Evaluation of Reaction Rate Constants of Oh Radicals With Organic Compounds in Diluted Aqueous Solutions Using H_2O_2/UV Process

摘要

The degradation of model organic compounds (4-chloronitrobenzene, 1,1,2-trichloroethane and 1,1,2,2-tetrachloroethane) in phosphate-buffered water by the H_2O_2/UV oxidizing system has been examiend. The reuslts showed the effects of the oxidant dose, of the pH and of the bicarbonate alkalinity on the efficiency of hte H_2O_2/UV process for the oxidation of organic compounds. The second-order rate constants for hte reaction fo hydroxyl radicals with 1,1,2-trichloroethane and 1,1,2,2-tetrachloroethane could be evaluated by applying a kinetic model.