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Removal efficiency of As(III) from aqueous solutions using natural and Fe(III) modified bentonites

Baigorria, Estefanía ; Cano, Leonardo ; Sapag, Karim ; Alvarez, Vera

Environmental technology, 2022-10, Vol.43 (24), p.3728-3741 [Periódico revisado por pares]

Abingdon: Taylor & Francis

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Título:
Removal efficiency of As(III) from aqueous solutions using natural and Fe(III) modified bentonites
Autor: Baigorria, Estefanía ; Cano, Leonardo ; Sapag, Karim ; Alvarez, Vera
Assuntos: Adsorbents ; Adsorption ; Aqueous solutions ; Arsenic ; Arsenic removal ; Bentonite ; Colorimetry ; Contamination ; Fluorescence ; Global health ; Infrared analysis ; Infrared spectroscopy ; Iron ; Molybdenum ; Photoelectron spectroscopy ; Photoelectrons ; Physicochemical properties ; Pollutant removal ; Public health ; remediation ; Spectrum analysis ; Thermogravimetric analysis ; water ; Water pollution ; Water purification ; X ray photoelectron spectroscopy ; X-ray diffraction ; X-ray fluorescence
É parte de: Environmental technology, 2022-10, Vol.43 (24), p.3728-3741
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
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Descrição: Contamination of water with arsenic is a major global health problem. The use of adsorbent materials for the removal of As from aqueous systems is a plausible solution to this problem. In this work, the use of commercial bentonites (purified and modified with iron (III)) for the removal of As from water was studied. The samples were characterized by X-ray fluorescence (XRF), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Fourier Transformed Infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), and nitrogen adsorption/desorption isotherms to determine their physicochemical properties. The arsenic removal capacities of adsorbent materials were studied from 1 mg/L solutions of As (III) using the colorimetric technique of molybdenum blue. High adsorption capacity (0.33 mg/g) of As (III) was obtained in aqueous systems after 1 h of treatment with unmodified bentonite. The incorporation of iron improved the removal performance in short times. The obtained results could be the starting point for the development of a low-cost filtration system that contributes to solve the problem of arsenic in water.
Editor: Abingdon: Taylor & Francis
Idioma: Inglês;Francês

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Removal efficiency of As(III) from aqueous solutions using natural and Fe(III) modified bentonites

Baigorria, Estefanía ; Cano, Leonardo ; Sapag, Karim ; Alvarez, Vera

Abingdon: Taylor & Francis

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