Abstract
In this study, the rates of degradation of organic compounds by several AOPs (H 2O 2/UV, Fe(III)/UV, Fe(III)/H 2O 2/UV, Fe(II)/H 2O 2 and Fe(III)/H 2O 2) have been compared. Experiments were carried out at pH ≈ 3 (perchloric acid / sodium perchlorate solutions) and with UV reactors equipped with a low-pressure mercury vapour lamp (emission at 253.7 run). The data obtained with atrazine ([Atrazine] o = 100 μg/L) showed that the rate of degradation of atrazine in very dilute aqueous solution is much more rapid with Fe(III)/UV than with H 2O 2/UV. Photo-Fenton process (Fe(III)/H 2O 2/UV) was found to be more efficient than H 2O 2/UV and Fe(II)/H 2O 2 for the mineralization of acetone ([Acetone] o = 1 mM).
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