Accelerated Microbial Corrosion by Magnetite and Electrically Conductive Pili through Direct Fe0‐to‐Microbe Electron Transfer DOI
Yuting Jin,

Enze Zhou,

Toshiyuki Ueki

et al.

Angewandte Chemie, Journal Year: 2023, Volume and Issue: 135(38)

Published: Aug. 1, 2023

Abstract Electrobiocorrosion, the process in which microbes extract electrons from metallic iron (Fe 0 ) through direct Fe ‐microbe electrical connections, is thought to contribute costly corrosion of iron‐containing metals that impacts many industries. However, electrobiocorrosion mechanisms are poorly understood. We report here electrically conductive pili (e‐pili) and mineral magnetite play an important role electron transfer between Geobacter sulfurreducens , first microbe has been rigorously documented. Genetic modification express substantially diminished corrosive pitting rates ‐to‐microbe flux. Magnetite reduced resistance transfer, increasing currents intensifying pitting. Studies with mutants suggested promoted a manner similar outer‐surface c ‐type cytochrome OmcS. These findings, fact common product corrosion, suggest potential positive feedback loop produced during further accelerating electrobiocorrosion. The interactions e‐pili, cytochromes, demonstrate mechanistic complexities electrobiocorrosion, but also provide insights into detecting possibly mitigating this economically damaging process.

Language: Английский

Accelerated Microbial Corrosion by Magnetite and Electrically Conductive Pili through Direct Fe0‐to‐Microbe Electron Transfer DOI
Yuting Jin,

Enze Zhou,

Toshiyuki Ueki

et al.

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(38)

Published: Aug. 1, 2023

Electrobiocorrosion, the process in which microbes extract electrons from metallic iron (Fe0 ) through direct Fe0 -microbe electrical connections, is thought to contribute costly corrosion of iron-containing metals that impacts many industries. However, electrobiocorrosion mechanisms are poorly understood. We report here electrically conductive pili (e-pili) and mineral magnetite play an important role electron transfer between Geobacter sulfurreducens, first microbe has been rigorously documented. Genetic modification express substantially diminished corrosive pitting rates -to-microbe flux. Magnetite reduced resistance transfer, increasing currents intensifying pitting. Studies with mutants suggested promoted a manner similar outer-surface c-type cytochrome OmcS. These findings, fact common product corrosion, suggest potential positive feedback loop produced during further accelerating electrobiocorrosion. The interactions e-pili, cytochromes, demonstrate mechanistic complexities electrobiocorrosion, but also provide insights into detecting possibly mitigating this economically damaging process.

Language: Английский

Citations

41
Burning question: Are there sustainable strategies to prevent microbial metal corrosion? DOI Creative Commons
Di Wang,

Enze Zhou,

Dake Xu

et al.

Microbial Biotechnology, Journal Year: 2023, Volume and Issue: 16(11), P. 2026 - 2035

Published: Oct. 5, 2023

Abstract The global economic burden of microbial corrosion metals is enormous. Microbial iron‐containing most extensive under anaerobic conditions. Microbes form biofilms on metal surfaces and can directly extract electrons derived from the oxidation Fe 0 to 2+ support respiration. H 2 generated abiotic also serves as an electron donor for respiratory microbes. metabolites accelerate this oxidation. Traditional strategies curbing include cathodic protection, scrapping, a diversity biocides, alloys that protective layers or release toxic ions, polymer coatings. However, these approaches are typically expensive and/or limited applicability not environmentally friendly. Biotechnology may provide more effective sustainable solutions. Biocides produced with microbes be less eukaryotes, expanding environments potential application. Microbially surfactants diminish biofilm formation by corrosive microbes, quorum‐sensing inhibitors. Amendments phages predatory bacteria have been successful in attacking laboratory studies. Poorly deposit extracellular polysaccharides minerals protect surface their metabolites. Nitrate amendments permit nitrate reducers outcompete highly sulphate‐reducing reducing corrosion. Investigation all mitigation its infancy. More study, especially relevant conditions, including diverse communities, warranted.

Language: Английский

Citations

24
Conductive magnetic nanowires accelerated electron transfer between C1020 carbon steel and Desulfovibrio vulgaris biofilm DOI

Farah Mustafa Alrammah,

Lingjun Xu,

Niketan Patel

et al.

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 925, P. 171763 - 171763

Published: March 16, 2024

Language: Английский

Citations

8
Accelerated Microbial Corrosion by Magnetite and Electrically Conductive Pili through Direct Fe0‐to‐Microbe Electron Transfer DOI
Yuting Jin,

Enze Zhou,

Toshiyuki Ueki

et al.

Angewandte Chemie, Journal Year: 2023, Volume and Issue: 135(38)

Published: Aug. 1, 2023

Abstract Electrobiocorrosion, the process in which microbes extract electrons from metallic iron (Fe 0 ) through direct Fe ‐microbe electrical connections, is thought to contribute costly corrosion of iron‐containing metals that impacts many industries. However, electrobiocorrosion mechanisms are poorly understood. We report here electrically conductive pili (e‐pili) and mineral magnetite play an important role electron transfer between Geobacter sulfurreducens , first microbe has been rigorously documented. Genetic modification express substantially diminished corrosive pitting rates ‐to‐microbe flux. Magnetite reduced resistance transfer, increasing currents intensifying pitting. Studies with mutants suggested promoted a manner similar outer‐surface c ‐type cytochrome OmcS. These findings, fact common product corrosion, suggest potential positive feedback loop produced during further accelerating electrobiocorrosion. The interactions e‐pili, cytochromes, demonstrate mechanistic complexities electrobiocorrosion, but also provide insights into detecting possibly mitigating this economically damaging process.

Language: Английский

Citations

10