KINETICS OF THE OXIDATION OF ORGANIC-SUBSTANCES BY PERSULFATE IN THE PRESENCE OF VARIABLE-VALENCE METAL-IONS

The method of correlating competitive reactions is used to analyze the mechanism of the radical-chain oxidation of organic substances by the persulfate ion in the presence of variable-valence metal ions in an a queous medium in an inert atmosphere. The possible process regimes, th eir mathematical models, the relationships between the reagent concent rations, and the rate constants for the elementary reactions governing the conditions of these regimes, were determined. It is shown that va riations in the reagent concentrations cause regular changes in both t he reaction regimes and the corresponding partial reaction rate orders . The orders with respect to the persulfate ion, an organic substance, and the metal ion range from 1/2 to 3/2, from 0 to 1, and from 0 to 3 /2, respectively. It is possible to separate the key reactions determi ning the mechanism of a specific process, from the overall kinetic sch eme.