Document Detail

Modeling the ozonation of herbicide 2,4-D through a kinetic approach.
MedLine Citation:
PMID:  15013669     Owner:  NLM     Status:  MEDLINE    
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.
W Chu; K H Chan; C Y Kwan
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Chemosphere     Volume:  55     ISSN:  0045-6535     ISO Abbreviation:  Chemosphere     Publication Date:  2004 May 
Date Detail:
Created Date:  2004-03-11     Completed Date:  2004-06-02     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0320657     Medline TA:  Chemosphere     Country:  England    
Other Details:
Languages:  eng     Pagination:  647-52     Citation Subset:  IM    
Department of Civil and Structural Engineering, Research Centre for Environmental Technology and Management, The Hong Kong Polytechnic University, Hunghom, Kowloon, Hong Kong, China.
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MeSH Terms
2,4-Dichlorophenoxyacetic Acid / chemistry*
Herbicides / chemistry*
Hydrogen-Ion Concentration
Models, Chemical*
Ozone / chemistry*
Reg. No./Substance:
0/Herbicides; 10028-15-6/Ozone; 94-75-7/2,4-Dichlorophenoxyacetic Acid

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