ISSN print edition: 0366-6352
ISSN electronic edition: 1336-9075
Registr. No.: MK SR 9/7
Photosensitised oxidation of a water pollutant using sulphonated porphyrin
Marta Gmurek and Jacek S. Miller
Faculty of Process and Environmental Engineering, Technical University of Lodz, ul. Wólczańska 213, 90-924 Łódź, Poland
Abstract: Photodegradation of endocrine disrupting butylparaben (BP) in aerated aqueous solutions was studied using 4,4′,4″,4‴-(porphine-5,10,15,20-tetrayl)tetrakis(benzenesulphonic
acid) (TPPS4), as a sensitiser. Influence of various parameters, such as initial sensitiser and BP concentration, pH of the reaction solution
and oxygen content in the reaction solution, on the photosensitised oxidation was examined. It was found that the dominant
pathway of BP degradation occurred in the reaction with molecular singlet oxygen 1O2, i.e. via photosensitised oxidation mechanism of type II. Kinetic parameters of the BP reaction with 1O2 were estimated.
Keywords: butylparaben – 4,4′,4″,4‴-(porphine-5,10,15,20-tetrayl)tetrakis(benzenesulphonic acid) – TPPS4 – photosensitised oxidation – singlet oxygen
Full paper is available at www.springerlink.com.
Chemical Papers 66 (2) 120–128 (2012)