E3S Web Conf.
Volume 30, 2018The First Conference of the International Water Association IWA for Young Scientist in Poland “Water, Wastewater and Energy in Smart Cities”
|Number of page(s)||8|
|Published online||06 February 2018|
Photo-oxidation of PAHs with calcium peroxide as a source of the hydroxyl radicals
Czestochowa University of Technology, Department of Chemistry Water and Wastewater Technology, Dąbrowskiego st 69, 42-200 Czestochowa, Poland
2 Czestochowa University of Technology, Department of Chemistry Water and Wastewater Technology, Dąbrowskiego st 69, 42-200 Czestochowa, Poland
The efficiency of the removal of selected PAHs from the pretreated coking wastewater with usage of CaO2, Fenton reagent (FeSO4) and UV rays are presented in this article. The investigations were carried out using coking wastewater originating from biological, industrial wastewater treatment plant. At the beginning of the experiment, the calcium peroxide (CaO2) powder as a source of hydroxyl radicals (OH•) and Fenton reagent were added to the samples of wastewater. Then, the samples were exposed to UV rays for 360 s. The process was carried out at pH 3.5-3.8. After photo-oxidation process a decrease in the PAHs concentration was observed. The removal efficiency of selected hydrocarbons was in the ranged of 89-98%. The effectiveness of PAHs degradation was directly proportional to the calcium peroxide dose.
© The Authors, published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (http://creativecommons.org/licenses/by/4.0/).
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