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环境工程学报 2007
Heterotrophic biofilters for oxidation of nitric oxide
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Abstract:
An investigation of the basis of the improved biofilter performance was carried out through the experiments, which were performed as a batch microcosm study to determine the enhancement of NO oxidation with the addition of organic substrates, and to determine the role of the organic matter in improving NO oxidation. The experiments compared gas-phase NO removal by a biofilter column seeded with autotrophic/heterotrophic organisms. The effect of empty bed residence time (EBRT) on the removal efficiency was investigated. At high glucose loadings, the mixed culture column demonstrated a remarkable increase in biotic removal of NO, about 95% in a 3-minute EBRT.