Abstract:
:The photocatalytic degradation of many chlorinated organic compounds by semiconductor particles, has been widely recognised as a promising method of water and wastewater treatment process. In the present work the photocatalytic transformation of 2,4-D and MCPA in aqueous solution with 2 g l(-1) suspended TiO2 is demonstrated. The formation of several intermediates has been observed. The photodegradation rate increases with increasing pH. The photocatalytic transformation of 2,4-D and MCPA over TiO2 in solution containing hydrogen peroxide has been also studied. H2O, accelerated significantly the reaction rate of 2, 4-D and MCPA. The partial inhibition by ethanol is attributed to the scavenging of OH radicals involved in the first step of the reaction. Finally, from these results, a mechanism is proposed. This photocatalytic method has good potential for application on a large scale.
journal_name
Environ Technoljournal_title
Environmental technologyauthors
Djebbar K,Zertal A,Sehili Tdoi
10.1080/09593332708618732subject
Has Abstractpub_date
2006-11-01 00:00:00pages
1191-7issue
11eissn
0959-3330issn
1479-487Xjournal_volume
27pub_type
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