Ba and Ni speciation in a nodule of binary Mn oxide phase composition from Lake Baikal

Manceau, Alain; Kersten, Michael; Marcus, Matthew A.; Geoffroy, Nicolas; Granina, L. Z.

doi:10.1016/j.gca.2007.02.007

Cited by 74 publications

(60 citation statements)

References 49 publications

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“…The ratio of external to internal Mn sites increases when the crystal size decreases, and biogenic vernadite with a layer dimension of 6-7 nm ) has ~20% of its Mn atoms exposed at the crystal edge compared to ~0.4% for a birnessite layer of ~30 nm in diameter (Lanson et al 2000). Thus, organic pollutants can be degraded and trace metals taken up by vernadite in natural systems (McKenzie 1980;Stone 1987;Stone and Ulrich 1989;Sunda and Kieber 1994;Manceau et al 2003Manceau et al , 2004Manceau et al , 2007aManceau et al , 2007bVillatoro-Monzón et al 2003;Marcus et al 2004a;Tebo et al 2004;Hochella et al 2005aHochella et al , 2005bIsaure et al 2005;Villalobos et al 2005;Peacock and Sherman 2007;Peacock 2009). …”

Section: +mentioning

confidence: 99%

Structure of nanocrystalline phyllomanganates produced by freshwater fungi

Grangeon

Lanson

Miyata

et al. 2010

American Mineralogist

145

134

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The crystal structures of biogenic Mn oxides produced by three fungal strains isolated from stream pebbles were determined using chemical analyses, XANES and EXAFS spectroscopy, and powder X-ray diffraction. The fungi-mediated oxidation of aqueous Mn 2+ produces layered Mn oxides analogous to vernadite, a natural nanostructured and turbostratic variety of birnessite. The crystallites have domain dimensions of ~10 nm in the layer plane (equivalent to ~35 MnO 6 octahedra), and ~1.5-2.2 nm perpendicularly (equivalent to ~2-3 layers), on average. The layers have hexagonal symmetry and from 22 to 30% vacant octahedral sites. This proportion likely includes edge sites, given the extremely small lateral size of the layers. The layer charge deficit, resulting from the missing layer Mn 4+ cations, is balanced mainly by interlayer Mn 3+ cations in triple-corner sharing position above and/or below vacant layer octahedra. The high surface area, defective crystal structure, and mixed Mn valence confer to these bio-minerals an extremely high chemical reactivity. They serve in the environment as sorption substrate for trace elements and possess catalytic redox properties.

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Section: +mentioning

confidence: 99%

Structure of nanocrystalline phyllomanganates produced by freshwater fungi

Grangeon

Lanson

Miyata

et al. 2010

American Mineralogist

145

134

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“…Besides the retention of Ni on birnessite precipitated in soils or sediments of metalimpacted ecosystems, ferromanganese nodules can accumulate up to percent levels of Ni by mass (Manceau et al, 1987;Bodei et al, 2007;Manceau et al, 2007a). In nodules from marine (Bodei et al, 2007;Peacock and Sherman, 2007a), freshwater (Manceau et al, 2007a), and soil environments (Manceau et al, 2002b;Manceau et al, 2003), Ni was present as a divalent cation incorporated (inc) into the octahedral sheets of layer-type Mn(IV) oxide minerals ( Fig.…”

Section: Introductionmentioning

confidence: 99%

“…In nodules from marine (Bodei et al, 2007;Peacock and Sherman, 2007a), freshwater (Manceau et al, 2007a), and soil environments (Manceau et al, 2002b;Manceau et al, 2003), Ni was present as a divalent cation incorporated (inc) into the octahedral sheets of layer-type Mn(IV) oxide minerals ( Fig. 1a).…”

