Photodegradation of chlorbromuron, atrazine, and alachlor in aqueous systems under solar irradiation

Homogeneous and heterogeneous aqueous systems of the herbicides of chlorbromuron, atrazine, and alachlor were irradiated with a nonexpensive solar irradiation using a photoreactor with recirculation. Photodegradation of these herbicides occurred in both aqueous systems; however the presence of TiO 2...

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Bibliographic Details
Published inInternational Journal of Photoenergy Vol. 2006; pp. 1 - 6
Main Authors Bahena, Cristina Lizama, Martínez, Susana Silva
Format Journal Article
LanguageEnglish
Published John Wiley & Sons, Inc 01.01.2006
Hindawi Limited
Subjects
Alachlor
Atrazine
Chemical properties
Photochemical research
Solar radiation
Mexico
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Summary:Homogeneous and heterogeneous aqueous systems of the herbicides of chlorbromuron, atrazine, and alachlor were irradiated with a nonexpensive solar irradiation using a photoreactor with recirculation. Photodegradation of these herbicides occurred in both aqueous systems; however the presence of TiO 2 clearly accelerated the degradation of the three herbicides in comparison with direct photolysis. Degradation was followed by measuring the chemical oxygen demand (COD) as a function of reaction time for each aqueous system. Over 90% of COD abatement in the heterogeneous aqueous system was obtained in a short time period showing that mineralization of chlorbromuron, atrazine, and alachlor was achieved.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:1110-662X
1687-529X
DOI:10.1155/IJP/2006/81808