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International Journal of Photoenergy
Volume 2016, Article ID 9462098, 9 pages
Research Article

Photodegradation of 2,4-Dichlorophenol in Aqueous Systems under Simulated and Natural Sunlight

1Faculty of Civil Engineering, Architecture and Environmental Engineering, Lodz University of Technology, Aleja Politechniki 6, 90-924 Lodz, Poland
2Faculty of Process and Environmental Engineering, Lodz University of Technology, Ulica Wólczańska 213, 90-924 Lodz, Poland

Received 26 February 2016; Revised 23 April 2016; Accepted 4 May 2016

Academic Editor: Irene Michael

Copyright © 2016 Dorota Gryglik 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 work presents results of studies on 2,4-dichlorophenol (2,4-DCP) degradation in aqueous solutions using photochemically initiated processes by simulated and natural sunlight. A number of possible substrate photodegradation routes were investigated, by both direct photolysis and photosensitized oxidation process. The major role of singlet oxygen in 2,4-DCP photodegradation was proved. Rose Bengal and derivatives of porphine and phthalocyanine were used as sensitizers. The influences of various process parameters on the reaction rate were investigated. On the basis of experimental data reaction rate constants of 2,4-DCP photosensitized oxidation were determined. The possibility of using natural sunlight to degrade 2,4-DCP in water in the middle latitudes was stated. The acute toxicity bioassay was conducted with the marine bacterium Vibrio fischeri as a bioluminescent indicator. The obtained results encourage further research on this process.