Szukana fraza: [Abstract = "The aim of this study was evaluation of the feasibility of using byproducts from alcohol production \(fusel oils\) as an alternative carbon source for denitrification. For comparison, the settled wastewater \(without further pretreatment and after coagulation\-floculation\) as well as two conventional external carbon sources \(ethanol and acetic acid\) were also investigated."]