Abstract: In a semi-batch reactor,the ozonation kinetics of aqueous carbendazim was explored.The reaction order relative to both dissolved ozone and carbendazim belonged to a first-order type.Thus,the ozonation of aqueous carbendazim followed a quasi-second order reaction.Furthermore,the reaction rate constant was given as k=1.11譭xp (-48864/RT) (L·mol-1·s-1),the apparent activation energy was about 48.86 kJ·mol-1.