Abstracts Book - IMRC 2018

• SF5-P078
SYNTHESIS OF IRON NANOPARTICLES ONTO MICROFIBRILLATED
CELLULOSE SUPPORTS FOR ADSORPTION OF FLUORIDE FROM
AQUEOUS SOLUTIONS
Adriana Vazquez Guerrero 1 , Rafael Huirache Acuña 2 , Raúl Cortés Martínez 3 , Ruth Alfaro Cuevas
Villanueva 4
1 Universidad Michoacana de San Nicolás de Hidalgo, Posgrado Ingenieria Quimica, Mexico.
2 Universidad Michoacana de San Nicolás de Hidalgo, Facultad de Ingenieria Quimica, Mexico.
3 Universidad Michoacana de San Nicolás de Hidalgo, Facultad de Químico Farmacobiología,
Mexico. 4 Universidad Michoacana de San Nicolás de Hidalgo, Instituto de Investigaciones en
Ciencias de la Tierra, Mexico.
The presence of certain anionic species or trace elements can be considered as
water pollutants when they exceed certain levels. Fluoride is a persistent and
non-degradable poison that accumulates in soil, plants, wildlife and humans and
that can be enriched in natural waters by geological processes. On the other
hand, recent studies have demonstrated the presence of fluorides in
groundwaters of the northern, central and western parts of Mexico. Those
places show a fluoride concentration ranging 0.2 to 17 mg/L, above the
maximum permissible level set by the WHO of 1.5 mg/L. Adsorption is one
method for water defluoridation, and the use of iron nanoparticles onto
microfibrillated cellulose supports is of great importance in the development of
new technologies for the treatment of water in some communities.
In the present work, microfibrillated cellulose (NCRI) was extracted by Kraft
Pulping of wood Moringa Oleífera Lam. and also by an acid hydrolysis method.
The separation of microfibers was carried out using high-intensity
ultrasonication technique combined with cryocrushing. This work also describes
an approach to the synthesis of iron nanoparticles supported in microfibrillated
cellulose using tea leaf extract of Moringa Oleífera Lam (NCRI-M). The effects of
different pH 3 and 7, during the nanoparticle synthesis process were examined.
The characterization of NCRI and NCRI-M was carried out by X-ray powder
diffraction (XRD), scanning electron microscopy (SEM), Fourier transform
infrared spectroscopy (FTIR), Point of zero charge (PZC) and thermo-gravimetric
analysis (TGA).
In this study, batch-type experiments were performed to determine the fluoride
removal kinetic and equilibrium parameters of system. For these experiments,