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Anaerobic, Nitrate-Dependent Oxidation of Pyrite Nanoparticles by Thiobacillus denitrificans

Title data

Bosch, Julian ; Lee, Keun-Young ; Jordan, Guntram ; Kim, Kyoung-Woong ; Meckenstock, Rainer U.:
Anaerobic, Nitrate-Dependent Oxidation of Pyrite Nanoparticles by Thiobacillus denitrificans.
In: Environmental Science & Technology. Vol. 46 (2012) Issue 4 . - pp. 2095-2101.
ISSN 0013-936X
DOI: https://doi.org/10.1021/es2022329

Abstract in another language

Pyrite is a key mineral in the global biogeochemical cyclesof sulfur and iron, yet its anaerobic microbial oxidation has eludedgeochemists and microbiologists for decades. Recent reports indicated thatanaerobic oxidation of pyrite is occurring, but the mechanism remainsunclear. Here, we provide evidence for the capability of Thiobacillusdenitrif icans to anaerobically oxidize a putatively nanosized pyrite particlefraction with nitrate as electron acceptor. Nanosized pyrite was readilyoxidized to ferric iron and sulfate with a rate of 10.1 μM h−1. The massbalance of pyrite oxidation and nitrate reduction revealed a closedrecovery of the electrons. This substantiates a further “missinglithotrophy” in the global cycles of sulfur and iron and emphasizes thehigh reactivity of nanominerals in the environment.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER109777
Institutions of the University: Research Institutions > Research Centres > Bayreuth Center of Ecology and Environmental Research- BayCEER
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: Yes
DDC Subjects: 500 Science
Date Deposited: 07 Aug 2015 06:59
Last Modified: 07 Aug 2015 06:59
URI: https://eref.uni-bayreuth.de/id/eprint/17661