[Oxidation of trichloroethylene in water with permanganate].

ABSTRACT

In order to investigate the removal ability of chlorinated hydrocarbons, the most widely existent pollutant trichloroethylene(TCE) was chosen as the aim pollutant, and the self-made permanganate solution was chosen as oxidant. When the oxidant concentration was 0.276 g x L(-1), the removal rate of TCE reached 100% at 30 degrees C within 30 min. The removal of TCE with permanganate followed the pseudo-first order kinetics with the reaction rate constant K(obs) was 0.1429 min(-1) and the half-life t1/2 was 4.85 min. The reaction rate constant of TCE was increased with increase of KMnO4 concentration and temperature, and almost not affected by pH and ionic strength.