2010
DOI: 10.1016/j.gca.2010.04.008
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Ferrous phosphate surface precipitates resulting from the reduction of intragrain 6-line ferrihydrite by Shewanella oneidensis MR-1

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Cited by 27 publications
(18 citation statements)
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References 65 publications
(84 reference statements)
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“…Under anoxic conditions, vivianite is very stable (K sp = 10 À36 ; (Nriagu, 1972)) and can exert significant control over the geochemical cycles of Fe and P. Vivianite has also been reported as an end product of bacterial Fe(III) reduction Zachara et al, 1998;Roh et al, 2007;Peretyazhko et al, 2010). To our knowledge, the role of biogenic vivianite in abiotic uranium reduction and subsequent immobilization has not been investigated.…”
Section: Introductionmentioning
confidence: 99%
“…Under anoxic conditions, vivianite is very stable (K sp = 10 À36 ; (Nriagu, 1972)) and can exert significant control over the geochemical cycles of Fe and P. Vivianite has also been reported as an end product of bacterial Fe(III) reduction Zachara et al, 1998;Roh et al, 2007;Peretyazhko et al, 2010). To our knowledge, the role of biogenic vivianite in abiotic uranium reduction and subsequent immobilization has not been investigated.…”
Section: Introductionmentioning
confidence: 99%
“…Ferrihydrite (Fe 5 O 6 (OH) 9 ) was prepared by titrating 0.5 M NaOH into a FeCl 3 solution until a final pH approaching 7.0, followed by dialysis as described by Atkinson et al [29]. Analysis of transmission electron microscopy (TEM) and X-ray diffraction confirmed the precipitate as ferrihydrite, which was kept in suspension until use in the experiment.…”
Section: Preparation Of Materialsmentioning
confidence: 99%
“…In soils and freshwater sediments, the fate and mobility of phosphorus may be controlled by iron geochemistry, through sorption and desorption, co-precipitation and dissolution with both ferrous (Fe(II)) and ferric (Fe(III)) minerals. Whilst sorption of phosphorous to ferric phases such as ferrihydrite (Fe 5 O 6 (OH) 9 ) tends to occur under aerobic conditions, ferrous iron phases are among the most important components to react with phosphate in anaerobic environments. During the development of anaerobic soil and sediment environments, the concentration of aqueous phosphate may increase, due to the reductive dissolution of ferri-phosphate phases [2].…”
Section: Introductionmentioning
confidence: 99%
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“…Geobacter metallireducens, Lovley & Phillips, 1988; Shewanella oneidensis, Myers & Nealson, 1988), scientific interest in microbial Fe(III) reduction has increased tremendously. This Fe cycling also links the carbon cycle to a number of important environmental processes such as retention of nutrients and mobilization or immobilization of toxic metals (Lovley, 1991;Islam et al, 2004;Peretyazhko et al, 2010). This Fe cycling also links the carbon cycle to a number of important environmental processes such as retention of nutrients and mobilization or immobilization of toxic metals (Lovley, 1991;Islam et al, 2004;Peretyazhko et al, 2010).…”
Section: Introductionmentioning
confidence: 98%