Effect of Reduced Sulfur Species on Chemolithoautotrophic Pyrite Oxidation with Nitrate

authored by
Ruiwen Yan, Andreas Kappler, E. Marie Muehe, Klaus-Holger Knorr, Marcus Andreas Horn, Alexander Poser, Regina Lohmayer, Stefan Peiffer
Abstract

We compared the response at neutral pH of some denitrifiers to different electron donors such as reduced sulfur (pyrite, S(0), and marcasite) and reduced Fe. Chemolithoautotrophic oxidation of pyrite with nitrate as electron acceptor was not possible when the pyrite was in a pure crystalline form, whereas oxidation of synthesized FeS

2 of low crystallinity and of S(0) with nitrate as electron acceptor was possible. Neither nitrite nor sulfate was formed when Fe(II)-oxidizing strain Acidovorax sp. BoFeN1 was tested. Microbial reduction of nitrate appears to be induced via S oxidation but not via Fe oxidation.

Organisation(s)
Institute of Microbiology
External Organisation(s)
University of Bayreuth
University of Tübingen
Stanford University
University of Münster
Helmholtz Centre for Environmental Research (UFZ)
Type
Article
Journal
Geomicrobiology journal
Volume
36
Pages
19-29
No. of pages
11
ISSN
0149-0451
Publication date
02.01.2019
Publication status
Published
Peer reviewed
Yes
ASJC Scopus subject areas
Microbiology, Environmental Chemistry, Environmental Science(all), Earth and Planetary Sciences (miscellaneous)
Electronic version(s)
https://figshare.com/articles/journal_contribution/Effect_of_Reduced_Sulfur_Species_on_Chemolithoautotrophic_Pyrite_Oxidation_with_Nitrate/7387235 (Access: Open)
https://doi.org/10.1080/01490451.2018.1489915 (Access: Closed)