Kinetics of Pumice Catalyzed Ozonation of Trace p-Chloronitrobenzene in Aqueous Solution
The kinetics of pumice for decomposition of p-chloronitrobenzene (pCNB) in aqueous solution were investigate. The experiment result indicated that ozonation alone and pumice-catalyzed ozonation of trace pCNB in aqueous solution followed the Pseudo-first-order kinetic model at the reaction temperature of 296 K and the initial pH of 6.86. The rate constant of pumice-catalyzed ozonation increase 149% compared with ozonation alone. In two processes mentioned above, the rate constants of degradation of pCNB were found to decrease with increasing of tert-butyl alcohol. The rate constant of ozonation alone appeared to be decreased 73%, respectively, decreasing 194% in the process of pumice-catalyzed ozonation. Under the conditions of this experiment, ozonation alone and pumice-catalyzed ozonation for degradation of pCNB were primarily oxidized by highly active hydroxyl radicals.
L. Yuan et al., "Kinetics of Pumice Catalyzed Ozonation of Trace p-Chloronitrobenzene in Aqueous Solution", Applied Mechanics and Materials, Vols. 90-93, pp. 2925-2928, 2011