Microbial removal of sulfur dioxide from a gas stream with net oxidation to sulfate

With the continual increase in the utilization of high sulfur fossil fuels (particularly coal and sour petroleum crudes) the release of airborne sulfur dioxide (SO sub(2)) into the environment has become a critical problem. A study has been conducted of the feasibility of utilizing the sulfate reduc...

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Bibliographic Details
Published in:Applied biochemistry and biotechnology 1989-01, Vol.20-21 (1), p.207-220
Main Authors: Dasu, Badri N., Sublette, Kerry L.
Format: Article
Language:English
Subjects:
sulfate
sulphur dioxide
Thiobacillus denitrificans
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Summary:With the continual increase in the utilization of high sulfur fossil fuels (particularly coal and sour petroleum crudes) the release of airborne sulfur dioxide (SO sub(2)) into the environment has become a critical problem. A study has been conducted of the feasibility of utilizing the sulfate reducing bacterium Desulfovibrio desulfuricans) and the chemoautotroph Thiobacillus denitrificans as a basis of a microbial process for the removal of sulfur dioxide from a gas with net oxidation to sulfate. In reactors-in-series, SO sub(2) was reduced to H sub(2)S in the first stage by D. desulfuricans). The H sub(2)S was then stripped with nitrogen and sent to the second stage where it was oxidized to sulfate by T. denitrificans). A sulfur balance demonstrated complete reduction of SO sub(2) to H sub(2)S in the first stage and complete oxidation of H sub(2)S to sulfate in the second stage.
ISSN:0273-2289
1559-0291
DOI:10.1007/BF02936483