Oxidation of trichloroethylene in water with permanganate

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·L~(-1),)the removal rate of TCE reached 100% at 30℃ within 30 min.The removal of TCE with permanganate followed the pseudo-first order kinetics with the reaction rate constant K_(obs) was(0.142?9) min~(-1)and the half-life t_(1/2) was 4.85 min.The reaction rate constant of TCE was increased with increase of KMnO_4 concentration and temperature,and almost not affected by pH and ionic strength.