Section: Introductionmentioning

confidence: 99%

Mechanisms of nickel sorption by a bacteriogenic birnessite

Peña

Kwon

Refson

et al. 2010

Geochimica et Cosmochimica Acta

119

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Bacteriogenic birnessite nanoparticles have a large capacity to adsorb metal cations due to their high proportion of cation vacancy defects. In the current study, a synergistic experimental-computational approach was used to study the molecular-scale mechanisms of Ni sorption at varying loadings and at pH 6-8 using the hexagonal birnessite produced by Pseudomonas putida GB-1. We found that Ni is scavenged effectively by the biomass-

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“…Phosphate systems are of particular interest due to the importance of P cycles and the low solubilities of many metal-phosphate phases. Reduction of Fe(III)-oxides by iron-reducing bacteria releases Fe(II) to solution and can lead to the precipitation of vivianite (Fe 3 (PO 4 ) 2 Á8H 2 O), which is a major sink for Fe and for heavy metals in fresh water sedimentary systems (Taylor and Boult, 2007); anthropogenic contamination of groundwater and soil systems can lead to precipitation (or co-precipitation) of heavy metals as oxides and phosphate phases in these systems (e.g., Kirpichtchikova et al, 2006;Manceau et al, 2007;Terzano et al, 2007); and remediation strategies such as phosphate amendments rely on precipitation reactions in bacteria-bearing systems to reduce concentrations of dissolved metals in systems, such as those contaminated with dissolved U (e.g., Beazley et al, 2007;Martinez et al, 2007;Wellman et al, 2007;Ndiba et al, 2008) or by acid mine drainage (e.g., Schultze-Lam et al, 1996). The common denominator between all of these systems is the precipitation of phosphate and other mineral phases in environments that can be rich in non-metabolizing bacterial cells and/or bacterial exudates.…”

Section: Introductionmentioning

confidence: 99%

The effects of non-metabolizing bacterial cells on the precipitation of U, Pb and Ca phosphates

Dunham‐Cheatham

Xue

Bunker

et al. 2011

Geochimica et Cosmochimica Acta

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In this study, we test the potential for passive cell wall biomineralization by determining the effects of non-metabolizing bacteria on the precipitation of uranyl, lead, and calcium phosphates from a range of over-saturated conditions. Experiments were performed using Gram-positive Bacillus subtilis and Gram-negative Shewanella oneidensis MR-1. After equilibration, the aqueous phases were sampled and the remaining metal and P concentrations were analyzed using inductively coupled plasmaoptical emission spectroscopy (ICP-OES); the solid phases were collected and analyzed using X-ray diffractometry (XRD), transmission electron microscopy (TEM), and X-ray absorption spectroscopy (XAS).At the lower degrees of over-saturation studied, bacterial cells exerted no discernable effect on the mode of precipitation of the metal phosphates, with homogeneous precipitation occurring exclusively. However, at higher saturation states in the U system, we observed heterogeneous mineralization and extensive nucleation of hydrogen uranyl phosphate (HUP) mineralization throughout the fabric of the bacterial cell walls. This mineral nucleation effect was observed in both B. subtilis and S. oneidensis cells. In both cases, the biogenic mineral precipitates formed under the higher saturation state conditions were significantly smaller than those that formed in the abiotic controls.The cell wall nucleation effects that occurred in some of the U systems were not observed under any of the saturation state conditions studied in the Pb or Ca systems. The presence of B. subtilis significantly decreased the extent of precipitation in the U system, but had little effect in the Pb and Ca systems. At least part of this effect is due to higher solubility of the nanoscale HUP precipitate relative to macroscopic HUP. This study documents several effects of non-metabolizing bacterial cells on the nature and extent of metal phosphate precipitation. Each of these effects likely contributes to higher metal mobilities in geologic media, but the effects are not universal, and occur only with some elements and only under a subset of the conditions studied.

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Ba and Ni speciation in a nodule of binary Mn oxide phase composition from Lake Baikal

Cited by 74 publications

References 49 publications

Structure of nanocrystalline phyllomanganates produced by freshwater fungi

Structure of nanocrystalline phyllomanganates produced by freshwater fungi

Mechanisms of nickel sorption by a bacteriogenic birnessite

The effects of non-metabolizing bacterial cells on the precipitation of U, Pb and Ca phosphates

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