Absorptions of NO by neutral and alkaline solutions of KMnO4 were performed in this study to clarify the reaction kinetics. The experiments were mainly carried out under 50 °C, which is the common operating temperature for wet scrubbers. According to the assumption that the absorption of NO was developed under the fast pseudo-mth reaction regime, which is verified in the experiments, the absorption rate of NO into KMnO4 solutions is found to be negative half-order dependent on PNO and first-order dependent on [KMnO4]. The addition of NaOH into the solutions of KMnO4 would increase the absorption rate of NO. The absorption rate of NO at 25 °C is lower than that of 50 °C. In the ranges of this study, the absorption rate of NO would not change by changing the gas flow rate and O2 concentration. NO2- is the dominate ion in the liquid phase for this study. However, the [NO3-]/[NO2-] ratio increases with the increasing NaOH concentration.
|Number of pages||27|
|Journal||Journal of Environmental Science and Health - Part A Toxic/Hazardous Substances and Environmental Engineering|
|Publication status||Published - 1998 Jan 1|
All Science Journal Classification (ASJC) codes
- Environmental Engineering