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The absorption of NO in aqueous solutions of KMnO4and H2SO4was carried out in a stirred tank reactor under atmosphere pressure. The results indicated that the absorption process was under a fast pseudo-mth reaction regime. The reaction between NO and aqueous solutions of KMnO4/H2SO4was found to be first-order with respect both to NO and to KMnO4. The addition of H2SO4to KMnO4solutions increased the absorption rate of NO and increasing reaction temperature was also favorable to the absorption of NO. [ABSTRACT FROM AUTHOR]

NO is a major air pollutant from coal-fired power plants. A combined removal of SO2and NO is a prospective process. In this paper, the absorption kinetics of NO into weakly acidic NaClO solution was studied in a stirred tank reactor. It was proven that the absorption process occurred under the fast pseudo-mth reaction regime, and the reaction was found to be first-order with respect to both NO and NaClO. When the initial pH value of NaClO solution is 5.5, it has the best performance for NO absorption. The frequency factor and the average activation energy of this reaction were 7.96 × 108 m3/(mol s) and 28.15 kJ/mol, respectively. The absorption rate of NO increased with increasing reaction temperature. [ABSTRACT FROM PUBLISHER]

The absorption process of NO into KMnO4/(NH4)2CO3 solutions was studied in a stirred tank reactor. The experimental results showed that the reaction process was a fast pseudo-m reaction. The reaction between NO and aqueous solutions of KMnO4/(NH4)2CO3 was found to be first-order with respect to NO and with respect to KMnO4. The frequency factor and the average activation energy of this reaction were 2.3 × 109 m3/(mol s) and 36.77 kJ/mol, respectively. © 2012 American Institute of Chemical Engineers Environ Prog, 32: 564-568, 2013 [ABSTRACT FROM AUTHOR]

Absorption experiments of NO2 from simulated flue gas into aqueous (NH4)2SO3 solution were performed in a stirred tank reactor under atmosphere pressure. As can be seen from the experimental results, the absorption rate of NO2 into (NH4)2SO3 solution increases as the (NH4)2SO3 concentration increases from 0.01 to 0.06 mol/L. As the concentration of (NH4)2SO3 solution exceeds 0.06 mol/L, the absorption process becomes gas-film controlled. And the absorption rate increases with increasing NO2 inlet concentration but decreases with increasing reaction temperature. Compared with Na2SO3 solution, (NH4)2SO3 solution has higher NO2 absorption rate. © 2012 American Institute of Chemical Engineers Environ Prog, 32: 465-469, 2013 [ABSTRACT FROM AUTHOR]

Abstract: The absorption kinetics of NO into aqueous solutions of NaClO3/NaOH was investigated under different experimental conditions in a stirred tank reactor. It is proven that the absorption process is a fast pseudo-mth reaction. The reaction was found to be second-order with respect to NO and first-order with respect to NaClO3. The frequency factor and average activation energy of this reaction were 2.696×106 m3/(mols) and 13.88kJ/mol, respectively. The addition of NaOH to solutions of NaClO3 decreased the absorption rate of NO. And the absorption rate of NO increased with increasing reaction temperature. In this study, the flue gas flow rate almost had little effect on the absorption of NO. [ABSTRACT FROM AUTHOR]