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摘要
Efficiency in chemical degradation of isopropyl ethylthionocarbamate (also referred as Z-200) using Fenton reagents was studied in this paper. A Box-Behnken design method with response surface methodology (RSM) was used to investigate the influence of individual and interaction of operating variables on removal efficiency with the aim of recognizing the optimum operating conditions. The mechanism of oxidation degradation was further examined by Fourier transform-infrared spectroscopy, and gas chromatography coupled with mass spectrometry. The optimum conditions for chemical degradation efficiency of Z-200 were obtained as Fe2+ 146 mg/L, H2O2 98 mg/L, and initial pH 6.7, achieving a removal efficiency of 92.76% in a 2.5 h reaction time. Finally, a simple kinetic analysis was carried out based on the degradation of Z-200 at different concentrations. Results showed that the kinetics of the Z-200 degradation rate followed pseudo-first-order equation in Fenton process. This study effectively demonstrated the usage and advantages of RSM for the modeling and prediction of process response. It also can be revealed that the advanced oxidation process of Fenton is an effective and efficient technology for the degradation of Z-200 in aqueous solution.
- 出版日期2018-10
- 单位中南大学; 郑州大学; 中国地质大学（北京）
