The reduction of selenium(IV) by hydrogen sulfide in aqueous solutions

Pettine, M.; Gennari, Francesca; Campanella, Luigí; Casentini, Barbara; Marani, D.

doi:10.1016/j.gca.2011.12.024

Cited by 45 publications

(28 citation statements)

References 65 publications

(79 reference statements)

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“…2Ϫ can react with the reactive biogenic sulfide abiotically and yields both elemental selenium and sulfur (95,96): …”

Section: Selenite Reductionmentioning

confidence: 99%

“…The combustion of selenium-bearing coals in power plants results in the release of SeO 4 2Ϫ and/or SeO 3 2Ϫ into the flue gas or fly ash (5,6). In natural environments, oxidation of selenium-containing pyrite results in the occurrence of elevated amounts of SeO 4 2Ϫ along with sulfate in acid mine drainage and groundwater (96). Selenium contamination of wetlands of the San Joaquin Valley, CA, is due to the release of agricultural drainage waters containing SeO 4 2Ϫ and/or SeO 3 2Ϫ (106).…”

Section: Microbial Selenium Reduction For Wastewater Treatmentmentioning

confidence: 99%

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Ecology and Biotechnology of Selenium-Respiring Bacteria

Nancharaiah

2015

Microbiol Mol Biol Rev

348

232

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SUMMARY In nature, selenium is actively cycled between oxic and anoxic habitats, and this cycle plays an important role in carbon and nitrogen mineralization through bacterial anaerobic respiration. Selenium-respiring bacteria (SeRB) are found in geographically diverse, pristine or contaminated environments and play a pivotal role in the selenium cycle. Unlike its structural analogues oxygen and sulfur, the chalcogen selenium and its microbial cycling have received much less attention by the scientific community. This review focuses on microorganisms that use selenate and selenite as terminal electron acceptors, in parallel to the well-studied sulfate-reducing bacteria. It overviews the significant advancements made in recent years on the role of SeRB in the biological selenium cycle and their ecological role, phylogenetic characterization, and metabolism, as well as selenium biomineralization mechanisms and environmental biotechnological applications.

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“…2Ϫ can react with the reactive biogenic sulfide abiotically and yields both elemental selenium and sulfur (95,96): …”

Section: Selenite Reductionmentioning

confidence: 99%

Section: Microbial Selenium Reduction For Wastewater Treatmentmentioning

confidence: 99%

Ecology and Biotechnology of Selenium-Respiring Bacteria

Nancharaiah

2015

Microbiol Mol Biol Rev

348

232

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“…As demonstrated by water-column profiles from the Black Sea (Cutter 1982;1992) and experimental evidence of Se(IV) reduction by H2S (Pettine et al 2012), euxinic environments act as sinks for selenium. Organic matter sinking down from the photic zone is not remineralized efficiently and residual oxyanions are reduced nearly quantitatively.…”

Section: (Type I) Organic Deposition and Nearly Quantitative Oxyanionmentioning

confidence: 99%

Selenium Isotopes as a Biogeochemical Proxy in Deep Time

Stüeken

2017

Reviews in Mineralogy and Geochemistry

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“…In suboxic sediments and soils containing Fe(II,III) oxides, a slow abiotic reduction (>1 month) of selenate/selenite to Se 0 is also possible (Charlet et al, 2007). In addition under anoxic conditions an abiotic reaction of selenite with sulfide, which in turn is biotically reduced from sulphate, forming insoluble Se 0 is possible (Pettine et al, 2012). The abiotic process does however not explain the decrease in the retention observed in the sterilized samples under oxic conditions.…”

mentioning

confidence: 93%

“…If merely the abiotic sorption of selenite on the silicate and oxide minerals through inner-sphere complexation would occur, one would expect sterilization to have no effect on the sorption of selenite, which was not the case. Thus, it is possible that in this layer, a proportion of selenite retention is caused by the abiotic association of selenite with the OH groups of silicate and oxide minerals and slow abiotic reduction in the presence of Fe(II,III) oxides or sulfide (Charlet et al, 2007;Pettine et al, 2012), which is accompanied by the microbially catalyzed reduction of selenite in the presence of organic matter.…”

mentioning

confidence: 99%