Author/Authors :
Golmohammadi، Sohrab نويسنده Kurdistan Rural Water & Wastewater CO (Kamyaran),Sanandaj,Iran , , Ahmadpour، Mohammad نويسنده School of Public Health,Department of Environmental Health Engineering,Maragheh University of Medical Science,Maragheh,Iran , , Mohammadi، Aliakbar نويسنده School of Public Health,Department of Environmental Health Engineering,Neyshabur University of Medical Sciences,Neyshabur,Iran , , Alinejad، Azim نويسنده Social Determinants in Health Promotion Research Center,Hormozgan University of Medical Sciences,Bandar Abbas,Iran , , Mirzaei، Nezam نويسنده Environmental Health Research Center,Kurdistan University of Medical Sciences,Sanandaj,Iran , , Ghaderpoori، Mansour نويسنده Students Research Committee,Shahid Beheshti University of Medical Sciences,Tehran,Iran , , Ghaderpoori، Afshin نويسنده Department of Environmental Health Engineering,Shahid Beheshti University of Medical Sciences,Tehran,Iran ,
Abstract :
Background: The purpose of the present study was to assess the efficiency of ultrasound/hydrogen peroxide processes and ultrasound/hydrogen peroxide/ZnO nanoparticles in the removal of blue cat 41 dye from aqueous solutions.
Methods: ZnO nanoparticles were prepared using the hydrothermal method. Variables including pH, concentration of ZnO nanoparticles, initial dye concentration, concentration of hydrogen peroxide, and contact time were investigated.
Results: H2O2 alone is not effective in dye removal. In conditions of H2O2 = 20 mg/L and US = 30 kHz, removal efficiency rates of 6.5%, 23.5%, 30%, 51.8%, and 55%, respectively, were obtained. The maximum removal efficiency rate was obtained at the nanoparticle concentration of 3 g/l. Also, removal efficiency was reduced when the initial dye concentration was increased.
Conclusion: The combination of nanoparticles and US and H2O2 is very effective in removing blue cat 41 dye. As a result, photo catalytic processes can be considered to effectively remove environmental pollutants.
Keywords :
Advanced oxidation process , Ultrasonic waves , ZnO nanoparticles , hydrothermal , Hydrogen peroxide , Dye
