Magnetite as a precursor for green rust through the hydrogenotrophic activity of the iron‐reducing bacteria <i>Shewanella putrefaciens</i>

Etique, Marjorie; Jorand, F.; Ruby, Christian

doi:10.1111/gbi.12170

Cited by 33 publications

(22 citation statements)

References 87 publications

(200 reference statements)

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“…Taking into account the exact nature of the secondary iron minerals and the electron donor source is necessary to understand the exergonic character of the biotic transformation of magnetite to GR, which had been considered to date as thermodynamically unfavorable at circumneutral pH. This finding reinforces the hypothesis that GR would be the cornerstone of the microbial transformations of iron-bearing minerals in the anoxic biogeochemical cycle of iron and opens up new possibilities for the interpretation of the evolution of Earth's history and for the understanding of biocorrosion processes in the field of applied science [409]. This may also have important implications when engineered MNPs are used for environmental remediation.…”

Section: Discussionsupporting

confidence: 67%

Environmental implications and applications of engineered nanoscale magnetite and its hybrid nanocomposites: A review of recent literature

2017

Journal of Hazardous Materials

306

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Section: Discussionsupporting

confidence: 67%

Environmental implications and applications of engineered nanoscale magnetite and its hybrid nanocomposites: A review of recent literature

2017

Journal of Hazardous Materials

306

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“…The formation of green rust as a secondary mineral during the bioreduction of Fe(III) oxides was first reported by Fredrickson et al during the reduction of ferrihydrite by S. putrefaciens CN32 [17]. Since then, green rusts have been reported as products of the microbial reduction of Fe(III) oxides in laboratory-based studies under a wide range of experimental conditions [12,18,19,23,27,29,[31][32][33]36,[38][39][40][41]55,65,101,108,118,[122][123][124]. In addition to the presence/concentration of phosphate, other factors have been proposed to contribute to the formation of green rusts during Fe(III) oxide bioreduction, including the presence of other oxyanions (arsenate, silicate, molybdate, tungstate, etc.)…”

Section: Formation Of Green Rust As a Secondary Mineral During Fe(iii) Oxide Bioreductionmentioning

confidence: 90%

Effects of Fe(III) Oxide Mineralogy and Phosphate on Fe(II) Secondary Mineral Formation during Microbial Iron Reduction

et al. 2021

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The bioreduction of Fe(III) oxides by dissimilatory iron-reducing bacteria may result in the formation of a suite of Fe(II)-bearing secondary minerals, including magnetite (a mixed Fe(II)/Fe(III) oxide), siderite (Fe(II) carbonate), vivianite (Fe(II) phosphate), chukanovite (ferrous hydroxy carbonate), and green rusts (mixed Fe(II)/Fe(III) hydroxides). In an effort to better understand the factors controlling the formation of specific Fe(II)-bearing secondary minerals, we examined the effects of Fe(III) oxide mineralogy, phosphate concentration, and the availability of an electron shuttle (9,10-anthraquinone-2,6-disulfonate, AQDS) on the bioreduction of a series of Fe(III) oxides (akaganeite, feroxyhyte, ferric green rust, ferrihydrite, goethite, hematite, and lepidocrocite) by Shewanella putrefaciens CN32, and the resulting formation of secondary minerals, as determined by X-ray diffraction, Mössbauer spectroscopy, and scanning electron microscopy. The overall extent of Fe(II) production was highly dependent on the type of Fe(III) oxide provided. With the exception of hematite, AQDS enhanced the rate of Fe(II) production; however, the presence of AQDS did not always lead to an increase in the overall extent of Fe(II) production and did not affect the types of Fe(II)-bearing secondary minerals that formed. The effects of the presence of phosphate on the rate and extent of Fe(II) production were variable among the Fe(III) oxides, but in general, the highest loadings of phosphate resulted in decreased rates of Fe(II) production, but ultimately higher levels of Fe(II) than in the absence of phosphate. In addition, phosphate concentration had a pronounced effect on the types of secondary minerals that formed; magnetite and chukanovite formed at phosphate concentrations of ≤1 mM (ferrihydrite), <~100 µM (lepidocrocite), 500 µM (feroxyhyte and ferric green rust), while green rust, or green rust and vivianite, formed at phosphate concentrations of 10 mM (ferrihydrite), ≥100 µM (lepidocrocite), and 5 mM (feroxyhyte and ferric green rust). These results further demonstrate that the bioreduction of Fe(III) oxides, and accompanying Fe(II)-bearing secondary mineral formation, is controlled by a complex interplay of mineralogical, geochemical, and microbiological factors.

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“…They are found in Fe(II)-Fe(III) transition zones in a variety of aquatic and terrestrial environments including groundwater[101,102], surface waters[103], soils[104][105][106][107][108], and sediments[109][110][111], where green rust minerals such as fougérite, trébeurdenite, and mössbauerite[112][113][114] may play a central role in Fe redox cycling. Green rusts have been reported as secondary mineralization products of the bioreduction of Fe(III) oxides in laboratory-based studies under a wide range of experimental conditions[16,[33][34][35]39,41,[44][45][46][47][48][49][50]53,55,76,97,100,[115][116][117][118][119]. Both carbonate and sulfate green rusts formed depending on the anionic composition of our experimental systems.…”

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confidence: 83%

Electron Donor Utilization and Secondary Mineral Formation during the Bioreduction of Lepidocrocite by Shewanella putrefaciens CN32

et al. 2019

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The bioreduction of Fe(III) oxides by dissimilatory iron reducing bacteria (DIRB) may result in the production of a suite of Fe(II)-bearing secondary minerals, including magnetite, siderite, vivianite, green rusts, and chukanovite; the formation of specific phases controlled by the interaction of various physiological and geochemical factors. In an effort to better understand the effects of individual electron donors on the formation of specific Fe(II)-bearing secondary minerals, we examined the effects of a series of potential electron donors on the bioreduction of lepidocrocite (γ-FeOOH) by Shewanella putrefaciens CN32. Biomineralization products were identified by X-ray diffraction, Mössbauer spectroscopy, and scanning electron microscopy. Acetate, citrate, ethanol, glucose, glutamate, glycerol, malate, and succinate were not effectively utilized for the bioreduction of lepidocrocite by S. putrefaciens CN32; however, substantial Fe(II) production was observed when formate, lactate, H2, pyruvate, serine, or N acetylglucosamine (NAG) was provided as an electron donor. Carbonate or sulfate green rust was the dominant Fe(II)-bearing secondary mineral when formate, H2, lactate, or NAG was provided, however, siderite formed with pyruvate or serine. Geochemical modeling indicated that pH and carbonate concentration are the key factors determining the prevalence of carbonate green rust verses siderite.

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Magnetite as a precursor for green rust through the hydrogenotrophic activity of the iron‐reducing bacteria Shewanella putrefaciens

Cited by 33 publications

References 87 publications

Environmental implications and applications of engineered nanoscale magnetite and its hybrid nanocomposites: A review of recent literature

Environmental implications and applications of engineered nanoscale magnetite and its hybrid nanocomposites: A review of recent literature

Effects of Fe(III) Oxide Mineralogy and Phosphate on Fe(II) Secondary Mineral Formation during Microbial Iron Reduction

Electron Donor Utilization and Secondary Mineral Formation during the Bioreduction of Lepidocrocite by Shewanella putrefaciens CN32

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