Citation: Yong Qing Zhang, Xiao Zhe Du, Wei Lin Huang. Temperature effect on the kinetics of persulfate oxidation of p-chloroaniline[J]. Chinese Chemical Letters, ;2011, 22(3): 358-361. doi: 10.1016/j.cclet.2010.10.015 shu

Temperature effect on the kinetics of persulfate oxidation of p-chloroaniline

a College of Environmental Science and Engineering, South China University of Technology, Guangzhou 510006, China;
b The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou 510006, China;
c Department of Environmental Sciences, Rutgers, The State University of New Jersey, New Brunswick, NJ 08901, USA

Received Date: 7 June 2010

Fund Project: This study was supported financially by the Foundation of Science and Technology Planning Project of Guangdong Province (No. 2007A020100001-13) and the Key Laboratory of Environmental Protection and Eco-Remediation of Guangdong Higher Education Institutions (China).

The kinetics of heat-facilitated persulfate oxidation of p-chloroaniline (PCA) in aqueous solutions was measured at five different temperature conditions and at four different oxidant concentrations. The PCA degradation was found to follow a pseudo-first-order decay model when the persulfate was excessive. The pseudo-first-order rate constants of PCA degradation by persulfate (50 mmol/L) at pH 7.0 are 0.12×10^-4, 0.28×10^-4,0.43×10^-4, 0.83×10^-4, 1.32×10^-4 s^-1 at 10, 20, 30, 40 and 50℃, respectively. Under the above reaction conditions, the reaction has activation energy of 49.97 kJ/mol. The observed rate was found to be function of temperature and oxidant concentration. Raising temperature and increasing persulfate concentration can significantly accelerate the PCA degradation.
- Persulfate,
- p-Chloroaniline,
- Kinetics,
- In situ chemical oxidation,
- Temperature
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