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

Article type: Research Article

Authors: REN, Guang-meng | SUN, De-zhi | CHUNG, Jong Shik^;

Affiliations: School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China | Department of Chemical Engineering, Pohang University of Science and Technology, Pohang 790-784, South Korea

Note: [] Corresponding author. E-mail: [email protected]

Abstract: An investigation on the process of ozone combined with hydrogen peroxide and ultraviolet radiation has been carried out in order to establish the kinetics for photochemical oxidation of polyacrylamide (PAM) in aqueous solution. Effects of operating parameters, including initial PAM concentration, dosages of ozone and hydrogen peroxide, UV radiation and pH value on the photochemical oxidation of PAM, have been studied. There was an increase in photochemical oxidation rate of PAM with increasing of dosages of O_3, H_2O_2 and ultraviolet radiation. Upon increasing of the initial PAM concentration, the photochemical oxidation rate of PAM decreased. Slight effect of pH value on the photochemical oxidation rate of PAM was observed in the experiments. The kinetics equation for the photochemical oxidation of PAM by the system has been established.

Keywords: photochemical oxidation, polyacrylamide, kinetics, ozone/hydrogen peroxide/ultraviolet radiation

Journal: Journal of Environmental Sciences, vol. 18, no. 4, pp. 660-664, 2006