title: Modeling the ozonation of herbicide 2,4-D through a kinetic approach.
abstract: A quantitative estimation of the ozonation of a herbicide 2,4-D solution through a kinetic approach was studied and modelled. The ozonation of 2,4-D was found to follow a pseudo-first-order kinetic and the degradation rates depended on the initial pH and on the ozone concentration. A model was proposed to quantitatively predict the pseudo-first-order rate constants of the decay of 2,4-D under different ozone concentrations and initial pH levels based on some useful and practical assumptions. The proposed model was able to successfully describe the reaction with insignificant errors; therefore another practical equation was proposed to size the contact tower for 2,4-D ozonation by ozone concentration (overdosed) and initial pH level.
authors.affiliation: Department of Civil and Structural Engineering, Research Centre for Environmental Technology and Management, The Hong Kong Polytechnic University, Hunghom, Kowloon, Hong Kong, China. cewchu@polyu.edu.hk
authors.forename: W
authors.initials: W
authors.lastname: Chu
authors.forename: K H
authors.initials: KH
authors.lastname: Chan
authors.forename: C Y
authors.initials: CY
authors.lastname: Kwan
mesh_terms: D015084:2,4-Dichlorophenoxyacetic Acid / Q000737:chemistry*; D006540:Herbicides / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D008956:Models, Chemical; D010126:Ozone / Q000737:chemistry*
chemical_list: D006540:Herbicides; D015084:2,4-Dichlorophenoxyacetic Acid; D010126:Ozone