Oxidative degradation of 1,5-naphthalenedisulfonic acid in aqueous solutions by UV-photolysis in the absence and presence of H2O2.
Sulfonated aromatic pollutants such as 1,5-naphthalenedisulfonic acid (NDS or Armstrong's acid) are persistent compounds and thus resist environmental breakdown and microbial treatment. This study investigated the photo-oxidative degradation of such a persistent polar pollutant in the absence and presence of H2O2. The degradation of aqueous NDS solutions by photolysis was found to be efficient only in the presence of H2O2. The combination of UV irradiation and H2O2 leads to progressive degradation of NDS, which is converted into new, more biodegradable and non-toxic species.
Dipartimento di Scienze dell'Ambiente e della Vita, Università del Piemonte Orientale "Amedeo Avogadro", Viale Teresa Michel 11, 15121 Alessandria, Italy.
Mauro
M
Ravera
Davide
D
Musso
Fabio
F
Gosetti
Claudio
C
Cassino
Elisa
E
Gamalero
Domenico
D
Osella
D001673:Biodegradation, Environmental; D004785:Environmental Pollutants / Q000032:analysis / Q000737:chemistry* / Q000378:metabolism; D052918:Environmental Restoration and Remediation / Q000379:methods*; D006861:Hydrogen Peroxide / Q000737:chemistry*; D009282:Naphthalenesulfonates / Q000032:analysis / Q000737:chemistry* / Q000378:metabolism; D010084:Oxidation-Reduction; D010782:Photolysis; D011551:Pseudomonas fluorescens / Q000378:metabolism; D014466:Ultraviolet Rays
D004785:Environmental Pollutants; D009282:Naphthalenesulfonates; D006861:Hydrogen Peroxide; C549769:1,5-naphthalenedisulfonic acid