Comparison of Three Bed Packings for the Biological Removal of Nitric Oxide from Gas Streams

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Environmental and health issues coupled with increasingly stringent nitrogen oxide (NOx) emission standards indicates a need for the development of alternative low-cost technologies for the removal of NOx from gas streams. Biological NOx conversion offers promise as a novel treatment method. Thermophilic denitrifying bacteria indigenous to composts and soils are capable of converting NOx to environmentally benign nitrogen via a dissimilatory reductive pathway. The present study compares the performance of three bioreactor packing materials (compost, perlite, and biofoam) for the removal of nitric oxide (NO) from a simulated wet-scrubbed combustion gas. Although all three materials performed well (>85% NO removal) ... continued below

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Lee, Brady Douglas; Flanagan, W. P.; Barnes, Charles Marshall; Barrett, Karen B.; Zaccardi, Larry Bryan & Apel, William Arnold October 1, 2000.

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Environmental and health issues coupled with increasingly stringent nitrogen oxide (NOx) emission standards indicates a need for the development of alternative low-cost technologies for the removal of NOx from gas streams. Biological NOx conversion offers promise as a novel treatment method. Thermophilic denitrifying bacteria indigenous to composts and soils are capable of converting NOx to environmentally benign nitrogen via a dissimilatory reductive pathway. The present study compares the performance of three bioreactor packing materials (compost, perlite, and biofoam) for the removal of nitric oxide (NO) from a simulated wet-scrubbed combustion gas. Although all three materials performed well (>85% NO removal) at residence times of 70-80 seconds, the compost performed better than the other materials at shorter residence times (13-44 seconds). The perlite and biofoam materials, however, both offer long-term thermal stability and lower pressure drop compared with compost. The feasibility of biological NOx conversion processes will depend on the combined factors of NOx removal ability and pressure drop. The results presented here suggest that the compost, perlite and biofoam systems, subject to further optimization, offer potential for the biological removal of NOx from gas streams.

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  • 2000 USC-TRG Conference on Biofiltration,Los Angeles, CA,10/19/2000,10/20/2000

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  • Report No.: INEEL/CON-00-00612
  • Grant Number: DE-AC07-99ID-13727
  • Office of Scientific & Technical Information Report Number: 910873
  • Archival Resource Key: ark:/67531/metadc882877

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  • October 1, 2000

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  • Sept. 22, 2016, 2:13 a.m.

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  • Dec. 9, 2016, 3:34 p.m.

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Lee, Brady Douglas; Flanagan, W. P.; Barnes, Charles Marshall; Barrett, Karen B.; Zaccardi, Larry Bryan & Apel, William Arnold. Comparison of Three Bed Packings for the Biological Removal of Nitric Oxide from Gas Streams, article, October 1, 2000; [Idaho Falls, Idaho]. (digital.library.unt.edu/ark:/67531/metadc882877/: accessed October 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.