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Physicochemical Characteristics and Mechanism of Fluoride Removal Using Powdered Zeolite-Zirconium in Modes of Pulsed& Continuous Sonication and Stirring Publisher



Savari A1 ; Hashemi S1 ; Arfaeinia H1, 2 ; Dobaradaran S1, 2 ; Foroutan R3 ; Mahvi AH4, 5 ; Fouladvand M6 ; Sorial GA7 ; Farjadfard S8 ; Ramavandi B1, 2
Authors
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Authors Affiliations
  1. 1. Environmental Health Engineering Department, Faculty of Health and Nutrition, Bushehr University of Medical Sciences, Bushehr, Iran
  2. 2. Systems Environmental Health and Energy Research Center, The Persian Gulf Biomedical Sciences Research Institute, Bushehr University of Medical Sciences, Bushehr, Iran
  3. 3. Faculty of Chemical and Petroleum Engineering, University of Tabriz, Tabriz, 5166616471, Iran
  4. 4. Center for Solid Waste Research (CSWR), Institute for Environmental Research (IER), Tehran University of Medical Sciences, Tehran, Iran
  5. 5. Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
  6. 6. The Persian Gulf Marine Biotechnology Research Center, Bushehr University of Medical Sciences, Bushehr, Iran
  7. 7. Environmental Engineering Program, Department of Chemical and Environmental Engineering, College of Engineering and Applied Science, University of Cincinnati, Cincinnati, 45221-0012, OH, United States
  8. 8. Department of Environmental Engineering, Graduate School of the Environment and Energy, Science and Research Branch, Islamic Azad University, Tehran, Iran

Source: Advanced Powder Technology Published:2020


Abstract

The current work reports the first application of the fluoride removal using zeolite-zirconium powder in three modes of pulsed sonication, continuous sonication, and stirring. The properties of powdered zeolite-Zr were specified using surface analysis techniques (surface area: 109.71 m2/g and pore volume: 0.08 cm3/g). For all the studied modes, the highest removal rate was observed at pH 7, contact time of 80 min, and zeolite-Zr dose of 3 g/L. Adsorption-desorption experiments were carried out in 6 steps and the fluoride removal was reached to 80% for the final step. The effect of co-existing anions was also studied and chloride and nitrate did not have much effect on efficiency. The powdered zeolite-Zr demonstrated the high ability to remove fluoride from actual wastewater. The data of the present study were well suited to the model of the Freundlich isotherm and the pseudo-second-order kinetic. The pulsed sonication with a maximum adsorption capacity of 32.98 mg/g has been able to demonstrate better performance in comparison with the continuous sonication and stirring mode. © 2020 The Society of Powder Technology Japan
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