HYDROLYSIS OF OCTACHLORODIPROPYL ETHER IN AQUEOUS SOLUTIONS

作者：Shi, Yan-hong; Liao, Min; Kiyota, Hiromasa; Hua, Ri-mao; Wu, Xiangwei; Tang, Jun; Cao, Hai-qun

来源：Fresenius Environmental Bulletin, 2015, 24(8): 2534-2539.

• Octachlorodipropyl ether (OCDPE)
• Hydrolysis
• pH
• Half-life

The hydrolysis of octachlorodipropyl ether (OCDPE) was investigated in aqueous solutions under a variety of pH conditions (pH 3.0-11.0), temperatures (10-35 degrees C) and with the initial concentrations of OCDPE (1.0-100 mg L-1). OCDPE hydrolysis was found to obey the first-order model and similar rate constant values ranging from 0.0361 +/- 0.0006 to 0.0406 +/- 0.0008 day(-1) were obtained at different initial concentration ranging from 1.0 to 100 mg/L. The rates of OCDPE degradation were pH dependent, with increasing k values being associated with higher pH values. At pH 11.0 OCDPE degradation was >60-fold faster than at pH 3.0. The rate constant of OCDPE hydrolysis increases with the increases of the initial concentration and temperature. When the temperature is increased from 10 degrees C to 35 degrees C, the rate constant of hydrolysis rises 3-fold. The effect of temperature on the rate of OCDPE hydrolysis was characterized using the Arrhenius equation with an estimated energy of activation of 32.01 kJ mol(-1). The hydrolysis products of OCDPE are shown to be 1,1,2-trichloro-3-[(2',3',3'-trichloroallyl)oxy] prop-1-ene and 1,1,2- trichloro-3-(2',3',3',3'- tetrachloropropoxy)prop-1-ene. The possible OCDPE hydrolysis pathway of dehydrochlorination is proposed.

• 出版日期2015
• 单位宿州大学; 安徽农业大学