Bacterial Leaching of Metal Sulfides Proceeds by Two Indirect Mechanisms via Thiosulfate or via Polysulfides and Sulfur

Schippers, Axel; Sand, Wolfgang

doi:10.1128/aem.65.1.319-321.1999

Cited by 678 publications

(292 citation statements)

References 22 publications

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“…Its dominance in the subterranean water body within Mynydd Parys, which contained little or no dissolved oxygen (the water at the Gardd Daniel sampling station was aerated by the pumping process), suggests that At. ferrooxidans was metabolizing anaerobically in the subsurface water, possibly using ferric iron (generated at the oxic/ anoxic interface in the water body) as electron acceptor, and polythionates and /or pyrite as electron donors (Das et al, 1996;Schippers & Sand, 1999). The other iron-oxidizing acidophile detected by T-RFLP, 'Ferrimicrobium acidiphilum', can also grow by ferric iron reduction, although this bacterium is heterotrophic, in contrast to both At.…”

Section: Discussionmentioning

confidence: 85%

Geochemistry and microbiology of an impounded subterranean acidic water body at Mynydd Parys, Anglesey, Wales

Coupland

Johnson

2004

Geobiology

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Acidic, metal‐rich water that had accumulated within two abandoned, adjacent copper mines in north Wales was removed to prevent its possible catastrophic release. About 274 000 m3 of acidic (pH ∼2.4) mine water was pumped out of the mines over a 14‐week period. Concentrations of dissolved species (iron, sulfate, aluminium, copper, manganese and zinc) increased as water at lower depths within the mines was accessed. The discharged water flowed through a small wetland area, reaching the sea about 3 km north of the mine site. Analysis of the water at three sampling stations revealed that there was very little removal of aluminium and most of the heavy metals present except (ferrous) iron, which was partially removed as a result of oxidation and hydrolysis of the resulting ferric iron. The dominant bacterium in the subterranean mine water, which was essentially devoid of oxygen, was the iron‐ and sulfur‐oxidizer Acidithiobacillus ferrooxidans. The microbial populations in the pumped mine water were monitored using combined cultivation‐dependent (isolation on solid media) and cultivation‐independent (terminal restriction fragment length polymorphism and clone library) techniques. Other bacteria detected in the mine water included other iron‐oxidizers (Leptospirillum spp., ‘Ferrimicrobium acidiphilum’ and Gallionella‐like organisms) and heterotrophic acidophiles (Acidiphilium, Acidisphaera and Acidobacterium). Archaeal clones were also detected; most of these were related to methanogens. Owing to the absence of an effective remediation strategy, an estimated 7.5 tonnes of copper, 3.1 tonnes of manganese, 14.8 tonnes of zinc and 15.3 tonnes of aluminium was discharged into the Irish Sea as a consequence of the dewatering of the mines.

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Section: Discussionmentioning

confidence: 85%

Geochemistry and microbiology of an impounded subterranean acidic water body at Mynydd Parys, Anglesey, Wales

Coupland

Johnson

2004

Geobiology

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“…With the effect of the oxidant's attack, the sulfur moiety of metal sulfide can be oxidized to solubilize the intermediate products of sulfur. Here, the thiosulfate mechanism can be given as 14 :…”

Section: Metal-microbes Interaction and Integration With Chemical Promentioning

confidence: 99%

Integration of microbial and chemical processing for a sustainable metallurgy

Ilyas

Kim

Lee

2017

J of Chemical Tech & Biotech

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Bioprocessing for the recovery of metal from divergent resources using the microbial strategy has emerged as a green technology in metallurgical operations. The limitations to maintain the ideal condition for bacterial growth with slow kinetics, however, have been considered as major obstacles to bioprocessing being implemented more widely. This can be overcome by integrating the microbes with a chemical processing route. The available reports on recent developments in hybrid bio‐chemical processing of both primary and secondary resources have presented promising results, exhibiting the potential for use in large‐scale metallurgy. In this context, reviewing the factors of the hybrid process would benefit from knowledge acquired in fundamental studies. The present review focuses on bio‐chemical process integration using eco‐friendly design tools for treating the difficult to extract resources and complex spent materials as well. Furthermore, the potential of hybrid technology has been evaluated by establishing an economic model as a case study which encompasses features of economic development, environmental consideration and societal matters to achieve process sustainability. © 2017 Society of Chemical Industry

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“…4A, Fig. S7)where they can likely make quick use of electron donor supplied by reduced vent fluids or from the chemical oxidation of metal sulfides (Schippers and Sand, 1999). Sox genes were identified in white mat bins for Campylobacteraceae and Methylococcaceae, as well as in a red mat bin for an unknown γ-proteobacterium ( Fig.…”

Section: Energy Sourcementioning

confidence: 99%

Metagenomic investigation of the geologically unique Hellenic Volcanic Arc reveals a distinctive ecosystem with unexpected physiology

Oulas

Polymenakou

Seshadri

et al. 2015

Environmental Microbiology

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SummaryHydrothermal vents represent a deep, hot, aphotic biosphere where chemosynthetic primary producers, fuelled by chemicals from Earth's subsurface, form the basis of life. In this study, we examined microbial mats from two distinct volcanic sites within the Hellenic Volcanic Arc (HVA). The HVA is geologically and ecologically unique, with reported emissions of CO2-saturated fluids at temperatures up to 220°C and a notable absence of macrofauna. Metagenomic data reveals highly complex prokaryotic communities composed of chemolithoautotrophs, some methanotrophs, and to our surprise, heterotrophs capable of anaerobic degradation of aromatic hydrocarbons. Our data suggest that aromatic hydrocarbons may indeed be a significant source of carbon in these sites, and instigate additional research into the nature and origin of these compounds in the HVA. Novel physiology was assigned to several uncultured prokaryotic lineages; most notably, a SAR406 representative is attributed with a role in anaerobic hydrocarbon degradation. This dataset, the largest to date from submarine volcanic ecosystems, constitutes a significant resource of novel genes and pathways with potential biotechnological applications.

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Bacterial Leaching of Metal Sulfides Proceeds by Two Indirect Mechanisms via Thiosulfate or via Polysulfides and Sulfur

Cited by 678 publications

References 22 publications

Geochemistry and microbiology of an impounded subterranean acidic water body at Mynydd Parys, Anglesey, Wales

Geochemistry and microbiology of an impounded subterranean acidic water body at Mynydd Parys, Anglesey, Wales

Integration of microbial and chemical processing for a sustainable metallurgy

Metagenomic investigation of the geologically unique Hellenic Volcanic Arc reveals a distinctive ecosystem with unexpected physiology

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