Kinetics study on photochemical oxidation of polyacrylamide by ozone combined with hydrogen peroxide and ultraviolet radiation

An investigation on the process of ozone combined with hydrogen peroxi de and ultraviolet radiation has been carried out in order to establish the kine tics for photochemical oxidation of polyacrylamide (PAM) in aqueous solution. Ef fects of operating parame- ters, including initial PAM concentration, dosages of ozone and hydrogen peroxide, UV radiation and pH value on the photochemical oxi dation of PAM, have been studied. There was an increase in photochemical oxidati on rate of PAM with increasing of dosages of O3, H2O2 and ultraviolet radiation. Upon increasing of the initial PAM concentration, the photochemical oxidation r ate of PAM decreased. Slight effect of pH value on the photochemical oxidation r ate of PAM was observed in the experiments. The kinetics equation for the photoc hemical oxidation of PAM by the system has been established.