ENVR 40 |
| Chengqiang Wu, Runye Zhu, Haijie Zhang, and Jianmeng Chen. |
| Denitrification performance of nitric oxide (NO) removal was investigated in a rotating drum biofilter (RDB) using glucose as carbon source at different drum-rotating speed and empty bed residence time (EBRT). Drum rotation played a positive role in the denitrification process at a drum-rotating speed lower than 0.5 r min-1, but had a negative role at a higher speed of 0.5 to 3.0 r min-1. At a certain feed loading rate, NO removal efficiency decreased with the decrease of EBRT and inlet NO concentration. At an EBRT of 130 s and a drum-rotating speed of 0.5 r min-1, NO removal efficiency of 99.7 % was obtained with inlet NO concentration at 1125 ppm. In this study, mass transfer is the limiting step for NO removal and how to increase mass transfer rate is the key factor to obtain optimal denitrificaion performance in RDB. |
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Environmental Occurrence, Fate and Transport of Chemicals and Nanomaterials
8:30 AM-12:05 PM, Monday, 27 March 2006 Georgia World Congress Center -- B217, Oral
Division of Environmental Chemistry |