Novel, simple, and environmentally safe method for wastewater pollutant removal

Duque L. ; Gutiérrez L. (Universidad de Zaragoza) ; Menéndez N. ; Herrasti P. ; Mazario E.

Resumen: In this work, a new methodology has been developed for the elimination of cobalt, nickel and a mixture of both metals from synthetic wastewater in a continuous way. This methodology consists of the electrochemical formation of ferrites of these metals through the oxidation of iron sheets and the reduction of water. Two critical process parameters, current densities and initial pollutant concentration, were analysed. An initial batch prototype resulted in efficiencies on the order of 98% under conditions of applied densities of 50 mA/cm2 and concentrations of both metals of until 100 ppm of the ions. The obtained particles have been characterized by X-ray diffraction to determine the formation of ferrites without the appearance of secondary phases. The formed particle sizes are approximately 30 nm, with hemispherical or flower-like shapes. A flow system prototype was designed for the recirculation of the solution with 100 ppm of both contaminating metals, obtaining approximately 90% recovery with an easy magnetic harvesting. © 2021 The Authors

Idioma: Inglés

DOI: 10.1016/j.jwpe.2021.102181

Año: 2021

Publicado en: Journal of Water Process Engineering 42 (2021), 102181 [9 pp]
ISSN: 2214-7144

Factor impacto JCR: 7.34 (2021)

Categ. JCR: ENGINEERING, CHEMICAL rank: 23 / 143 = 0.161 (2021) - Q1 - T1
Categ. JCR: WATER RESOURCES rank: 8 / 102 = 0.078 (2021) - Q1 - T1
Categ. JCR: ENGINEERING, ENVIRONMENTAL rank: 15 / 55 = 0.273 (2021) - Q2 - T1

Factor impacto CITESCORE: 7.2 - Engineering (Q1) - Chemical Engineering (Q1) - Environmental Science (Q1) - Biochemistry, Genetics and Molecular Biology (Q2)

Factor impacto SCIMAGO: 1.027 - Biotechnology (Q1) - Water Science and Technology (Q1) - Waste Management and Disposal (Q1) - Process Chemistry and Technology (Q1)

Financiación: info:eu-repo/grantAgreement/ES/MICINN/PGC2018-096016-B-I00
Financiación: info:eu-repo/grantAgreement/ES/MINECO-FSE/PGC2018-095642-B-I00

Tipo y forma: Article (Published version)

Área (Departamento): Área Química Analítica (Dpto. Química Analítica)