Reduction of nitric oxide to elemental nitrogen byThiobacillus Denitrificans |
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Authors: | Lee Kuoh H Sublette Kerry L |
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Institution: | 1.Center for Environmental Research and Technology, University of Tulsa, 600 S. College Aue., 74104, Tulsa, OK ; |
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Abstract: | A need exists for new technology for the disposal of concentrated NOx streams obtained from certain regenerable, dry scrubbing processes, such as the NOXSO process, and the removal and disposal
of NOx from more dilute gas streams produced by nitric acid plants. It has been demonstrated that the facultative anaerobe and autotroph,
Thiobacillus denitrificans, may be cultured anaerobically in batch reactors using NO (g) as a terminal electron acceptor.
Thiosulfate served as an energy source, CO2 (g) as a carbon source, and ammonium ion as a source of reduced nitrogen. The growth of T.denitrificans was indicated by depletion of thiosulfate and ammonium ion and the accumulation of biomass. The feed gas consisted of 5000
ppmv NO, 5%, CO2, and balance nitrogen. The NO concentration in the outlet gas was typically 200 ppmv. |
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Keywords: | Index Entries" target="_blank">Index Entries NOx CO2 thiosulfate T denitrificans |
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