Indian Journal of Science and Technology
DOI: 10.17485/ijst/2018/v11i26/129403
Year: 2018, Volume: 11, Issue: 26, Pages: 1-5
Original Article
Adriana Herrera-Barros1 , Candelaria Tejada-Tovar2 , Ángel Villabona-Ortíz2 , Ángel Darío González-Delgado1* and Erika Ruíz-Paternina2
1 Nanomaterials and Computer Aided Process Engineering Research Group (NIPAC), University of Cartagena, Chemical Engineering Department, Cartagena, Colombia, Avenida del Consulado Calle, 30 No. 48 – 152, Colombia; [email protected], [email protected]
2 Process Design and Biomass Utilization Research Group (IDAB), University of Cartagena, Chemical Engineering Department, Cartagena, Colombia, Avenida del Consulado Calle 30 No. 48 – 152, Colombia; [email protected], [email protected], [email protected]
*Author for correspondence
Adriana Herrera-Barros,
Nanomaterials and Computer Aided Process Engineering Research Group (NIPAC), University of Cartagena, Chemical Engineering Department, Cartagena, Colombia, Avenida del Consulado Calle, 30 No. 48 – 152, Colombia; [email protected]
Background: Agricultural wastes have attached great attention for developing novel materials with physico-chemical properties favorable for several applications as heavy metal ions uptake from aqueous solution. Objectives: In this work, Lemon Peels (LP) residual biomass was successfully modified into a novel biosorbent using alumina (Al2 O3 ) nanoparticles and applied to remove cadmium ions. Methods/Analysis: Characterizations of LP-Al2 O3 biosorbent by FT-IR and SEM were performed to identify morphology and main functional groups. Batch adsorption experiments were carried out under different pH values (2, 4, 6) and particle sizes (0.355, 0.5, 1 mm). The removal yields were calculated using LP and LP-Al2 O3 in order to compare these results and determine the effect of alumina nanoparticles on adsorption process. Finding: The FT-IR analysis revealed the presence of covalent binding of aluminum with carboxyl and carbonyl groups of this biomass. The porous surface of LP-Al2 O3 biosorbent observed in SEM micrograph suggested a high surface available to metal ions binding. The removal yields were increased from 90.35 to 93.3% after loading alumina nanoparticles into lemon peels biomass due to the larger surface given by nano-scale particle size. Novelty/Improvement: These results suggested that lemon peels-based biosorbents can be efficiently used for cadmium ions uptake from aqueous solution.
Keywords: Adsorption, Cadmium Ions, Lemon Peels, Nanoparticles
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