Control of Sulfidogenesis Through Bio-oxidation of H₂S Coupled to (per)chlorate Reduction

Journal Article · Fri Apr 04 00:00:00 EDT 2014 · Environmental Microbiology Reports

DOI:https://doi.org/10.1111/1758-2229.12156· OSTI ID:1228974

Gregoire, Patrick ^[1]; Engelbrektson, Anna ^[1]; Hubbard, Christopher G. ^[2]; Metlagel, Zoltan ^[2]; Csencsits, Roseann ^[2]; Auer, Manfred ^[2]; Conrad, Mark E. ^[2]; Thieme, Jurgen ^[3]; Northrup, Paul ^[3]; Coates, John D. ^[1]

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1. Univ. of California, Berkeley, CA (United States)
2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
3. Brookhaven National Lab. (BNL), Upton, NY (United States)

Here, we investigate H₂S attenuation by dissimilatory perchlorate-reducing bacteria (DPRB). All DPRB tested oxidized H₂S coupled to (per)chlorate reduction without sustaining growth. H₂S was preferentially utilized over organic electron donors resulting in an enriched (34S)-elemental sulfur product. Electron microscopy revealed elemental sulfur production in the cytoplasm and on the cell surface of the DPRB Azospira suillum. We also propose a novel hybrid enzymatic-abiotic mechanism for H₂S oxidation similar to that recently proposed for nitrate-dependent Fe(II) oxidation. The results of this study have implications for the control of biosouring and biocorrosion in a range of industrial environments.

• Research Organization: Brookhaven National Laboratory (BNL), Upton, NY (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
• OSTI ID: 1228974
• Report Number(s): BNL--111049-2015-JA
• Journal Information: Environmental Microbiology Reports, Journal Name: Environmental Microbiology Reports Journal Issue: 6 Vol. 6; ISSN 1758-2229
• Publisher: Wiley-Blackwell
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY