Modeling the ozonation of herbicide 2,4-D through a kinetic approach.
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.
Chu
W
W
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
Chan
K H
KH
Kwan
C Y
CY
D015084:2,4-Dichlorophenoxyacetic Acid / Q000737:chemistry*; D006540:Herbicides / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D008956:Models, Chemical; D010126:Ozone / Q000737:chemistry*
D006540:Herbicides; D015084:2,4-Dichlorophenoxyacetic Acid; D010126:Ozone