Removal of antibiotic Amoxicillin from wastewater and waste sludge by ozonationShadani, Nima (Avtor) Žgajnar Gotvajn, Andreja (Mentor) AmoxicillinAntibioticsBiogasOzonationWastewater treatmentRecently, many researchers have focused on the presence of pharmaceuticals in the environment, especially in waters, as a new class of pollutants. Pharmaceuticals have potentially adverse environmental effects which raise concerns. Therefore, such a pollutant needs to be removed or deactivated before disposal of wastewater into the environment. The purpose of this research was to evaluate the inhibition on biogas production due to the presence of Amoxicillin (AMOX) and the removal of antibiotic Amoxicillin by ozonation. Sample containing 200 mg.L-1 of AMOX inhibited biogas production by 20%. On the other hand, there was no inhibition when concentration of AMOX was more than 400 mg.L-1 and biogas production was even promoted when 800 mg.L-1 of AMOX was in the suspension. In the second part of thesis, we evaluated ozonation as possible treatment for model wastewater that was contaminated by different concentrations of AMOX (from 100 to 800 mg.L-1). Ozonation experiments were performed at ozone flow rates 50, 70, and 100 L.h-1 and total organic carbon (TOC) and chemical oxygen demand (COD) were used to monitor treatment efficiency. The reaction rate based on COD removal accelerated in the first phase (first 15 minutes) by increasing ozone flow rates (k1 = 0.027 to 0.041 min-1 at the flow rates of 50 and 100 L.h-1 respectively). However, there was no significant change in rate constants based on TOC removal while the ozone flow rate increased. The most efficient flow rate of ozone was 70 L.h-1, as 65% of removal efficiency based on COD and 30% of removal efficiency based on TOC were accomplished.20222022-10-14 11:10:00Magistrsko delo/naloga142001sl