Removal of As(V) in the presence of Cr(VI) in contaminated water from the Bajio region of Mexico using ferrihydrite-functionalized graphene oxide (GOFH): A case study

D.R. Joya-Cárdenas; J.P. Rodríguez-Caicedo; M.A. Corona-Rivera; N. Saldaña-Robles; C.E. Damián-Ascencio; A. Saldaña-Robles

Emerging Contaminants (Sep 2024)

Removal of As(V) in the presence of Cr(VI) in contaminated water from the Bajio region of Mexico using ferrihydrite-functionalized graphene oxide (GOFH): A case study

D.R. Joya-Cárdenas,
J.P. Rodríguez-Caicedo,
M.A. Corona-Rivera,
N. Saldaña-Robles,
C.E. Damián-Ascencio,
A. Saldaña-Robles

Affiliations

D.R. Joya-Cárdenas: Graduate Program in Biosciences, University of Guanajuato, Irapuato, 36500, Mexico; Facultad de Ingenierías y Tecnologías, Instituto Xerira, Universidad de Santander, Bucaramanga, 680003, Colombia
J.P. Rodríguez-Caicedo: Graduate Program in Biosciences, University of Guanajuato, Irapuato, 36500, Mexico
M.A. Corona-Rivera: Chemical Engineering, Unit Academic Multidisciplinary Region Altiplano UAMRA. Autonomous University of San Luis Potosí, Matehuala, San Luis Potosí, 78000, Mexico
N. Saldaña-Robles: Graduate Program in Biosciences, University of Guanajuato, Irapuato, 36500, Mexico; Department of Agricultural Engineering, University of Guanajuato, Irapuato, 36500, Mexico
C.E. Damián-Ascencio: Department of Mechanical Engineering, University of Guanajuato, Salamanca, 36800, Mexico; Mechanical Engineering Department, Virginia Tech, Blacksburg, VA, 24061, USA; Corresponding author. Department of Mechanical Engineering, University of Guanajuato, Salamanca, 36800, Mexico.
A. Saldaña-Robles: Graduate Program in Biosciences, University of Guanajuato, Irapuato, 36500, Mexico; Department of Agricultural Engineering, University of Guanajuato, Irapuato, 36500, Mexico; Mechanical Engineering Department, Virginia Tech, Blacksburg, VA, 24061, USA; Corresponding author. Department of Agricultural Engineering, University of Guanajuato, Irapuato, 36500, Mexico.

Journal volume & issue: Vol. 10, no. 3
p. 100312

Abstract

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The presence of heavy metals such as arsenic (As) and chromium (Cr) can be considered one of the most toxic heavy metals. This study aims to develop and evaluate a graphene oxide (GO) based material functionalized with ferrihydrite for the removal of As(V) in the presence of Cr(VI). The adsorbent ferrihydrite-functionalized graphene oxide (GOFH) was characterized by SEM, FTIR, XRD, XPS, surface charge, BET and TGA. Individual adsorption capacities for As(V) and Cr(VI) were 160 and 66 mg g−1 respectively at pH 4 and 298 K, fitting the Langmuir model. In binary systems, GOFH adsorbed As(V) with an adsorption capacity of 137 mg g−1 in the presence of 20 mg L−1 Cr(VI) at room temperature. Thermodynamic analysis revealed an exothermic and spontaneous process. Additionally, GOFH effectively removed several coexisting anions from groundwater, including SO42−, CO32− and Cl−. This work evidences the potential of GOFH for competitive adsorption of priority pollutants from complex matrices. The GOFH material represents a technically and economically viable technology for application in groundwater decontamination, as it requires inexpensive precursors and ambient conditions during synthesis and operation.

Published in Emerging Contaminants

ISSN: 2405-6650 (Print)
Publisher: KeAi Communications Co., Ltd.
Country of publisher: China
LCC subjects: Technology: Environmental technology. Sanitary engineering: Environmental pollution
Website: https://www.keaipublishing.com/en/journals/emerging-contaminants/

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