Kinetics of Pumice Catalyzed Ozonation of Trace p-Chloronitrobenzene in Aqueous Solution

Abstract:

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.

• Periodical: Applied Mechanics and Materials (Volumes 90-93)
• Pages: 2925-2928
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.90-93.2925
• Online since: September 2011
• Authors: Lei Yuan, Ji Min Shen, Zhong Lin Chen
• Keywords: Kinetic, Ozonation, P-Chloronitrobenzene, Pumice

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