Development of Sustainable Magnetic Biosorbent Using Aqueous Leaf Extract of Vallesia glabra for Methylene Blue Removal from Wastewater

Vallesia glabra (Vg) is a species that has been used in traditional medicine due to its secondary metabolites (alkaloids, saponins, flavonoids, phenols, and cardiac glucosides) for the treatment of measles, rheumatism, muscle aches, and eye inflammation. The biosynthesis of magnetite nanoparticles (...

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Bibliographic Details
Published in:Sustainability 2023-03, Vol.15 (5), p.4586
Main Authors: Medina-Zazueta, Luis, Miranda-Castro, F. C., Romo-Garcia, F., Martínez-Gil, M., Esparza-Ponce, H. E., Encinas-Basurto, D., Ibarra, Jaime
Format: Article
Language:English
Subjects:
Adsorbents
Adsorption
Aqueous solutions
Biosynthesis
Cationic dyes
Chemisorption
Cooling
Dyes
Flavonoids
Fourier transforms
Glucosides
Heavy metal content
Infrared spectroscopy
Iron oxides
Isotherms
Leaves
Magnetite
Membrane separation
Metabolites
Methods
Methylene blue
Micrography
Muscles
Nanoparticles
Nitrates
Organic chemicals
Phenols
Photoelectron spectroscopy
Photoelectrons
Photomicrographs
Phytochemicals
Plant extracts
Saponins
Scanning electron microscopy
Secondary metabolites
Spectrum analysis
Sustainable development
Vallesia glabra
Wastewater
Wastewater treatment
X ray photoelectron spectroscopy
X-ray diffraction
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Summary:Vallesia glabra (Vg) is a species that has been used in traditional medicine due to its secondary metabolites (alkaloids, saponins, flavonoids, phenols, and cardiac glucosides) for the treatment of measles, rheumatism, muscle aches, and eye inflammation. The biosynthesis of magnetite nanoparticles (Fe3O4 NPs) was carried out using an aqueous leaf extract of Vg and was characterized using Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). Afterward, the magnetic adsorbent was tested for its potential to remove cationic dye from aqueous solutions at different pH and adsorbent mass and its reusability after several adsorption/desorption cycles. The XRD pattern and SEM micrographs resulted in an average size of NPs of 12.2 nm. Regarding the removal of MB from an aqueous solution, the kinetic and isotherm adsorption behavior is governed by the pseudo-second-order model and a Langmuir isotherm which describes an ionic exchange and chemisorption process between the positive partial charges of MB and Vg compounds stabilizing Fe3O4 NPs following a thermodynamically favorable process. Therefore, the green synthesis of NPs from Vg leaf extract is considered a sustainable alternative to removing dyes from aqueous solutions.
ISSN:2071-1050
2071-1050
DOI:10.3390/su15054586