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    Antibiotics in hospital effluents: occurrence, contribution to urban wastewater, removal in a wastewater treatment plant, and environmental risk assessment
    (Springer Heidelberg, 2019) Aydin, Senar; Aydin, Mehmet Emin; Ulvi, Arzu; Kilic, Havva
    The study presented the occurrence of antibiotics in 16 different hospital effluents, the removal of antibiotics in urban wastewater treatment plant (WWTP), and the potential ecotoxicological risks of the effluent discharge on the aquatic ecosystem. The total concentration of antibiotics in hospital effluents was ranged from 21.2 +/- 0.13 to 4886 +/- 3.80ng/L in summer and from 497 +/- 3.66 to 322,735 +/- 4.58ng/L in winter. Azithromycin, clarithromycin, and ciprofloxacin were detected the highest concentrations among the investigated antibiotics. The total antibiotic load to the influent of the WWTP from hospitals was 3.46g/day in summer and 303.2g/day in winter. The total antibiotic contribution of hospitals to the influent of the WWTP was determined as 13% in summer and 28% in winter. The remaining 87% in summer and 72% in winter stems from the households. The total antibiotic removal by conventional physical and biological treatment processes was determined as 79% in summer, whereas it decreased to 36% in winter. When the environmental risk assessment was performed, azithromycin and clarithromycin in the effluent from the treatment plant in winter posed a high risk (RQ>10) for the aquatic organisms (algae and fish) in the receiving environment. According to these results, the removal efficiency of antibiotics at the WWTP is inadequate and plant should be improved to remove antibiotics by advanced treatment processes.
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    DETERMINATION AND ENVIRONMENTAL RISK OF ANTI-INFLAMMATORY DRUGS IN URBAN WASTEWATER
    (Health & Environment Assoc, 2016) Aydin, Senar; Aydin, Mehmet Emin; Kilic, Havva; Tekinay, Arzu
    In this study, anti-inflammatory drugs including diclofenac (DICLO), ibuprofen (IBUP), naproxen (NAPROX), ketoprofen (KETOP), mefenamic acid (MEFEN. ACID) were determined in wastewaters and environmental risk level was evaluated using obtained results. Analytical method for determination of anti-inflammatory in wastewater was optimized. The detection of anti-inflammatory was carried out by HPLC/MS-MS. Wastewater samples were taken from Konya Urban Wastewater Treatment Plant input and output. DICLO, IBUP, NAPROX, KETOP, and MEFEN ACID were determined between 35.8-533,
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    Determination of antibiotics by SPE-LC-MS/MS in wastewater and risk assessment
    (Techno-Press, 2018) Aydin, Senar; Aydin, Mehmet E.; Ulvi, Arzu; Kilic, Havva
    In this study, conditions of solid phase extraction (SPE) for determination of some antibiotics such as trimethoprim, oxytetracycline, erythromycin, clarithromycin, azythromycin, doxycycline, sulfamethazine, ciprofloxacin, chlortetracycline, sulfamethoxazole in wastewaters were optimized. After the optimum volume and pH of the sample were determined, the effect of the concentration of the compounds and matrix were investigated. The highest recovery rates for antibiotic compounds were determined between 82% and 105% in 200 mL sample volume and pH 2.5. Then, antibiotic compounds were investigated in influent and effluent samples taken from Konya Urban Wastewater Treatment Plant. The concentration of the antibiotics was detected range of 0.11-101 ng/L in influent waters and
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    Determination of antibiotics by SPE-LC-MS/MS in wastewater and risk assessment
    (Techno-Press, 2018) Aydin, Senar; Aydin, Mehmet E.; Ulvi, Arzu; Kilic, Havva
    In this study, conditions of solid phase extraction (SPE) for determination of some antibiotics such as trimethoprim, oxytetracycline, erythromycin, clarithromycin, azythromycin, doxycycline, sulfamethazine, ciprofloxacin, chlortetracycline, sulfamethoxazole in wastewaters were optimized. After the optimum volume and pH of the sample were determined, the effect of the concentration of the compounds and matrix were investigated. The highest recovery rates for antibiotic compounds were determined between 82% and 105% in 200 mL sample volume and pH 2.5. Then, antibiotic compounds were investigated in influent and effluent samples taken from Konya Urban Wastewater Treatment Plant. The concentration of the antibiotics was detected range of 0.11-101 ng/L in influent waters and
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    OCCURRENCE AND ENVIRONMENTAL RISK ASSESSMENT OF ?-BLOCKERS IN URBAN WASTEWATER
    (Parlar Scientific Publications (P S P), 2017) Aydin, Senar; Aydin, Mehmet Emin; Tekinay, Arzu; Kilic, Havva
    In this study, the analytical method optimization for analysis of (beta-blockers including metoprolol (MET), propranolol (PRO), atenolol (ATE), sotalol (STL), timolol (TML) in wastewater were carried out. The effect of various parameters such as sample volume, pH, concentration, matrix and pre-treatment procedure was studied in order to find out the optimum conditions for their determination in SPE system. The presence of the compounds in Konya urban wastewater treatment plant influent and effluent samples was investigated and the eco-toxicological risk assessment was carried out. The extraction of the samples was performed with SPE system using Oasis HLB cartridges. The concentrations of the target compounds were determined using a liquid chromatograph equipped with MS-MS detector. STL, ATE, MET, PRO, TML were determined in the range of 43.5-468, 278-465, 28.3-92,