分解反応モデルを用いたテトラクロロエチレンによる汚染地下水の評価

概要

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Biotransformation process of tetrachloroethylene (PCE) to trichloroethylene (TCE) and successively to cis-1,2-dichloroethylene (cis-DCE) in static microcosms under anaerobic condition can be expressed by a consecutive first-order rate expression. This model implies the rules concerning stoichiometric relations and kinetics derived from the theory, and the rules enable us to evaluate the behavior of these three compounds. In this study, the data of groundwater contaminated with PCE at a study area in Yokohama city were analyzed using this kinetic model. The analytical method presented in this paper was of use for evaluating various remedial schemes and for estimating the position of pollutant source and the degree of degradation.