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Decomposition of Ethylparathion in Aqueous Solution by Ozonation

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Abstract

The decomposition of ethylparathion (o,o-diethyl-o-p-nitrophenylphosporothioate) in aqueous solution by ozonation was studied under various solution pH values and gaseous ozone dosages. The decomposition rate of ethylparathion was independent of solution pH and increased with ozone dosage. The surface tension of aqueous solution was found to be affected by the dissolved ethylparathion. It possibly influenced the oxidation mechanism of ethylparathion by ozonation in aqueous solution. A gas-liquid reaction model described well the transfer and reaction behaviors of reacting species in the system. The quasi-global kinetics based on a simplified consecutive reaction scheme were developed to describe the temporal behavior of ethylparathion decomposition in aqueous solution by ozonation.

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Authors and Affiliations

  1. Department of Chemical Engineering, National Taiwan Institute of Technology, Taipei, 106, Taiwan R.O.C

    Young Ku, Jay-Lin Chang & Yung-Shuen Shen

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  1. Young Ku
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  2. Jay-Lin Chang
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  3. Yung-Shuen Shen
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Ku, Y., Chang, JL. & Shen, YS. Decomposition of Ethylparathion in Aqueous Solution by Ozonation. Water, Air, & Soil Pollution 103, 341–355 (1998). https://doi.org/10.1023/A:1004914318447

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