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Effect of Methanethiol Concentration on Sulfur Production in Biological Desulfurization Systems under Haloalkaline Conditions
- Source :
- Environmental Science and Technology 49 (2015) 15, Environmental Science and Technology, 49(15), 9212-9221
- Publication Year :
- 2015
-
Abstract
- Bioremoval of H2S from gas streams became popular in recent years because of high process efficiency and low operational costs. To expand the scope of these processes to gas streams containing volatile organic sulfur compounds, like thiols, it is necessary to provide new insights into their impact on overall biodesulfurization process. Published data on the effect of thiols on biodesulfurization processes are scarce. In this study, we investigated the effect of methanethiol on the selectivity for sulfur production in a bioreactor integrated with a gas absorber. This is the first time that the inhibition of biological sulfur formation by methanethiol is investigated. In our reactor system, inhibition of sulfur production started to occur at a methanethiol loading rate of 0.3 mmol L(-1) d(-1). The experimental results were also described by a mathematical model that includes recent findings on the mode of biomass inhibition by methanethiol. We also found that the negative effect of methanethiol can be mitigated by lowering the salinity of the bioreactor medium. Furthermore, we developed a novel approach to measure the biological activity by sulfide measurements using UV-spectrophotometry. On the basis of this measurement method, it is possible to accurately estimate the unknown kinetic parameters in the mathematical model.
- Subjects :
- Salinity
natron-alkaline conditions
chemistry.chemical_element
Biomass
Methanethiol
Biomass Refinery and Process Dynamics
oxidizing bacteria
Alkalies
Sulfides
sulfide oxidation
chemistry.chemical_compound
Bioreactors
Halogens
soda lakes
Bioreactor
Environmental Chemistry
Organic chemistry
Hydrogen Sulfide
Sulfhydryl Compounds
Solubility
Aqueous solution
WIMEK
Bacteria
solubility
aqueous-solutions
Reproducibility of Results
bioreactors
General Chemistry
Models, Theoretical
Sulfur
Flue-gas desulfurization
Oxygen
Kinetics
chemistry
kinetics
Environmental chemistry
lab-scale
Environmental Technology
polysulfides
Milieutechnologie
Selectivity
Oxidation-Reduction
Subjects
Details
- ISSN :
- 15205851 and 0013936X
- Volume :
- 49
- Issue :
- 15
- Database :
- OpenAIRE
- Journal :
- Environmental sciencetechnology
- Accession number :
- edsair.doi.dedup.....88a88198aec17d8f4bb6df75b04d1820