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Bosch, J. ; Lee, K.Y.* ; Jordan, G.* ; Kim, K.W.* ; Meckenstock, R.U.

Anaerobic, nitrate-dependent oxidation of pyrite nanoparticles by Thiobacillus denitrificans.

Environ. Sci. Technol. 46, 2095-2101 (2012)
DOI PMC
Open Access Green möglich sobald Postprint bei der ZB eingereicht worden ist.
Pyrite is a key mineral in the global biogeochemical cycles of sulfur and iron, yet its anaerobic microbial oxidation has eluded geochemists and microbiologists for decades. Recent reports indicated that anaerobic oxidation of pyrite is occurring, but the mechanism remains unclear. Here, we provide evidence for the capability of Thiobacillus denitrificans to anaerobically oxidize a putatively nanosized pyrite particle fraction with nitrate as electron acceptor. Nanosized pyrite was readily oxidized to ferric iron and sulfate with a rate of 10.1 μM h(-1). The mass balance of pyrite oxidation and nitrate reduction revealed a closed recovery of the electrons. This substantiates a further "missing lithotrophy" in the global cycles of sulfur and iron and emphasizes the high reactivity of nanominerals in the environment.
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
Schlagwörter MICROBIAL OXIDATION; SULFIDE OXIDATION; WATER CHEMISTRY; SANDY AQUIFER; IRON MOUNTAIN; MINE DRAINAGE; GROUNDWATER; REDUCTION; BACTERIAL; SULFUR
Sprache englisch
Veröffentlichungsjahr 2012
HGF-Berichtsjahr 2012
ISSN (print) / ISBN 0013-936X
e-ISSN 1520-5851
Quellenangaben Band: 46, Heft: 4, Seiten: 2095-2101 Artikelnummer: , Supplement: ,
Verlag ACS
Verlagsort Washington, DC
Begutachtungsstatus Peer reviewed
POF Topic(s) 20403 - Sustainable Water Management
Forschungsfeld(er) Environmental Sciences
PSP-Element(e) G-504300-004
PubMed ID 22142180
Scopus ID 84863292692
Erfassungsdatum 2012-03-01