DDVPのオゾン処理における細胞毒性変化の解析と予測  [in Japanese] Analysis and Prediction of Changes in Cytotoxicity during Ozonation of DDVP-containg Water  [in Japanese]

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Author(s)

Abstract

In order to establish a methodology for the optimization of a water treatment process in terms of its total toxicity reduction, we proposed a simple method for describing changes in the concentrations of a toxic chemical and of its derivatives, and changes in the total toxicity derived from these chemicals. Dichlorvos (DDVP), an organophosphate, was selected as a model chemical, and the toxicity of the treated water was evaluated by the growth inhibition of cultured human cells. In a series of experiments, although original DDVP was rapidly degraded, its oxidation intermediate (DDVP' and DDVP'') was produced and strongly affected the total toxicity of the treated water. Changes in the concentrations of these chemicals and the total toxicity were well described by a simple numerical model. By using this model, we predicted the effects of ozone concentration, pH, and ozonation time on the total toxicity reduction during ozonation of DDVP at the level of the environmental standard. Such a methodology proposed in this work would be useful for choosing an better treatment process and also in optimizing the running conditions.

Journal

  • Journal of Japan Society on Water Environment

    Journal of Japan Society on Water Environment 24(4), 225-232, 2001-04-10

    Japan Society on Water Environment

References:  23

Codes

  • NII Article ID (NAID)
    10008004816
  • NII NACSIS-CAT ID (NCID)
    AN10372439
  • Text Lang
    JPN
  • Article Type
    ART
  • ISSN
    09168958
  • NDL Article ID
    5739340
  • NDL Source Classification
    ZN5(科学技術--建設工学・建設業--都市工学・衛生工学)
  • NDL Call No.
    Z16-1045
  • Data Source
    CJP  NDL  J-STAGE 
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