The biological nitric oxide (NO) reduction rate in a rotating drum biofilter (RDB) mainly depends on the mass transfer between the gas and liquid phase because of the poor solubility of NO. This work, aimed to facilitate the gas-liquid (GL) mass transfer of NO in RDB, the FeII(EDTA) was used to capture NO and porous drum was employed to increase the eddy current effect of the system. The denitrification rate of GL-RDB was stabilized at about 95% during the long-term operation. A dynamic model of GL-RDB was established to optimize the denitrification performance of this innovative RDB. Experimental results revealed that the developed model well described NO removal in GL-RDB. Model analysis also showed that the rotational speed and inlet NO concentration were the critical parameters in determining of the RBD performance. This work may provide fundamental theory for the further study of GL-RDB.
ASJC Scopus subject areas
- Chemical Engineering(all)
- Industrial and Manufacturing Engineering