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International Journal of Photoenergy
Volume 2007, Article ID 53853, 8 pages
Research Article

Selective Photocatalytic Oxidation of Steroid Estrogens in the Presence of Copollutants in the Sanitary Fraction of Domestic Sewage

Department of Chemical Technology, Lappeenranta University of Technology, P.O. Box 20, Lappeenranta 53851, Finland

Received 21 February 2007; Revised 22 May 2007; Accepted 5 June 2007

Academic Editor: Leonardo Palmisano

Copyright © 2007 Tatyana Karpova et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The photocatalytic oxidation (PCO) of the steroid estrogens (SEs), β-estradiol, and 17α-ethynylestradiol, competitive with some constituent compounds of the sanitary fraction of domestic sewage, was studied. The copollutants, urea, and saccharose, present in concentrations exceeding those of the SEs by a factor of a hundred to thousands, appeared to exert a weaker influence to the photocatalytic degradation of the SEs than was expected. The removal of the SEs from diluted urine proceeded, selectively, demonstrating the potential of PCO in the treatment of the separate sanitary fraction of domestic sewage.