Journal
WATER RESEARCH
Volume 43, Issue 7, Pages 1924-1934Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.watres.2009.01.021
Keywords
Atrazine; Electro-Fenton; BDD anode; Hydroxyl radicals; Cyanuric acid; Mineralization
Ask authors/readers for more resources
oxidative degradation of atrazine by hydroxyl radicals ((OH)-O-center dot) was studied in aqueous medium. (OH)-O-center dot were formed in situ from electrochemically generating Fenton's reagent by an indirect electrochemical advanced oxidation process. identification and evolution of seven main aromatic metabolites and four short-chain carboxylic acids were performed by using liquid chromatography analyses. Total organic carbon (TOC) and ionic chromatography were used in order to evaluate the mineralization efficiency of treated aqueous solutions. A high mineralization rate of 82% (never reported until now) was obtained. The oxidative degradation of cyanuric acid, the ultimate product of atrazine degradation, was highlighted for the first time. The absolute rate constant of the reaction between atrazine and hydroxyl radicals was evaluated by competition kinetics method as (2.54 +/- 0.22) x 10(9) M-1 s(-1). Considering all oxidation reaction intermediates and end products a general reaction sequence for atrazine degradation by hydroxyl radicals was proposed. (C) 2009 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available