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Updated: Jul 4, 2026
Preparation of Biomass-based Mesoporous Carbon with Higher Nitrogen-/Oxygen-chelating Adsorption for Cu(II) Through Microwave Pre-Pyrolysis
Published on: February 12, 2019
Production and detailed characterization of bean husk-based carbon: efficient cadmium (II) removal from aqueous
Leonardo Chávez-Guerrero1, René Rangel-Méndez, Emilio Muñoz-Sandoval
1Advanced Materials Department, IPICYT, Camino a la Presa San José 2055, Col. Lomas 4a. sección, San Luis Potosí, México. ichavez@ipicyt.edu.mx
Abstract:
We report the production of a modified carbon by heat treating bean husk (Phaseolus vulgaris) at 270 degrees C in Ar, followed by chemical activation using HNO(3). The material was studied using thermogravimetric analysis (TGA), infrared spectroscopy (IRS), high-resolution transmission electron microscopy (HRTEM), elemental mapping, energy dispersive X-ray spectroscopy (EDX), X-ray powder diffraction and scanning electron microscopy (SEM). Cd(2+) sorption studies with this material were carried out at different concentrations. It was found that cadmium (II) is effectively removed by the modified material obtained from bean husk (180 mg/g). The sorption mechanism is discussed in terms of the activated surface properties. A relationship between the oxygen content and sorption was found in this novel material. Commercial activated carbon (AC) (F400) was used for comparison.
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