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Article

Cd(II) and Pb(II) Adsorption Using a Composite Obtained from Moringa oleifera Lam. Cellulose Nanofibrils Impregnated with Iron Nanoparticles

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División de Estudios de Posgrado, Facultad Ingeniería Química, Universidad Michoacana de San Nicolás de Hidalgo Edificio M, Ciudad Universitaria, C.P. 58030 Morelia, Mexico
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Facultad de Químico Farmacobiología, Universidad Michoacana de San Nicolás de Hidalgo, Tzintzuntzan 173, Colonia Matamoros, C.P. 58240 Morelia, Mexico
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Instituto de Investigaciones en Ciencias de la Tierra, Universidad Michoacana de San Nicolás de Hidalgo, Edificio U5, Ciudad Universitaria, C.P. 58030 Morelia, Mexico
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Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Campus Juriquilla, C.P. 76230 Querétaro, Mexico
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Authors to whom correspondence should be addressed.
Water 2021, 13(1), 89; https://doi.org/10.3390/w13010089
Received: 26 November 2020 / Revised: 27 December 2020 / Accepted: 28 December 2020 / Published: 3 January 2021
(This article belongs to the Special Issue Adsorbents for Water and Wastewater Treatment and Resource Recovery)
This work informs on the green synthesis of a novel adsorbent and its adsorption capacity. The adsorbent was synthesized by the combination of iron nanoparticles and cellulose nanofibers (FeNPs/NFCs). Cellulose nanofibers (NFCs) were obtained from Moringa (Moringa oleifera Lam.) by a pulping Kraft process, acid hydrolysis, and ultrasonic methods. The adsorption method has advantages such as high heavy metal removal in water treatment. Therefore, cadmium (Cd) and lead (Pb) adsorption with FeNP/NFC from aqueous solutions in batch systems was investigated. The kinetic, isotherm, and thermodynamic parameters, as well as the adsorption capacities of FeNP/NFC in each system at different temperatures, were evaluated. The adsorption kinetic data were fitted to mathematical models, so the pseudo-second-order kinetic model described both Cd and Pb. The kinetic rate constant (K2), was higher for Cd than for Pb, indicating that the metal adsorption was very fast. The adsorption isotherm data were best described by the Langmuir–Freundlich model for Pb multilayer adsorption. The Langmuir model described Cd monolayer sorption. However, experimental maximum adsorption capacities (qe exp) for Cd (>12 mg/g) were lower than those for Pb (>80 mg/g). In conclusion, iron nanoparticles on the FeNP/NFC composite improved Cd and Pb selectivity during adsorption processes, indicating the process’ spontaneous and exothermic nature. View Full-Text
Keywords: cadmium; lead; adsorption; cellulose nanofibrils; iron nanoparticles cadmium; lead; adsorption; cellulose nanofibrils; iron nanoparticles
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MDPI and ACS Style

Vázquez-Guerrero, A.; Cortés-Martínez, R.; Alfaro-Cuevas-Villanueva, R.; Rivera-Muñoz, E.M.; Huirache-Acuña, R. Cd(II) and Pb(II) Adsorption Using a Composite Obtained from Moringa oleifera Lam. Cellulose Nanofibrils Impregnated with Iron Nanoparticles. Water 2021, 13, 89. https://doi.org/10.3390/w13010089

AMA Style

Vázquez-Guerrero A, Cortés-Martínez R, Alfaro-Cuevas-Villanueva R, Rivera-Muñoz EM, Huirache-Acuña R. Cd(II) and Pb(II) Adsorption Using a Composite Obtained from Moringa oleifera Lam. Cellulose Nanofibrils Impregnated with Iron Nanoparticles. Water. 2021; 13(1):89. https://doi.org/10.3390/w13010089

Chicago/Turabian Style

Vázquez-Guerrero, Adriana, Raúl Cortés-Martínez, Ruth Alfaro-Cuevas-Villanueva, Eric M. Rivera-Muñoz, and Rafael Huirache-Acuña. 2021. "Cd(II) and Pb(II) Adsorption Using a Composite Obtained from Moringa oleifera Lam. Cellulose Nanofibrils Impregnated with Iron Nanoparticles" Water 13, no. 1: 89. https://doi.org/10.3390/w13010089

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