Removel of antibiotic from wastewater by advanced treatment methods

In the first part of the study, antibiotic treatment using electrooxidation method with the pH (2,3,4), current density (2, 3, 4mA/cm2) and initial antibiotic concentration of (100, 200,300 mg/L) have been investigated. As the anode, boron-doped diamond (BDD) anode and as cathode iron electrode is used. İt has been observed that at acidic pH the removal efficiency increased. And the removal efficiency increases by increasing the current density. The highest removal efficiencies were obtained at an initialconcentration of 100 mg/L, pH 4 and a current density of 4 mA/cm2. The concentration ofamoxicillin, chloramphenicol and tetracycline reduced to 0.61, 18.25 and 55.29 mg/L with removal efficiency of 99,39%, 88,98%, 97,78% and energy consumption of 7.89, 6.77 and 6.37 kWh/m3 respectively. Electrooxidationprocess is likely to followthe first order reaction.In the second part of the study, antibiotic treatment was carried out by adsorption method.12 different activated carbons were produced at different temperatures(450, 550, 650, 750oC) and saturation ratios (0,5/1, 1/1, 2/1) by Carbonization of cranberry kernel as an adsorbent.Chemical activation of the biomass is carried out with zinc chloride.Characterization of activated carbons was performed by FTIR, BET,and SEM analyze.The pH, the amount of activated carbon and the temperature parameters were determined for removal by adsorption method of three different antibiotics.0.15 gr produced at 5500C and 2/1 saturation rate.as a result of adsorption experiments with active carbon at 200oC, removal of amoxicillin, chloramphenicol,and tetracycline was 99, 99, 99, 93 and 99.97%respectively. It has also been found that the adsorption system conforms to the Langmuir isotherm model. Keywords: Antibiotic removal, Electrooxidation, Adsorption, Active carbon, BDD anode