Abstracts Book - IMRC 2018

• SF5-P037
MAGNETIC BIOCOMPOSITE ADSORBENT: SYNTHESIS,
CHARACTERIZATION AND APPLICATION IN THE REMOVAL OF
PESTICIDES
Helen Paola Toledo Jaldin 1 , Alien Blanco Flores 2 , Gustavo López Téllez 3 , Víctor Sánchez
Mendieta 3 , Alfredo R. Vilchis Nestor 3
1 Universidad Autónoma del Estado de México, Química, Mexico. 2 Tecnológico de Estudios
Superiores de Tianguistenco, Mecánica, Mexico. 3 Centro Conjunto de Investigación en Química
Sustentable UAEM-UNAM (CCIQS), Materiales, Mexico.
The synthesis of adsorbent materials, has been investigated extensively in
recent years because adsorption is an easy and low cost process of remediation.
Separation of these materials after its use is easier when they have magnetic
response. Magnetic composites have been applied to adsorb contaminants
effluents solving environmental problems (Dong et al., 2009). The use of
agricultural waste for this purpose can result in biocomposites not only
environmental friendly, but also very cheap. Agricultural waste such as
sugarcane bagasse is an abundant material with little economic value that may
create serious environmental problems due to its incorrect disposal (Ali et al.,
2016). While the use of magnetic bagasse as adsorbent material has been
previously reported (Yu et al., 2013), there are no reports of its use as the matrix
of a composite with metal organic frameworks (MOF´s). The synthesis of two
magnetic biocomposites made up of magnetite nanoparticles, sugarcane
bagasse and HKUST-1 MOF was developed. The components of both composites
are the same, but the structure is different. In the first one, nanoparticles of
magnetite were encapsulated in the MOF and deposited on the bagasse. In the
second one, initially magnetite nanoparticles were deposited in the bagasse and
then the formation of the MOF was promoted. Both composites were
characterized by XRD and SEM-EDS. The first technique confirmed not only the
occurrence of magnetite nanoparticles but also the MOF presence. The second
technique showed the morphology of both composites, and the distribution of
the magnetite nanoparticles and the HKUST-1 by a chemical mapping. These
biocomposites were used as adsorbent materials for testing the removal of two
pesticides in batch processes. Mathematical models were applied in order to
study the adsorption behavior and to determine the adsorption capacity of
pesticides by each material.