(1) Microbial removal of SO sub 2 and NO sub x from flue gas; (2) Microbial by-product recovery from regenerable processes for the simultaneous removal of SO sub 2 and NO sub x from flue gas

Sublette, K L; Suciu, D

Title: (1) Microbial removal of SO sub 2 and NO sub x from flue gas; (2) 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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Abstract

The objective of this project has been to investigate the reduction of SO{sub 2} to H{sub 2}S by Desulfovibrio desulfuricans in coculture with mixed fermentative heterotrophs and the reduction of NO to elemental nitrogen by Thiobacillus denitrificans. The ultimate goal has been 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. It was 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. We demonstrated the reduction of nitric oxide (NO) to elemental nitrogen (N{sub 2}) by Thiobacillus denitrificans. We also investigated the simultaneous removal of SO{sub 2} and NO from a gas by contact of the gas with either D. desulfuricans and T. denitrificans reactors-in-series or in co-culture. An economic evaluation of the microbial reduction of SO{sub 2} was performed comparing the microbial process to a conventional catalytic SO{sub 2} hydrogenation (with H{sub 2} generation from methane). Microbial SO{sub 2} reduction and conventional SO{sub 2} hydrogenation were estimated to have similar costsmore »« less

Authors:

Sublette, K L ^[1]; Suciu, D ^[2]

Tulsa Univ., OK (USA). Dept. of Chemical Engineering
Lummus Crest, Inc., Bloomfield, NJ (USA). Engineering Development Center

Publication Date:: Thu Feb 01 00:00:00 EST 1990

Research Org.:: Tulsa Univ., OK (USA). Dept. of Chemical Engineering

Sponsoring Org.:: DOE/FE

OSTI Identifier:: 6205590

Report Number(s):: DOE/PC/88945-T4
ON: DE91008248

DOE Contract Number:: FG22-88PC88945

Resource Type:: Technical Report

Country of Publication:: United States

Language:: English

Subject:: 20 FOSSIL-FUELED POWER PLANTS; 01 COAL, LIGNITE, AND PEAT; 59 BASIC BIOLOGICAL SCIENCES; FLUE GAS; DENITRIFICATION; DESULFURIZATION; NITROGEN OXIDES; REDUCTION; SULFUR DIOXIDE; BACILLUS; BACTERIA; BIODEGRADATION; BY-PRODUCTS; COMBINED SOXNOX PROCESSES; CULTURE MEDIA; DESULFOVIBRIO; ECONOMIC ANALYSIS; FERMENTATION; HOT GAS CLEANUP; HYDROGEN SULFIDES; MOLASSES; PROGRESS REPORT; REDOX POTENTIAL; SULFATE-REDUCING BACTERIA; BIOCONVERSION; CHALCOGENIDES; CHEMICAL REACTIONS; DECOMPOSITION; DOCUMENT TYPES; ECONOMICS; GASEOUS WASTES; HYDROGEN COMPOUNDS; MICROORGANISMS; NITROGEN COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PURIFICATION; SULFIDES; SULFUR COMPOUNDS; SULFUR OXIDES; WASTES; 200202* - Fossil-Fueled Power Plants- Waste Management- Noxious Gas & Particulate Emissions; 010800 - Coal, Lignite, & Peat- Waste Management; 550700 - Microbiology

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                    Sublette, K L, and Suciu, D. (1) Microbial removal of SO sub 2 and NO sub x from flue gas; (2) Microbial by-product recovery from regenerable processes for the simultaneous removal of SO sub 2 and NO sub x from flue gas.  United States: N. p., 1990. 
        Web.

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                    Sublette, K L, & Suciu, D. (1) Microbial removal of SO sub 2 and NO sub x from flue gas; (2) Microbial by-product recovery from regenerable processes for the simultaneous removal of SO sub 2 and NO sub x from flue gas.  United States.

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                    Sublette, K L, and Suciu, D. 1990.  
        "(1) Microbial removal of SO sub 2 and NO sub x from flue gas; (2) Microbial by-product recovery from regenerable processes for the simultaneous removal of SO sub 2 and NO sub x from flue gas".  United States.

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@article{osti_6205590,

  title        = {(1) Microbial removal of SO sub 2 and NO sub x from flue gas; (2) Microbial by-product recovery from regenerable processes for the simultaneous removal of SO sub 2 and NO sub x from flue gas},

  author       = {Sublette, K L and Suciu, D},

  abstractNote = {The objective of this project has been to investigate the reduction of SO{sub 2} to H{sub 2}S by Desulfovibrio desulfuricans in coculture with mixed fermentative heterotrophs and the reduction of NO to elemental nitrogen by Thiobacillus denitrificans. The ultimate goal has been 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. It was 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. We demonstrated the reduction of nitric oxide (NO) to elemental nitrogen (N{sub 2}) by Thiobacillus denitrificans. We also investigated the simultaneous removal of SO{sub 2} and NO from a gas by contact of the gas with either D. desulfuricans and T. denitrificans reactors-in-series or in co-culture. An economic evaluation of the microbial reduction of SO{sub 2} was performed comparing the microbial process to a conventional catalytic SO{sub 2} hydrogenation (with H{sub 2} generation from methane). Microbial SO{sub 2} reduction and conventional SO{sub 2} hydrogenation were estimated to have similar costs in terms of capital investment. However, annual operating costs for the microbial process were much higher than the conventional process, due primarily to the cost of raw materials. 52 refs., 38 figs., 20 tabs.},

  doi          = {},

  url          = {https://www.osti.gov/biblio/6205590},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Thu Feb 01 00:00:00 EST 1990},

  month        = {Thu Feb 01 00:00:00 EST 1990}

}

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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

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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/submore »« less
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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 elementalmore »« less
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With the continual increase in the utilization of high sulfur and high nitrogen containing fossil fuels, the release of airborne pollutants into the environment has become a critical problem. The fuel sulfur is converted to SO{sub 2} during combustion. Fuel nitrogen and a fraction of the nitrogen from the combustion air are converted to nitric oxide and nitrogen dioxide, NO{sub x}. For the past five years Combustion Engineering (now Asea Brown Boveri or ABB) and, since 1986, the University of Tulsa (TU) have been investigating the oxidation of H{sub 2}S by the facultatively anaerobic and autotrophic bacterium Thiobacillus denitrificans andmore »« less
https://doi.org/10.2172/10153072

Full Text Available
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

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For the past five years Combustion Engineering (CE) and, since 1986, the University of Tulsa (TU) have been investigating the oxidation of H{sub 2}S by the facultatively anaerobic and autotrophic bacterium Thiobacillus denitrificans and have developed a process concept for the microbial removal of H{sub 2}S from a gas stream. In 1987/88 we demonstrated that the sulfate reducing bacterium, Desulfovibrio desulfuricans, can be grown anaerobically in mixed, septic cultures using SO{sub 2} and glucose. The simultaneous removal of SO{sub 2} and NO by D. desulfuricans and T. denitrifications co-cultures and cultures in series was demonstrated but is not feasible atmore »« less
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