Amir Poursaee
Keyword(s):  
Sulfate Reducing Bacteria ◽  
Sulfate Reducing ◽  
Corrosion Of Steel ◽  
Reducing Bacteria ◽  
The Impact

scholarly journals Integrative analysis of <i>Geobacter</i> spp. and sulfate-reducing bacteria during uranium bioremediation

2012 ◽  
Vol 9 (3) ◽  
pp. 1033-1040 ◽  
Author(s):  
M. Barlett ◽  
K. Zhuang ◽  
R. Mahadevan ◽  
D. Lovley
Keyword(s):  
Sulfate Reducing Bacteria ◽  
Field Trials ◽  
Second Phase ◽  
Sulfate Reducing ◽  
Organic Electron ◽  
Poor Understanding ◽  
Key Factor ◽  
Reducing Bacteria ◽  
The Impact

Abstract. Enhancing microbial U(VI) reduction with the addition of organic electron donors is a promising strategy for immobilizing uranium in contaminated groundwaters, but has yet to be optimized because of a poor understanding of the factors controlling the growth of various microbial communities during bioremediation. In previous field trials in which acetate was added to the subsurface, there were two distinct phases: an initial phase in which acetate-oxidizing, U(VI)-reducing Geobacter predominated and U(VI) was effectively reduced and a second phase in which acetate-oxidizing sulfate reducing bacteria (SRB) predominated and U(VI) reduction was poor. The interaction of Geobacter and SRB was investigated both in sediment incubations that mimicked in situ bioremediation and with in silico metabolic modeling. In sediment incubations, Geobacter grew quickly but then declined in numbers as the microbially reducible Fe(III) was depleted whereas the SRB grow more slowly and reached dominance after 30–40 days. Modeling predicted a similar outcome. Additional modeling in which the relative initial percentages of the Geobacter and SRB were varied indicated that there was little to no competitive interaction between Geobacter and SRB when acetate was abundant. Further simulations suggested that the addition of Fe(III) would revive the Geobacter, but have little to no effect on the SRB. This result was confirmed experimentally. The results demonstrate that it is possible to predict the impact of amendments on important components of the subsurface microbial community during groundwater bioremediation. The finding that Fe(III) availability, rather than competition with SRB, is the key factor limiting the activity of Geobacter during in situ uranium bioremediation will aid in the design of improved uranium bioremediation strategies.

Influence of Sulfate Reducing Bacteria on Corrosion of Steel Q235 during Natural Evaporation in Soils

2012 ◽  
Vol 610-613 ◽  
pp. 243-248
Author(s):  
Xin Wang ◽  
Jin Xu ◽  
Cheng Sun
Keyword(s):  
Electrochemical Impedance Spectroscopy ◽  
Electron Probe ◽  
Electrochemical Impedance ◽  
Sulfate Reducing Bacteria ◽  
Microbiological Analysis ◽  
X Ray ◽  
Sulfate Reducing ◽  
Corrosion Rates ◽  
Corrosion Of Steel ◽  
Reducing Bacteria

Corrosion behavior of steel Q235 was investigated during natural evaporation in soils with and without sulfate reducing bacteria (SRB) by microbiological analysis, electrochemical impedance spectroscopy (EIS), energy dispersive X-ray analysis (EDXA) and electron-probe X-ray microanalysis (EPMA). The results show that during natural evaporation, oxygen content increases, amounts of SRB decrease, and the corrosion rates of steel Q235 increase with decreasing humidity of soils with and without SRB. Increments of the corrosion rates are much bigger in soils with SRB than those without SRB.

The simultaneous presence of green rust 2 and sulfate reducing bacteria in the corrosion of steel sheet piles in a harbour area

1992 ◽  
Vol 69 (1-4) ◽  
pp. 875-878 ◽  
Author(s):  
J. -M. R. Génin ◽  
A. A. Olowe ◽  
N. D. Benbouzid-Rollet ◽  
D. Prieur ◽  
M. Confente ◽  
...  
Keyword(s):  
Steel Sheet ◽  
Sulfate Reducing Bacteria ◽  
Green Rust ◽  
Simultaneous Presence ◽  
Sulfate Reducing ◽  
Corrosion Of Steel ◽  
Reducing Bacteria ◽  
Harbour Area

Using quaternary ammonia salts for inhibiting corrosion of steel in the two-phase system in the presence of sulfate-reducing bacteria

1991 ◽  
Vol 26 (4) ◽  
pp. 410-412
Author(s):  
Z. I. Dzhafarov ◽  
S. M. Beloglazov ◽  
V. N. Geminov ◽  
N. N. Demushin ◽  
V. N. Polyakov
Keyword(s):  
Sulfate Reducing Bacteria ◽  
Phase System ◽  
Two Phase ◽  
Sulfate Reducing ◽  
Corrosion Of Steel ◽  
Reducing Bacteria

scholarly journals Integrative analysis of the interactions between <i>Geobacter</i> spp. and sulfate-reducing bacteria during uranium bioremediation

2011 ◽  
Vol 8 (6) ◽  
pp. 11337-11357 ◽  
Author(s):  
M. Barlett ◽  
K. Zhuang ◽  
R. Mahadevan ◽  
D. R. Lovley
Keyword(s):  
Sulfate Reducing Bacteria ◽  
Field Trials ◽  
Second Phase ◽  
Sulfate Reducing ◽  
Organic Electron ◽  
Poor Understanding ◽  
Key Factor ◽  
Reducing Bacteria ◽  
The Impact

