ADSORPTION OF CHROMIUM FROM STEEL PLATING WASTEWATER USING BLAST FURNACE DUST

Contenido principal del artículo

Francisco Raúl Carrillo Pedroza
María de Jesús Soria Aguilar
Marco Antonio Sánchez Castillo
Antonia Martínez Luévanos
Nallely Guadalupe Picazo Rodríguez

Resumen

In this work, blast furnace dust (BFD) obtained from a steel dust collector is used as low-cost adsorbent material for chromium removal from steel industrial plating wastewater. This study shows that BFD present physical and chemical characteristics, such as chemical composition, magnetic properties and particle size, suitable for application in adsorption of ions such as chromium. Different kinetics approaches and isotherms models were evaluated to describe the adsorption process. According to results, chromium adsorption follows intra-particle diffusion with adsorption in active sites. Freundlich and Dubinin-Radushkevich isotherms parameter and low free energy obtained from isotherms studies indicate that chromium adsorption occurs by of a cooperative physical adsorption process, due to the electrostatic attraction between protonated FeOH<sup>+</sup> and HCrO<sub>4</sub><sup>–</sup>. Although the results indicate that BFD adsorb partially the chromium, it could represent an attractive low-cost absorbent option as complementary method for removal of chromium in the steel plating wastewater treatment.

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Detalles del artículo

Biografía del autor/a

Francisco Raúl Carrillo Pedroza, Facultad de Metalurgia, Universidad Autónoma de Coahuila, Carr. 57 km. 5, 25710, Monclova, Coahuila.

Facultad de Metalurgia, Profesor Investigador

María de Jesús Soria Aguilar, Facultad de Metalurgia, Universidad Autónoma de Coahuila, Carr. 57 km. 5, 25710, Monclova, Coahuila.

Facultad de Metalurgia, Profesor Investigador

Marco Antonio Sánchez Castillo, Facultad de Ciencias Quimicas, Universidad Autónoma de San Luis Potosí, Av. Dr. Manuel Nava 6, Zona Universitaria, 78210 San Luis Potosí, SLP.

Facultad de Ciencias Químicas, Profesor Investigador,

Antonia Martínez Luévanos, Facultad de Ciencias Químicas, Universidad Autónoma de Coahuila, Ing J.Cardenas Valdez, República, 25280, Saltillo, Coahuila

Facultad de Ciencias Químicas, Profesor Investigador

Nallely Guadalupe Picazo Rodríguez, Facultad de Metalurgia, Universidad Autónoma de Coahuila, Carr. 57 km. 5, 25710, Monclova, Coahuila.

Facultad de Metalurgia, Posgraduada de Maestría

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