Arsenic release from gold mine rocks mediated by the activity of indigenous bacteria

Drewniak, Łukasz; Matlakowska, Renata; Rewerski, Bartosz; Skłodowska, Aleksandra

doi:10.1016/j.hydromet.2010.02.025

Cited by 42 publications

(43 citation statements)

References 16 publications

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“…Several pure cultures of bacterial strains (Rhine et al, 2006), as well as microbial consortia (Battaglia-Brunet et al, 2002) able to transform As (III) to As(V) have been isolated. For some of them, biogeochemical function in the environment has been described (Connon et al, 2008;Drewniak et al, 2010) and/or a practical application in bioremediation has been proposed (e.g. Simeonova et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Structural and functional genomics of plasmid pSinA of Sinorhizobium sp. M14 encoding genes for the arsenite oxidation and arsenic resistance

Drewniak

Dziewit

Ciezkowska

et al. 2013

Journal of Biotechnology

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Plasmid pSinA of Sinorhizobium sp. M14 (Alphaproteobacteria) is the first described, natural, self-transferable plasmid harboring a complete set of genes for oxidation of arsenite. Removal of this plasmid from cells of the host strain caused the loss of resistance to arsenic and heavy metals (Cd, Co, Zn and Hg) and abolished the ability to grow on minimal salt medium supplemented with sodium arsenite as the sole energy source. Plasmid pSinA was introduced into other representatives of Alphaproteobacteria which resulted in acquisition of new abilities concerning arsenic resistance and oxidation, as well as heavy metals resistance. Microcosm experiments revealed that plasmid pSinA can also be transferred via conjugation into other indigenous bacteria from microbial community of As-contaminated soils, including representatives of Alpha-and Gammaproteobacteria. Analysis of "natural" transconjugants showed that pSinA is functional (expresses arsenite oxidase) and is stably maintained in their cells after approximately 60 generations of growth under nonselective conditions. This work clearly demonstrates that pSinA is a self-transferable, broad-host-range plasmid, which plays an important role in horizontal transfer of arsenic metabolism genes.

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Section: Introductionmentioning

confidence: 99%

Structural and functional genomics of plasmid pSinA of Sinorhizobium sp. M14 encoding genes for the arsenite oxidation and arsenic resistance

Drewniak

Dziewit

Ciezkowska

et al. 2013

Journal of Biotechnology

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“…For the first one, 3.94 µg/L of total dissolved As was detected after 7 days of incubation at 22 • C under aerobic conditions, whereas sterile control only showed 0.73 µg/L of total dissolved As [125]. The medium was slightly alkaline, cell densities were 10 6 cells/mL and mineral samples weighed 5 g. Drewniak et al [125] postulated that arsenate released from the arsenite oxidation by strain M14 was coprecipitated with ferric ions (released from arsenopyrite at neutral pH), producing a dark orange scorodite-like precipitate on the surface. Likewise, Pseudomonas OS8 and OS20 exhibit a high capacity for arsenate reduction [124] and, in Fe-limiting conditions, produce different siderophores such as hydroxamate-type (OS8) and catechol-type (OS20) [125].…”

Section: Bioleaching Pre-treatment Releasing Arsenicmentioning

confidence: 94%

“…Also, the presence of siderophores supports the idea of its correlation with As resistance and the increase of the As and ferric iron mobilization from insoluble compounds. Drewniak et al [125] characterized the bacterial strains involved in the As release process. They found that the dissimilatory arsenate reducers such as Shewanella sp.…”

Section: Bioleaching Pre-treatment Releasing Arsenicmentioning

confidence: 99%

“…O23S and Aeromonas sp. O23A play a significant role in direct As mobilization [124,125]. In addition, siderophores produced by As-resistant Pseudomonas spp.…”

Section: Bioleaching Pre-treatment Releasing Arsenicmentioning

confidence: 99%

“…The medium was slightly alkaline, cell densities were 10 6 cells/mL and mineral samples weighed 5 g. Drewniak et al [125] postulated that arsenate released from the arsenite oxidation by strain M14 was coprecipitated with ferric ions (released from arsenopyrite at neutral pH), producing a dark orange scorodite-like precipitate on the surface. Likewise, Pseudomonas OS8 and OS20 exhibit a high capacity for arsenate reduction [124] and, in Fe-limiting conditions, produce different siderophores such as hydroxamate-type (OS8) and catechol-type (OS20) [125]. Siderophores bind ferric ions in complexes that get into the bacterial cell by active transport mechanisms.…”

Section: Bioleaching Pre-treatment Releasing Arsenicmentioning

confidence: 99%

See 2 more Smart Citations

Bioleaching of Arsenic-Bearing Copper Ores

2018

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Abstract:World copper (Cu) production has been strongly affected by arsenic (As) content, because As-rich Cu concentrates are not desirable in the metal foundries. When As-rich Cu concentrates are processed by smelting they release As as volatile compounds into the atmosphere and inside furnaces, generating serious risks to human health. In recent years, exports of Cu concentrates are being penalized for the increasingly high As content of the ores, causing economies that depend on the Cu market to be seriously harmed by this impurity. In the last few decades, biohydrometallurgy has begun to replace the traditional Cu sulfide processing, however bioleaching processes for As-bearing Cu ores which contain enargite are still in the development stage. Researchers have not yet made successful progress in enargite bioleaching using typical mesophilic and thermophilic bacteria that oxidize sulfide. New approaches based on direct oxidative/reductive dissolution of As from enargite could result in significant contributions to Cu biohydrometallurgy. Thus, As-rich Cu concentrates could be pre-treated by bioleaching, replacing current technologies like roasting, pressure leaching and alkaline leaching by selective biological arsenite oxidation or arsenate reduction. In this article, we review the As problem in Cu mining, conventional technologies, the biohydrometallurgy approach, and As bioleaching as a treatment alternative.

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Microbial Cycling of Arsenic in the Aquifers of Bengal Delta Plains (BDP)

Ghosh

Bhadury

2018

Advances in Soil Microbiology: Recent Trends and Future Prospects

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Arsenic release from gold mine rocks mediated by the activity of indigenous bacteria

Cited by 42 publications

References 16 publications

Structural and functional genomics of plasmid pSinA of Sinorhizobium sp. M14 encoding genes for the arsenite oxidation and arsenic resistance

Structural and functional genomics of plasmid pSinA of Sinorhizobium sp. M14 encoding genes for the arsenite oxidation and arsenic resistance

Bioleaching of Arsenic-Bearing Copper Ores

Microbial Cycling of Arsenic in the Aquifers of Bengal Delta Plains (BDP)

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