Dissolution of arsenopyrite (FeAsS) and galena (PbS) in the presence of desferrioxamine-B at pH 5

Cornejo-Garrido, Hilda; Fernández-Lomelín, Pilar; Guzmán, Julio; Cervini-Silva, Javiera

doi:10.1016/j.gca.2008.02.008

Cited by 19 publications

(7 citation statements)

References 44 publications

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“…Thus, metallophores may affect the fate and transport of metals that are not necessarily the target of biological uptake. Metallophores have been shown to bind (Anderegg et al 1963;Batka and Farkas 2006;Boukhalfa et al 2007;Christenson and Schijf 2011;Dahlheimer et al 2007;Farkas et al 2008;Frazier et al 2005;Hakemian et al 2005;Hernlem et al 1996Hernlem et al , 1999Jarvis and Hancock 1991;Mishra et al 2009;Moll et al 2008a, b, c;Whisenhunt et al 1996) and solubilize (Biver and Shotyk 2012;Brainard et al 1992;Cornejo-Garrido et al 2008;Dahlheimer et al 2007;Frazier et al 2005;Hakemian et al 2005;Hepinstall et al 2005;Kraemer et al 1999Kraemer et al , 2002Manecki and Maurice 2008;Mishra et al 2010;Schenkeveld et al 2014b; Wolff-Boenisch and Traina 2007b) a number of metals (e.g., Al, Am, Bi, Cm, In, Ru, Pb, Pd, Pt, Pu, Sb, Th, U, and a number of rare earth elements) which are not currently thought to have significant intracellular metabolic roles in most organisms and may even be toxic. These observations have led to the assertion that metallophores may affect the rate of dissolution and transport of these toxic metals in the environment, as well as to the suggestion that metallophores may have utility as remediative agents in environmental systems contaminated with toxic metals.…”

Section: Metallophores and Contaminant Metals: Mobilization Uptake mentioning

confidence: 99%

Metallophores and Trace Metal Biogeochemistry

et al. 2014

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Trace metal limitation not only affects the biological function of organisms, but also the health of ecosystems and the global cycling of elements. The enzymatic machinery of microbes helps to drive critical biogeochemical cycles at the macroscale, and in many cases, the function of metalloenzyme-mediated processes may be limited by the scarcity of essential trace metals. In response to these nutrient limitations, some organisms employ a strategy of exuding metallophores, biogenic ligands that facilitate the uptake of metal ions. For example, bacterial, fungal, and graminaceous plant species are known to use Fe(III)-binding siderophores for nutrient acquisition, providing the best known and most thoroughly studied example of metallophores. However, recent breakthroughs have suggested or established the role of metallophores in the uptake of several other metallic nutrients. Furthermore, these metallophores may influence environmental trace metal fate and transport beyond nutrient acquisition. These discoveries have resulted in a deeper understanding of trace metal geochemistry and its relationship to the cycling of carbon and nitrogen in natural systems. In this review, we provide an overview of the current state of knowledge on the biogeochemistry of metallophores in trace metal acquisition, and explore established and potential metallophore systems.Electronic supplementary material The online version of this article (

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Section: Metallophores and Contaminant Metals: Mobilization Uptake mentioning

confidence: 99%

Metallophores and Trace Metal Biogeochemistry

et al. 2014

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“…The weathering of various sulfides has been evaluated through laboratory experiments and field studies (Acero et al 2007a, b;Belzile et al 2004;Cornejo-Garrido et al 2008;Corkhill et al 2008;Domvile et al 1994;Goh et al 2006;Harmer et al 2006;Hita et al 2006;Janzen et al 2000;Jambor 1994;Jennings et al 2000;Tempel 2003, 2005;Liu et al 2008a;McKibben et al 2008;Rimstidt et al 1994;Schmiermund 2000;Walker et al 2006;Yunmei et al 2004). The principal conclusion is that sulfide minerals differ in their acid production, reaction rate and degree of recalcitrance to weathering.…”

Section: Other Sulfidesmentioning

confidence: 99%

Mine Wastes

Lottermoser

2010

353

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“…An important proposed role of siderophores in soils is promoting the dissolution of iron from low solubility minerals. Desferrioxamine B promotes iron dissolution from a number of different phases, including oxides, hydroxides, phosphates, sulfides, and clay minerals (Cervini-Silva et al, 2012;Cervini-Silva and Sposito, 2002;Cornejo-Garrido et al, 2008;Haack et al, 2008;Liermann et al, 2005;Liermann et al, 2000;Rosenberg and Maurice, 2003;Watteau and Berthelin, 1994;Wolff-Boenisch and Traina, 2007a). The DFOB-promoted dissolution of FeOOH has been shown to proceed by a surface-controlled mechanism, resulting in the formation of a Fe(III)HDFOB + complex (Cocozza et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

Metal oxyhydroxide dissolution as promoted by structurally diverse siderophores and oxalate

Akafia

Harrington

Bargar

et al. 2014

Geochimica et Cosmochimica Acta

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Siderophores, a class of biogenic ligands with high affinities for Fe(III), promote the dissolution of metal ions from sparingly soluble mineral phases. However, most geochemical studies have focused on quantifying the reactivity of DFOB, a model trishydroxamate siderophore. This study utilized three different siderophores, desferrioxamine B, rhizoferrin, and protochelin, with structures that contain the most commonly observed binding moieties of microbial siderophores to examine the siderophore-promoted dissolution rates of FeOOH, CoOOH, and MnOOH in the absence and presence of the ubiquitous low molecular mass organic acid oxalate by utilizing batch dissolution experiments at pH = 5-9. Metal-siderophore complex and total dissolved metal concentrations were monitored for durations of one hour to fourteen days, depending on the metal oxyhydroxide identity and solution pH. The results demonstrate that MnOOH and CoOOH generally dissolve more quickly in the presence of siderophores than FeOOH. Whereas FeOOH dissolved exclusively by a ligand-promoted dissolution mechanism, MnOOH and CoOOH dissolved predominantly by a reductive dissolution mechanism under most experimental conditions. For FeOOH, siderophore-promoted dissolution rates trended with the stability constant of the corresponding aqueous Fe(III) complex. In the presence of oxalate, measured siderophore-promoted dissolution rates were found to increase, decrease, or remain unchanged as compared to the observed rates in single-ligand systems, depending on the pH of the system, the siderophore present, and the identity of the metal oxyhydroxide. Increases in observed dissolution rates in the presence of oxalate were generally greater for FeOOH than for MnOOH or CoOOH. These results elucidate potential dissolution mechanisms of both ferric and non-ferric oxyhydroxide minerals by siderophores in the environment, and may provide further insights into the biological strategies of metal acquisition facilitated by coordinated exudation of low molecular weight organic acids and siderophores.

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Dissolution of arsenopyrite (FeAsS) and galena (PbS) in the presence of desferrioxamine-B at pH 5

Cited by 19 publications

References 44 publications

Metallophores and Trace Metal Biogeochemistry

Metallophores and Trace Metal Biogeochemistry

Mine Wastes

Metal oxyhydroxide dissolution as promoted by structurally diverse siderophores and oxalate

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