مطالعه آزمايشگاهي تخريب آلاينده دارويي تتراسايكلين از محلول در يك راكتور كاويتاسيون هيدروديناميكي همراه با فرايند UV/H2O2

adays, studies an‎d researches on hydrodynamic cavitation reactors have iNowncreased due to its unique features in the removal of various pollutants. Meanwhile, the rotating flow hydrodynamic cavitation reactor of the vortex diode type was chosen for the destruction of the pharmaceutical pollutant tetracycline due to its features such as lower operating pressure an‎d less corrosion, an‎d it was designed an‎d built in order to conduct tests of a laboratory-scale system. Next, this reactor is combined with the UV/H2O process to eva‎luate the efficiency of this process by combining it with other advanced oxidation methods. After design of experiment with the Box-Benken method in the Design expert software an‎d performing experiments an‎d checking the parameters for selec‎ting the initial concentration of the pollutant (20, 10 an‎d 30 mg/l), pressure (2, 1 an‎d 3) an‎d reactor size (6 an‎d 12 mm) ) The best performance of the removal efficiency was related to the operating conditions with the initial pollutant concentration of 10 mg/liter, pressure of 2 bar, pH = 5 an‎d smaller reactor size with an inlet of 6 mm, where the removal rate of 24.2% of tetracycline pollutant was measured. In the meantime, pH has had the greatest impact on pollutant removal. To determine the effectiveness of the hydrodynamic cavitation process in combination with the UV/H2O2 process, another experiment was designed with the custom (optimal) method using Design expert software. Operating parameters an‎d investigated levels of initial pollutant concentration (20, 10 an‎d 30 mg/L), pressure (2, 1 an‎d 3 bar) an‎d injection concentration of hydrogen peroxide (1, 0 an‎d 2 mmol/L) an‎d UV lamp in two state (on an‎d off) an‎d the best performance in removing the tetracycline pollutant in the operational conditions of the initial pollutant concentration of 20 mg/liter, pressure of 1 bar, pH=5, hydrogen peroxide injection concentration of 2 mmol/liter an‎d with the UV lamp turned on Registration has been received. The results indicate that the HC/UV/H2O2 method will perform well in removing tetracycline pollutants

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