PMID: 11329715May 2, 2001Paper

Microbially catalyzed nitrate-dependent oxidation of biogenic solid-phase Fe(II) compounds

Environmental Science & Technology
Karrie A WeberEric E Roden

Abstract

The potential for microbially catalyzed NO3(-)-dependent oxidation of solid-phase Fe(II) compounds was examined using a previously described autotrophic, denitrifying, Fe(II)-oxidizing enrichment culture. The following solid-phase Fe(II)-bearing minerals were considered: microbially reduced synthetic goethite, two different end products of microbially hydrous ferric oxide (HFO) reduction (biogenic Fe3O4 and biogenic FeCO3), chemically precipitated FeCO3, and two microbially reduced iron(III) oxide-rich subsoils. The microbially reduced goethite, subsoils, and chemically precipitated FeCO3 were subject to rapid NO3(-)-dependent Fe(II) oxidation. Significant oxidation of biogenic Fe3O4 was observed. Very little biogenic FeCO3 was oxidized. No reduction of NO3- or oxidation of Fe(II) occurred in pasteurized cultures. The molar ratio of NO3- reduced to Fe(II) oxidized in cultures containing chemically precipitated FeCO3, and one of the microbially reduced subsoils approximated the theoretical stoichiometry of 0.2:1. However, molar ratios obtained for oxidation of microbially reduced goethite, the other subsoil, and the HFO reduction end products did not agree with this theoretical value. These discrepancies may be related to hetero...Continue Reading

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Citations

Feb 25, 2005·Biodegradation·Joshua D ShroutGene F Parkin
Nov 28, 2012·World Journal of Microbiology & Biotechnology·Anirban Chakraborty, Flynn Picardal
Apr 8, 2014·Journal of Colloid and Interface Science·Tongxu LiuFangbai Li
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Sep 19, 2006·Nature Reviews. Microbiology·Karrie A WeberJohn D Coates
Jul 12, 2011·Applied and Environmental Microbiology·Aaron J CobyEric E Roden
May 15, 2013·Applied and Environmental Microbiology·Enoma O OmoregieJonathan R Lloyd
Jun 12, 2012·Applied and Environmental Microbiology·Evgenya ShelobolinaEric Roden
Sep 15, 2009·Applied and Environmental Microbiology·Marco Blöthe, Eric E Roden
Dec 3, 2008·Applied and Environmental Microbiology·Marco Blöthe, Eric E Roden
Oct 18, 2011·Applied and Environmental Microbiology·Anirban ChakrabortyFlynn Picardal
Jun 6, 2003·Applied and Environmental Microbiology·D Craig CooperAaron J Coby
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Dec 14, 2005·Environmental Microbiology·Karrie A WeberEric E Roden
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Feb 21, 2016·Applied and Environmental Microbiology·Shaomei HeEric E Roden
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Apr 15, 2018·Applied and Environmental Microbiology·Robert B MillerJohn M Senko

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