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Inhibition of microbiological sulfide oxidation by methanethiol and dimethyl polysulfides at natron-alkaline conditions

To avoid problems related to the discharge of sulfidic spent caustics, a biotechnological process is developed for the treatment of gases containing both hydrogen sulfide and methanethiol. The process operates at natron-alkaline conditions (>1 mol L(−1) of sodium- and potassium carbonates and a p...

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Autores principales: van den Bosch, Pim L. F., de Graaff, Marco, Fortuny-Picornell, Marc, van Leerdam, Robin C., Janssen, Albert J. H.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Berlin Heidelberg 2009
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7419365/
https://www.ncbi.nlm.nih.gov/pubmed/19333598
http://dx.doi.org/10.1007/s00253-009-1951-6
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author van den Bosch, Pim L. F.
de Graaff, Marco
Fortuny-Picornell, Marc
van Leerdam, Robin C.
Janssen, Albert J. H.
author_facet van den Bosch, Pim L. F.
de Graaff, Marco
Fortuny-Picornell, Marc
van Leerdam, Robin C.
Janssen, Albert J. H.
author_sort van den Bosch, Pim L. F.
collection PubMed
description To avoid problems related to the discharge of sulfidic spent caustics, a biotechnological process is developed for the treatment of gases containing both hydrogen sulfide and methanethiol. The process operates at natron-alkaline conditions (>1 mol L(−1) of sodium- and potassium carbonates and a pH of 8.5–10) to enable the treatment of gases with a high partial CO(2) pressure. In the process, methanethiol reacts with biologically produced sulfur particles to form a complex mixture predominantly consisting of inorganic polysulfides, dimethyl disulfide (DMDS), and dimethyl trisulfide (DMTS). The effect of these organic sulfur compounds on the biological oxidation of sulfide to elemental sulfur was studied with natron-alkaliphilic bacteria belonging to the genus Thioalkalivibrio. Biological oxidation rates were reduced by 50% at 0.05 mM methanethiol, while for DMDS and DMTS, this was estimated to occur at 1.5 and 1.0 mM, respectively. The inhibiting effect of methanethiol on biological sulfide oxidation diminished due to its reaction with biologically produced sulfur particles. This reaction increases the feasibility of biotechnological treatment of gases containing both hydrogen sulfide and methanethiol at natron-alkaline conditions.
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spelling pubmed-74193652020-08-18 Inhibition of microbiological sulfide oxidation by methanethiol and dimethyl polysulfides at natron-alkaline conditions van den Bosch, Pim L. F. de Graaff, Marco Fortuny-Picornell, Marc van Leerdam, Robin C. Janssen, Albert J. H. Appl Microbiol Biotechnol Environmental Biotechnology To avoid problems related to the discharge of sulfidic spent caustics, a biotechnological process is developed for the treatment of gases containing both hydrogen sulfide and methanethiol. The process operates at natron-alkaline conditions (>1 mol L(−1) of sodium- and potassium carbonates and a pH of 8.5–10) to enable the treatment of gases with a high partial CO(2) pressure. In the process, methanethiol reacts with biologically produced sulfur particles to form a complex mixture predominantly consisting of inorganic polysulfides, dimethyl disulfide (DMDS), and dimethyl trisulfide (DMTS). The effect of these organic sulfur compounds on the biological oxidation of sulfide to elemental sulfur was studied with natron-alkaliphilic bacteria belonging to the genus Thioalkalivibrio. Biological oxidation rates were reduced by 50% at 0.05 mM methanethiol, while for DMDS and DMTS, this was estimated to occur at 1.5 and 1.0 mM, respectively. The inhibiting effect of methanethiol on biological sulfide oxidation diminished due to its reaction with biologically produced sulfur particles. This reaction increases the feasibility of biotechnological treatment of gases containing both hydrogen sulfide and methanethiol at natron-alkaline conditions. Springer Berlin Heidelberg 2009-06-01 2009 /pmc/articles/PMC7419365/ /pubmed/19333598 http://dx.doi.org/10.1007/s00253-009-1951-6 Text en © The Author(s) 2009 Open AccessThis is an open access article distributed under the terms of the Creative Commons Attribution Noncommercial License (https://creativecommons.org/licenses/by-nc/2.0), which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited.
spellingShingle Environmental Biotechnology
van den Bosch, Pim L. F.
de Graaff, Marco
Fortuny-Picornell, Marc
van Leerdam, Robin C.
Janssen, Albert J. H.
Inhibition of microbiological sulfide oxidation by methanethiol and dimethyl polysulfides at natron-alkaline conditions
title Inhibition of microbiological sulfide oxidation by methanethiol and dimethyl polysulfides at natron-alkaline conditions
title_full Inhibition of microbiological sulfide oxidation by methanethiol and dimethyl polysulfides at natron-alkaline conditions
title_fullStr Inhibition of microbiological sulfide oxidation by methanethiol and dimethyl polysulfides at natron-alkaline conditions
title_full_unstemmed Inhibition of microbiological sulfide oxidation by methanethiol and dimethyl polysulfides at natron-alkaline conditions
title_short Inhibition of microbiological sulfide oxidation by methanethiol and dimethyl polysulfides at natron-alkaline conditions
title_sort inhibition of microbiological sulfide oxidation by methanethiol and dimethyl polysulfides at natron-alkaline conditions
topic Environmental Biotechnology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7419365/
https://www.ncbi.nlm.nih.gov/pubmed/19333598
http://dx.doi.org/10.1007/s00253-009-1951-6
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