Szukana fraza: [Abstract = "The aim of the study was to determine the effect of UV exposure time on the change in concentration of PAHs in industrial wastewater. The study was conducted with the use of coking wastewater collected from the outflow of biological wastewater treatment factory. Ultraviolet irradiation treatment plant was carried out using a variable exposure time\: 30, 60 and 90 seconds. Quantification of PAHs was performed by liquid chromatography."]

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