The oxidation of metol (N-methyl-p-aminophenol) in aqueous solution by UV/H2O2 photolysis

Authors
Andreozzi, R Caprio, V Insola, A Marotta, R
Citation
R. Andreozzi et al., The oxidation of metol (N-methyl-p-aminophenol) in aqueous solution by UV/H2O2 photolysis, WATER RES, 34(2), 2000, pp. 463-472
Citations number
15
Categorie Soggetti
Environment/Ecology
Journal title
WATER RESEARCH
ISSN journal
00431354 → ACNP
Volume
34
Issue
2
Year of publication
2000
Pages
463 - 472
Database
ISI
SICI code
0043-1354(200002)34:2<463:TOOM(I>2.0.ZU;2-V
Abstract
The oxidation of metol (N-methyl-p-aminophenol) in aqueous solution by mean s of a UV/H2O2 system has been studied in the pH range 3.0-9.0. The results of the present investigation indicate that the pH, H2O2 and substrate conc entration and oxygen presence significantly influence the system behaviour. Toxicity tests show that the H2O2 photolytic process is capable of reducin g the toxicity of metol aqueous solutions. The kinetic constant of the atta ck of HO radicals to the substrate has been also estimated through the adop tion of a simplified model. (C) 1999 Elsevier Science Ltd. All rights reser ved.