PHOTOCATALYTIC DEGRADATION OF DIURON [3-(3,4-DICHLOROPHENYL)-1,1-DIMETHYLUREA] ON THE LAYER OF TIO2 PARTICLES IN THE BATCH MODE PLATE FILM REACTOR

Authors
KRYSOVA H KRYSA J MACOUNOVA K JIRKOVSKY J
Citation
H. Krysova et al., PHOTOCATALYTIC DEGRADATION OF DIURON [3-(3,4-DICHLOROPHENYL)-1,1-DIMETHYLUREA] ON THE LAYER OF TIO2 PARTICLES IN THE BATCH MODE PLATE FILM REACTOR, Journal of chemical technology and biotechnology, 72(2), 1998, pp. 169-175
Citations number
8
Categorie Soggetti
Engineering, Chemical",Chemistry,"Biothechnology & Applied Migrobiology
Journal title
Journal of chemical technology and biotechnology → ACNP
ISSN journal
02682575
Volume
72
Issue
2
Year of publication
1998
Pages
169 - 175
Database
ISI
SICI code
0268-2575(1998)72:2<169:PDOD[>2.0.ZU;2-F
Abstract
The photocatalytic degradation of diuron in aqueous solution on TiO2 l ayer of a batch mode plate reactor irradiated with ultraviolet sun-bed tubes was investigated. Dependence of the reaction rate on the diuron concentration (in the range of 0.8-8.0 x 10(-5) mol dm(-3)) and on th e light intensity (0.8-2.7 x 10(-9) einstein cm(-2) s(-1)) but indepen dence on the flow rate (2.5-3.6 dm(3) min-(1)) were found. A reaction scheme was proposed following the main identified primary [3(3,4-dichl orophenyl)-1-methyl-1-formylurea and 3-(3,4-dichlorophenyl)-1-methylur ea] and secondary [3-( 3,4-dichlorophenyl)-1-formylurea and 3,4-dichlo rophenylurea] products. (C) 1998 SCI.