title: Kinetics study on photochemical oxidation of polyacrylamide by ozone combined with hydrogen peroxide and ultraviolet radiation.
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 O3, H2O2 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.
authors.affiliation: School of Municipal and Environmental Engineering, Harbin Institute of Technology, China. rgmhit@126.com
authors.forename: Guang-meng
authors.initials: GM
authors.lastname: Ren
authors.forename: De-zhi
authors.initials: DZ
authors.lastname: Sun
authors.forename: Jong Shik
authors.initials: JS
authors.lastname: Chung
mesh_terms: D000180:Acrylic Resins / Q000737:chemistry*; D001673:Biodegradation, Environmental; D004305:Dose-Response Relationship, Drug; D004307:Dose-Response Relationship, Radiation; D006861:Hydrogen Peroxide / Q000737:chemistry*; D007700:Kinetics; D010083:Oxidants, Photochemical / Q000737:chemistry; D010084:Oxidation-Reduction; D010126:Ozone / Q000737:chemistry*; D010777:Photochemistry / Q000379:methods*; D014466:Ultraviolet Rays; D000099166:Polyacrylamides
chemical_list: D000180:Acrylic Resins; D006861:Hydrogen Peroxide; D010083:Oxidants, Photochemical; D010126:Ozone; D000099166:Polyacrylamides