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
- Tulsa Univ., OK (USA). Dept. of Chemical Engineering
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, we have shown that the growth of T. denitrificans on thiosulfate is inhibited by partial pressures of CO as low as 58 mm Hg. Upset was indicated by an accumulation of elemental sulfur in the culture medium. The reduction of SO{sub 2} by D. desulfuricans was shown to be inhibited by partial pressures of CO of 25 mm Hg. Inhibition was indicated by accumulation of sulfite in the culture medium and less that stoichiometric production of H{sub 2}S. However, inhibition was reversible even after almost 30 h of exposure to CO. Cultures were tolerant of CO partial pressures less than 12 mm Hg. 17 refs., 19 figs., 9 tabs.
- Research Organization:
- Tulsa Univ., OK (USA). Dept. of Chemical Engineering
- Sponsoring Organization:
- DOE/FE
- DOE Contract Number:
- FG22-88PC88945
- OSTI ID:
- 5724725
- Report Number(s):
- DOE/PC/88945-T2; ON: DE89017644
- Country of Publication:
- United States
- Language:
- English
Similar Records
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
Microbial reduction of SO sub 2 and NO sub x as a means of by-product recovery/disposal from regenerable processes for the desulfurization of flue gas
Related Subjects
20 FOSSIL-FUELED POWER PLANTS
59 BASIC BIOLOGICAL SCIENCES
MICROORGANISMS
BIOCHEMISTRY
NITROGEN OXIDES
REDUCTION
SULFUR DIOXIDE
AIR POLLUTION CONTROL
BACILLUS
BIOCONVERSION
CULTURE MEDIA
DESULFOVIBRIO
FERMENTATION
FLUE GAS
HYDROGEN SULFIDES
MATERIAL BALANCE
NITRIC OXIDE
PROGRESS REPORT
BACTERIA
CHALCOGENIDES
CHEMICAL REACTIONS
CHEMISTRY
CONTROL
DOCUMENT TYPES
GASEOUS WASTES
HYDROGEN COMPOUNDS
NITROGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
POLLUTION CONTROL
SULFATE-REDUCING BACTERIA
SULFIDES
SULFUR COMPOUNDS
SULFUR OXIDES
WASTES
010800* - Coal
Lignite
& Peat- Waste Management
200202 - Fossil-Fueled Power Plants- Waste Management- Noxious Gas & Particulate Emissions
550700 - Microbiology