Inhibition of a biological sulfide oxidation under haloalkaline conditions by thiols and diorgano polysulfanes

Journal article (2016)

Authors

Pawel Roman Wetsus, European Centre of Excellence for Sustainable Water Technology, Wageningen University & Research
Joanna Lipińska Wetsus, European Centre of Excellence for Sustainable Water Technology, Warsaw University of Technology
Martijn F M Bijmans Wetsus, European Centre of Excellence for Sustainable Water Technology
Dimitry Y. Sorokin Russian Academy of Sciences, BT/Environmental Biotechnology - AS
Karel J. Keesman Wageningen University & Research, Wetsus, European Centre of Excellence for Sustainable Water Technology
Albert J.H. Janssen Wageningen University & Research, Shell Global Solutions International B.V.
Research Group
BT/Environmental Biotechnology (AS) (TU Delft)
Copyright: © 2016 Pawel Roman, Joanna Lipińska, Martijn F M Bijmans, Dimitry Y. Sorokin, Karel J. Keesman, Albert J H Janssen
DOI
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https://doi.org/10.1016/j.watres.2016.06.003
Thioalkalivibrio Diorgano polysulfanes Kinetic constants Respirometry Sulfide oxidizing bacteria Thiols
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Published Date

15-09-2016

Language

English

Reuse Rights

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Faculty

Applied Sciences

Department

BT/Biotechnologie

Research Group

BT/Environmental Biotechnology

Abstract

A novel approach has been developed for the simultaneous description of reaction kinetics to describe the formation of polysulfide and sulfate anions from the biological oxidation of hydrogen sulfide (H2S) using a quick, sulfide-dependent respiration test. Next to H2S, thiols are commonly present in sour gas streams. We investigated the inhibition mode and the corresponding inhibition constants of six thiols and the corresponding diorgano polysulfanes on the biological oxidation of H2S. A linear relationship was found between the calculated IC50 values and the lipophilicity of the inhibitors. Moreover, a mathematical model was proposed to estimate the biomass activity in the absence and presence of sulfurous inhibitors. The biomass used in the respiration tests originated from a full-scale biodesulfurization reactor. A microbial community analysis of this biomass revealed that two groups of microorganism are abundant, viz. Ectothiorhodospiraceae and Piscirickettsiaceae.