A kinetic model of the ozone/hydrogen-peroxide process for treatment of groundwater

Advanced oxidation processes (AOPs) involve the use of hydroxyl radicals (OH) for the treatment of water and hazardous wastes. One method for generating OH radicals is through the accelerated decomposition of ozone. This may be done with hydroxyl ions, ultraviolet radiation or hydrogen peroxide (O;The objective of this work is to evaluate the O;The process model was evaluated for the case of a stirred, semi-batch reactor in three regions determined by the relative feed rate of ozone and peroxide. In region I, where peroxide feed rate is less than the stoichiometric optimum, the rate of reaction is limited by the hydrogen peroxide feed rate. In region II, the ratio of ozone and peroxide feed rate is near the stoichiometric optimum. In region III, the reaction rate is limited by the rate of ozone transfer into the liquid phase, i.e., the higher the ozone content in the feed gas, the larger the reaction rate. The process model suggests that too large a dose of peroxide will have an inhibitive effect on the oxidation rate.;The mass transfer/reaction rate model can be used as a tool for estimating k...