Effect of Reduced Sulfur Species on Chemolithoautotrophic Pyrite Oxidation with Nitrate. Issue 1 (2nd January 2019)

• Record Type: Journal Article
• Authors: Yan, Ruiwen; Kappler, Andreas; Muehe, E. Marie; Knorr, Klaus-Holger; Horn, Marcus A.; Poser, Alexander; Lohmayer, Regina; Peiffer, Stefan
• Is Part Of: Geomicrobiology journal. Volume 36:Issue 1(2019)
• Page Start: 19
• Page End: 29
• Publication Date: 2019-01-02
• Subjects: Pyrite -- nitrate -- reduced sulfur -- reduced Fe -- chemolithoautotrophic oxidation -- nitrate-reducing bacterium; Geomicrobiology -- Periodicals; Biogeochemistry -- Periodicals; 579
• DOI: 10.1080/01490451.2018.1489915
• Languages: English
• ISSNs: 0149-0451

Abstract

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 FeS2 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.