Denitrification and nitric oxide reduction in an aerobic toluene-treating biofilter

Autor:	Daniel P. Y. Chang, Kate M. Scow, Kerry A. Kinney, Chris A. du Plessis, Edward D. Schroeder
Rok vydání:	1998
Předmět:	Denitrification Chemistry Bioengineering Biodegradation Applied Microbiology and Biotechnology Toluene Denitrifying bacteria chemistry.chemical_compound Environmental chemistry Biofilter Bioreactor Aeration NOx Biotechnology
Zdroj:	Biotechnology and Bioengineering. 58:408-415
ISSN:	1097-0290 0006-3592
DOI:	10.1002/(sici)1097-0290(19980520)58:4<408::aid-bit8>3.0.co;2-n
Popis:	The presence of significant denitrification activity in an aerobic toluene-treating biofilter was demonstrated under batch and flow-through conditions. N2O concentrations of 9.2 ppmv were produced by denitrifying bacteria in the presence of 15% acetylene, in a flow-through system with a bulk gas phase O2 concentration of >17%. The carbon source for denitrification was not toluene but a byproduct or metabolite of toluene catabolism. Denitrification conditions were successfully used for the reduction of 60 ppmv nitric oxide to 15 ppmv at a flow rate of 3 L min−1 (EBRT of 3 min) in a fully aerated, 17% v/v O2 (superficially aerobic) biofilter. Higher NO removal efficiency (97%) was obtained by increasing the toluene supply to the biofilter. © 1998 John Wiley & Sons, Inc. Biotechnol Bioeng 58:408-415, 1998.
Databáze:	OpenAIRE
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