Premium
Photocatalytic degradation of diuron [3‐(3,4‐dichlorophenyl)‐1,1‐dimethylurea] on the layer of TiO 2 particles in the batch mode plate film reactor
Author(s) -
Krýsová Hana,
Krýsa Josef,
Macounová Kateřina,
Jirkovský Jaromír
Publication year - 1998
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/(sici)1097-4660(199806)72:2<169::aid-jctb882>3.0.co;2-i
Subject(s) - photocatalysis , aqueous solution , degradation (telecommunications) , irradiation , layer (electronics) , chemistry , batch reactor , ultraviolet , adsorption , volumetric flow rate , nuclear chemistry , photochemistry , analytical chemistry (journal) , materials science , chromatography , catalysis , organic chemistry , optoelectronics , physics , thermodynamics , telecommunications , computer science , nuclear physics
Abstract The photocatalytic degradation of diuron in aqueous solution on TiO 2 layer 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 0·8–8·0×10 −5 mol dm −3 ) and on the light intensity (0·8–2·7×10 −9 einstein cm −2 s −1 ) but independence 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‐dichlorophenyl)‐1‐methyl‐1‐formylurea and 3‐(3,4‐dichlorophenyl)‐1‐methylurea] and secondary [3‐(3,4‐dichlorophenyl)‐1‐formylurea and 3,4‐dichlorophenylurea] products. © 1998 SCI