Abstract. Enhancing microbial U(VI) reduction with the addition of organic electron donors is a promising strategy for immobilizing uranium in contaminated groundwaters, but has yet to be optimized because of a poor understanding of the factors controlling the growth of various microbial communities during bioremediation. In previous field trials in which acetate was added to the subsurface, there were two distinct phases: an initial phase in which acetate-oxidizing, U(VI)-reducing Geobacter predominated and U(VI) was effectively reduced and a second phase in which acetate-oxidizing sulfate reducing bacteria (SRB) predominated and U(VI) reduction was poor. The interaction of Geobacter and SRB was investigated both in sediment incubations that mimicked in situ bioremediation and with in silico metabolic modeling. In sediment incubations, Geobacter grew quickly but then declined in numbers as the microbially reducible Fe(III) was depleted whereas the SRB grow more slowly and reached dominance after 30–40 days. Modeling predicted a similar outcome. Additional modeling in which the relative initial percentages of the Geobacter and SRB were varied indicated that there was little to no competitive interaction between Geobacter and SRB when acetate was abundant. Further simulations suggested that the addition of Fe(III) would revive the Geobacter, but have little to no effect on the SRB. This result was confirmed experimentally. The results demonstrate that it is possible to predict the impact of amendments on important components of the subsurface microbial community during groundwater bioremediation. The finding that Fe(III) availability, rather than competition with SRB, is the key factor limiting the activity of Geobacter during in situ uranium bioremediation will aid in the design of improved uranium bioremediation strategies.

Sulfate-reducing bacteria in leachate-polluted aquifers along the shore of the East China Sea

2009 ◽  
Vol 55 (7) ◽  
pp. 818-828 ◽  
Author(s):  
Xiu-Juan Wu ◽  
Jian-Liang Pan ◽  
Xiang-Long Liu ◽  
Jing Tan ◽  
Dao-Tang Li ◽  
...  
Keyword(s):  
East China Sea ◽  
Denaturing Gradient Gel Electrophoresis ◽  
Pcr Amplification ◽  
Sulfate Reducing Bacteria ◽  
East China ◽  
The East China Sea ◽  
China Sea ◽  
Sulfate Reducing ◽  
Reducing Bacteria ◽  
The Impact

The diversity of sulfate-reducing bacteria (SRB) in the aquifer underlying the Laogang Landfill along the shore of the East China Sea was investigated. The DNA extracted from 15 groundwater samples was subjected to PCR amplification of the dissimilatory sulfite reductase (dsr) gene. Full-length dsrAB amplicons (~1.9 kb) were then used to construct 4 clone libraries, while the dsrB amplicons (~350 bp) were used for denaturing gradient gel electrophoresis (DGGE) analysis. The clones in the 4 libraries covered all cultured SRB lineages, as well as a deeply branching clade not affiliated with any cultured SRB. In addition, nearly 80% of the 388 clones in the 4 libraries were similar to sequences of the Deltaproteobacteria, Desulfobacteriaceae, Desulfovibrionales, Syntrophaceae, and Desulfobulbaceae. Furthermore, a wide variety of marine SRB was detected, which indicated that seawater has infiltrated the aquifer. Indeed, the DGGE profiles revealed obvious variations in SRB diversity among the 15 samples, which clustered in accordance with the sulfate concentration of the samples ([SO42–]). Moreover, the sulfate concentrations and SRB diversity along the leachate plume did not show regular variation, which suggests the impact of both groundwater flow and seawater intrusion.

scholarly journals Constraints on mechanisms and rates of anaerobic oxidation of methane by microbial consortia: process-based modeling of ANME-2 archaea and sulfate reducing bacteria interactions

2008 ◽  
Vol 5 (3) ◽  
pp. 1933-1967 ◽  
Author(s):  
B. Orcutt ◽  
C. Meile
Keyword(s):  
Sulfate Reducing Bacteria ◽  
Substrate Affinity ◽  
Main Process ◽  
Anaerobic Oxidation Of Methane ◽  
Anaerobic Oxidation ◽  
Intermediate Species ◽  
Sulfate Reducing ◽  
Oxidation Of Methane ◽  
Reducing Bacteria ◽  
The Impact

Abstract. Anaerobic oxidation of methane (AOM) is the main process responsible for the removal of methane generated in Earth's marine subsurface environments. However, the biochemical mechanism of AOM remains elusive. By explicitly resolving the observed spatial arrangement of methanotrophic archaea and sulfate reducing bacteria found in consortia mediating AOM, potential intermediates involved in the electron transfer between the methane oxidizing and sulfate reducing partners were investigated via a consortium-scale reaction transport model that integrates the effect of diffusional transport with thermodynamic and kinetic controls on microbial activity. Model simulations were used to assess the impact of poorly constrained microbial characteristics such as minimum energy requirements to sustain metabolism, substrate affinity and cell specific rates. The role of environmental conditions such as the influence of methane levels on the feasibility of H2, formate and acetate as intermediate species, and the impact of the abundance of intermediate species on pathway reversal was examined. The results show that higher production rates of intermediates via AOM lead to increased diffusive fluxes from the methane oxidizing archaea to sulfate reducing bacteria, but the build-up of the exchangeable species causes the energy yield of AOM to drop below that required for ATP production. Comparison to data from laboratory experiments shows that under the experimental conditions of Nauhaus et al. (2007), neither hydrogen nor formate is exchanged fast enough between the consortia partners to achieve measured rates of metabolic activity, but that acetate exchange might support rates that approach those observed.

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