Microbial by-product recovery from regenerable processes for the simultaneous removal of SO/sub 2/ and NO/sub x/ from flue gas: Technical progress report, October 1, 1988--December 31, 1988
The objective of this project is to investigate the reduction of SO/sub 2/ to H/sub 2/S by Desulfovibrio desulfuricans in co-culture with mixed fermentative heterotrophs and the reduction of NO and NO/sub 2/ by Thiobacillus denitrificans. The ultimate goal is the development of a viable process concept whereby a microbial process could impact on the problem of flue gas desulfurization and NO/sub x/ removal. In this reporting period it has been observed that molasses will support the reduction of SO/sub 2/ to H/sub 2/S by working cultures of D. desulfuricans. However, the sulfur contained in the molasses resulted in H/sub 2/S production in excess of that expected based on the SO/sub 2/ feed. The introduction of oxygen into working cultures of D. desulfuricans resulted in a corresponding decrease in the redox potential of the medium. Nitric oxide (NO) was seen to be inhibitory to SO/sub 2/ reduction by D. desulfuricans at inlet gas concentrations in excess of 1500 ppmv. Lastly, ten different non-SRB heterotrophs have been identified from D. desulfuricans working cultures. 17 refs., 6 figs., 5 tabs.
- Research Organization:
- Tulsa Univ., OK (USA). Dept. of Chemical Engineering
- DOE Contract Number:
- FG22-88PC88945
- OSTI ID:
- 6383235
- Report Number(s):
- DOE/PC/88945-T1; ON: DE89007090
- Resource Relation:
- Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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Microbial removal of SO sub 2 and NO sub x from flue gas: Microbial by-product recovery from regenerable processes for the simultaneous removal of SO sub 2 and NO sub x from flue gas
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Related Subjects
20 FOSSIL-FUELED POWER PLANTS
59 BASIC BIOLOGICAL SCIENCES
FLUE GAS
DESULFURIZATION
NITROGEN OXIDES
REMOVAL
SULFUR DIOXIDE
ANAEROBIC CONDITIONS
CULTURE MEDIA
DESULFOVIBRIO
HOT GAS CLEANUP
MICROORGANISMS
MOLASSES
PROGRESS REPORT
RECOVERY
REDOX POTENTIAL
REDUCTION
BACTERIA
CHALCOGENIDES
CHEMICAL REACTIONS
DOCUMENT TYPES
GASEOUS WASTES
NITROGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PURIFICATION
SULFATE-REDUCING BACTERIA
SULFUR COMPOUNDS
SULFUR OXIDES
WASTES
010800* - Coal
Lignite
& Peat- Waste Management
200202 - Fossil-Fueled Power Plants- Waste Management- Noxious Gas & Particulate Emissions
550700 - Microbiology