Catalytic Oxidation of Pahs in Wastewater / Katalityczne Utlenianie Wwa w Ściekach
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Czestochowa University of Technology, Department of Chemistry Water and Wastewater Technology, Dąbrowskiego st 69, 42-200 Częstochowa, Poland
Online publication date: 2016-04-29
Publication date: 2016-03-01
Civil and Environmental Engineering Reports 2016;20(1):179-191
The aim of the investigations was to determine the effectiveness of the removal of 4, 5 - ring PAHs from coking wastewater using dihydrogen dioxide in the presence of a cobalt, platinum or titanium catalyst. A dose 7.4 mL of dihydrogen dioxide in the amount of and 14.8 mL/L of the analyzed sample were added to the samples. The samples were shaken and stored under laboratory conditions for 12 hours. The concentration of PAHs before and after the oxidation process were determined. The quantitative and qualitative chromatographic analysis was carried out using a gas chromatograph coupled with a mass spectrometer (GC-MS). The total concentration of 8 PAHs before oxidation reached the value of 9150 ng/L The concentration of 4-ring compounds and 5-ring PAHs were equal to 6390 ng/L and 2760 ng/L, respectively. The highest decrease (93%) the sum of 8 hydrocarbons using a dose of oxidizer 7.4 ml/L and in the presence of titanium catalyst was achieved.
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