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Field applications of a bio-trickling filter for the removal of nitrogen oxides from flue gas |
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| Authors: | Ran Jiang Shaobin Huang Jun Yang Kang Deng Zhenghui Liu |
| Institution: | (1) College of Environmental Science and Engineering, South China University of Technology, Higher Education Mega Center, Guangzhou, 510006, People’s Republic of China;(2) State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, 510006, People’s Republic of China |
| Abstract: | A bio-trickling filter (BTF) packed with polyhedral spheres was used to remove nitrogen oxides (NOx) from the flue gas of a coal-fired power plant. The BTF system consistently removed 64–95% of the NOx after start-up and acclimation under dynamic conditions (e.g., 120–240 m3/h flue gas flow rate and inlet 300–900 mg NOx/m3). Scanning electron microscopy of the biofilms that were formed showed a shift in the predominating bacteria. Analyses by PCR-denaturing gradient gel electrophoresis showed that the naturally-selected mixed cultures in the biofilm under a flue gas environment were mainly Klebsiella sp. and Pseudomonas sp. |
| Keywords: | Bio-trickling filter Denitrification Flue gas Nitrogen oxides NOx |
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