TY - JOUR TT - Removal of Some Pharmaceutical Residues by US and US/H2O2 Processes AU - Sönmez, Gamze AU - Işık, Mustafa PY - 2017 DA - December Y2 - 2017 DO - 10.17100/nevbiltek.322699 JF - Nevşehir Bilim ve Teknoloji Dergisi PB - Nevşehir Hacı Bektaş Veli Üniversitesi WT - DergiPark SN - 2148-466X SP - 371 EP - 379 VL - 6 KW - Kafein KW - Karbamazepin KW - Parasetamol KW - Ultrases KW - Ultrases-H2O2 N2 - Conventional sewagetreatment plants are not specifically designed for the efficient and completeremoval of pharmaceuticals. Eventually, some pharmaceutical residues maydischarge into the aquatic environment. Advanced oxidation processes are themost commonly used methods for the removal of these residues. The aim of thisstudy was to evaluate the performance of ultrasonic(US) and ultrasonic-H2O2processes on the removal of Carbamazepine(CBZ), Caffeine(CAF) andParacetamol(PAR). The US-H2O2 process was applied atdifferent H2O2 concentrations. The H2O2stock solution was added to the pharmaceutical solutions before being placed inthe ultrasonic sound bath. The US/H2O2 process wasstudied at 1, 3, 5 and 7 mg/L H2O2 concentrations. Thisapplication is aimed to determine the optimal H2O2 concentrationfor US-H2O2 process. All studies were carried out inultrasonic water bath which was operated at fixed 53 kHz frequency and 90 Welectrical power. The process time was set to 60 minutes. The inlet and outletconcentrations for each pharmaceutical were measured by LC-MS/MS instrument. Thefinding of experimental results show that US is not sufficiently effective forthe removal of CBZ, CAF and PAR residues. On the other hand, the US-H2O2process was investigated. Approximately 33%, 25% and 31% removalefficiencies were observed with 7 mg/L H2O2 concentrationfor CBZ, CAF and PAR at the end of 60 minutes, respectively. The increase inconcentration of H2O2 affects positively the removal foreach pharmaceutical residue in US-H2O2 process. 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