Interelectrode Distance Analysis in the Water Defluoridation by Electrocoagulation Reactor

Jesús Fernando Martínez-Villafañe, Juan Carlos Ortiz-Cuellar, Jesús Salvador Galindo-Valdés, Francisco Cepeda-Rodríguez, Josué Gómez-Casas, Nelly Abigaíl Rodríguez-Rosales, Oziel Gómez-Casas and Carlos Rodrigo Muñiz-Valdez ()
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Jesús Fernando Martínez-Villafañe: Faculty of Engineering, Autonomous University of Coahuila, Blvd. Fundadores km 13 University City, Arteaga 25350, Mexico
Juan Carlos Ortiz-Cuellar: Faculty of Engineering, Autonomous University of Coahuila, Blvd. Fundadores km 13 University City, Arteaga 25350, Mexico
Jesús Salvador Galindo-Valdés: Faculty of Engineering, Autonomous University of Coahuila, Blvd. Fundadores km 13 University City, Arteaga 25350, Mexico
Francisco Cepeda-Rodríguez: Faculty of Engineering, Autonomous University of Coahuila, Blvd. Fundadores km 13 University City, Arteaga 25350, Mexico
Josué Gómez-Casas: Faculty of Engineering, Autonomous University of Coahuila, Blvd. Fundadores km 13 University City, Arteaga 25350, Mexico
Nelly Abigaíl Rodríguez-Rosales: Departamento de Metal Mecánica, Tecnologico Nacional de Mexico/I.T. Saltillo, Saltillo 25280, Mexico
Oziel Gómez-Casas: Faculty of Engineering, Autonomous University of Coahuila, Blvd. Fundadores km 13 University City, Arteaga 25350, Mexico
Carlos Rodrigo Muñiz-Valdez: Faculty of Engineering, Autonomous University of Coahuila, Blvd. Fundadores km 13 University City, Arteaga 25350, Mexico

Sustainability, 2022, vol. 14, issue 19, 1-8

Abstract: In this research, the effect of the interelectrode distance (d) in the electrocoagulation (EC) reactor was studied. The experiments were carried out with varying d in values of 3, 5, and 9 mm during the treatment of water contaminated with fluoride (F − ). The response variables analyzed were the treatment time necessary to reduce the residual concentration of F − to 1.5 mg L −1 , the number of aluminum hydroxides formed, the potential drop in the reactor terminals, and the electric power consumption of the reactor. The software FLUENT version 6.3 was employed to simulate the liquid velocity profiles achieved in the reactor chamber. The results obtained show that the liquid velocity increases in the interelectrode spaces to 0.48, 0.65, and 0.86 m s −1 for interelectrode distances of 9, 5, and 3 mm, respectively, which favors not only the formation of flocs but also the elimination of fluoride. With a shorter interelectrode distance, the EC reactor not only consumes less electrical energy but also fewer electrodes, and the dispersion of generated flocs in the reactor chamber is major, which is more important than the quantity of flocs generated in it.

Keywords: electrocoagulation; interelectrode distance; liquid velocity profiles; defluoridation (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
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