Hydrolysis of octachlorodipropyl ether in aqueous solutions

Yan Hong Shi, Min Liao, Hiromasa Kiyota, Ri Mao Hua, Xiangwei Wu, Jun Tang, Hai Qun Cao

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Abstract

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 °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 °C to 35 °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-l-ene and 1, 1,2-trichloro-3-(2',3',3',3'-tetrachloropropoxy)prop-l-ene. The possible OCDPE hydrolysis pathway of dehydrochlorination is proposed.

Original languageEnglish
Pages (from-to)2534-2539
Number of pages6
JournalFresenius Environmental Bulletin
Volume24
Issue number8
Publication statusPublished - 2015

Keywords

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

ASJC Scopus subject areas

  • Pollution
  • Waste Management and Disposal
  • Environmental Chemistry

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  • Cite this

    Shi, Y. H., Liao, M., Kiyota, H., Hua, R. M., Wu, X., Tang, J., & Cao, H. Q. (2015). Hydrolysis of octachlorodipropyl ether in aqueous solutions. Fresenius Environmental Bulletin, 24(8), 2534-2539.