Physicochemical characteristics and mechanism of fluoride removal using powdered zeolite-zirconium in modes of pulsed& continuous sonication and stirring

Savari, A and Hashemi, S and Arfaeinia, H and Dobaradaran, S and Foroutan, R and Mahvi, A.H and Fouladvand, M and Sorial, G.A and Farjadfard, S and Ramavandi, B (2020) Physicochemical characteristics and mechanism of fluoride removal using powdered zeolite-zirconium in modes of pulsed& continuous sonication and stirring. Advanced Powder Technology, 31 (8). pp. 3521-3532. ISSN 09218831

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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.

Item Type: Article
Uncontrolled Keywords: Continuous sonicationEnergy consumptionFluoride adsorptionPulsed sonicationZeolite-zirconium
Subjects: R Medicine > Environmental Health
Divisions: Faculty of Engineering, Science and Mathematics > School of Civil Engineering and the Environment
Depositing User: خدیجه شبانکاره
Date Deposited: 21 Dec 2020 10:02
Last Modified: 21 Dec 2020 10:02
URI: http://eprints.bpums.ac.ir/id/eprint/9026

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