Effect of SRB-zeolite technology on immobilization of lead in soil

Wei, Wei; Yu, Jiang; Wang, Yating; Tao, Hongqun; Deng, Siwei; Ran, Zongxin

doi:10.3724/sp.j.1249.2018.06597

Cited by 2 publications

(2 citation statements)

References 9 publications

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“…, and the anode is the dissolution of Fe, which further verifies that SRB promotes the corrosion of X80 steel [36] . The corrosion mechanism is shown in equations (1) to (6), and the specific reaction path is shown in Fig.11 [3] .…”

Section: -mentioning

confidence: 64%

Study on Corrosion Behavior of X80 Steel under Stripping Coating by Sulfate Reducing Bacteria

Cui

Qin

Gao

2020

Preprint

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Background: At present, microorganism has been considered as important factors that threaten to buried pipelines with disbonded coatings. Aiming at the problem of unknown corrosion mechanism of sulfate-reducing bacteria (SRB), a series of studies have been carried out in this paper. Spectrophotometer and fluorescent labeling technology are used to study the growth and attachment of SRB in the simulated soil solution. The electrochemical behavior of X80 pipeline steel with or without SRB was researched by electrochemical methods such as open circuit potential, dynamic potential polarization curve, and electrochemical impedance spectroscopy. The microscopic morphology of the corrosion products on the surface of the sample was observed with a scanning electron microscope (SEM), and the element content of the corrosion products on the surface of the sample after corrosion was observed using X-ray energy spectrum (EDS) analysis. Results: The results showed that the growth and reproduction of SRB caused the pH of the soil simulated solution to increase, which promoted the corrosion of X80 steel. In addition, the cathode reaction of X80 steel in a sterile environment is the reduction of H+, and the main corrosion product is Fe oxides. When the soil simulation solution contains SRB, the cathodic reaction is controlled by both H+ reduction and sulfide depolarization reactions, and FeS appears in the corrosion products. Conclusion: Although the life cycle of SRB is only about 14 days, the corrosion of X80 steel is greatly promoted by SRB, and even causes corrosion perforation, which will bring huge economic losses and serious safety hazards.

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Section: -mentioning

confidence: 64%

Study on Corrosion Behavior of X80 Steel under Stripping Coating by Sulfate Reducing Bacteria

Cui

Qin

Gao

2020

Preprint

View full text Add to dashboard Cite

show abstract

“…This is because the corrosion products of X80 steel in sterile soil are mainly oxidation Iron, while SRB is present in the soil, sulfide of iron and phosphide of iron will be formed on the surface of the sample [ 7 ]. Therefore, the cathodic reaction process of the corrosion of X80 steel in SRB-containing soil is the depolarization reaction of phosphide and sulfide, which further proves that SRB promotes the corrosion of X80 steel [ 34 ]. The corrosion mechanism are shown in eqs.…”

Section: Resultsmentioning

confidence: 99%

Study on corrosion behavior of X80 steel under stripping coating by sulfate reducing bacteria

2021

View full text Add to dashboard Cite

Background At present, microorganism has been considered as important factors that threaten to buried pipelines with disbonded coatings. Aiming at the problem of unknown corrosion mechanism of sulfate-reducing bacteria (SRB), a series of studies have been carried out in this paper. Spectrophotometer and fluorescent labeling technology are used to study the growth and attachment of SRB in the simulated soil solution. The corrosion behavior of X80 pipeline steel with or without SRB was researched by electrochemical methods such as open circuit potential, dynamic potential polarization curve, and electrochemical impedance spectroscopy. The microscopic morphology of the corrosion products on the surface was observed with a scanning electron microscope (SEM), and the element content of the corrosion products on the surface of the sample after corrosion was observed using X-ray energy spectrum (EDS) analysis. Results The results showed that the growth and reproduction of SRB caused the pH of the soil simulated solution to increase, which may promote the corrosion of X80 steel. In addition, the cathode reaction of X80 steel in a sterile environment is the reduction of H+, and the main corrosion product is iron oxide. When the soil simulation solution contains SRB, the cathodic reaction is controlled by both H+ reduction and sulfide depolarization reactions, and FeS appears in the corrosion products. Conclusion Although the life cycle of SRB is only about 14 days, the corrosion of X80 steel is greatly promoted by SRB, and even causes corrosion perforation, which will bring huge economic losses and serious safety hazards.

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Effect of SRB-zeolite technology on immobilization of lead in soil

Abstract: We prove that the Drinfeld center centralized by a symmetric fusion category is a symmetric monoidal functor if we choose proper domain and codomain categories. We also compute the factorization homology of stratified surfaces with coefficients satisfying certain anomaly-free conditions.

Cited by 2 publications

References 9 publications

Study on Corrosion Behavior of X80 Steel under Stripping Coating by Sulfate Reducing Bacteria

Study on Corrosion Behavior of X80 Steel under Stripping Coating by Sulfate Reducing Bacteria

Study on corrosion behavior of X80 steel under stripping coating by sulfate reducing bacteria

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