Production and Detailed Characterization of Bean Husk-Based Carbon: Efficient Cadmium (II) Removal from Aqueous Solutions

Efficient cadmium (II) ((Cd(II)) removal from aqueous solutions, is examined. A modified carbon-based material from bean husk by a heat-treatment process followed by an acid activation is produced. The results demonstrate that the synthesized materials exhibit a higher uptake of Cd, when compared wi...

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Bibliographic Details
Published in:Water research (Oxford) 2008-02, Vol.42 (3), p.3473-3473
Main Authors: Chavez-Guerrero, Leonardo, Rangel-Mendez, Rene, Munoz-Sandoval, Emilio, Cullen, David A, Smith, David J, Terrones, Humberto, Terrones, Mauricio
Format: Article
Language:English
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Summary:Efficient cadmium (II) ((Cd(II)) removal from aqueous solutions, is examined. A modified carbon-based material from bean husk by a heat-treatment process followed by an acid activation is produced. The results demonstrate that the synthesized materials exhibit a higher uptake of Cd, when compared with those commercial carbons. The maximum uptake of Cd(II) is 11, 60 and 180 mg/g for commercial, original and activated carbon (AC), respectively. Results of IR, energy dispersive X-ray spectroscopy (EDX) and scanning transmission electron microscope (STEM) suggest that surface reactivity of the AC is greater than original carbon (OC) and commercial due to a higher concentration of oxygen. High-resolution transmission electron microscopy (HRTEM) reveals that the lack of order in the carbon structure plays an important role in sorption.
ISSN:0043-1354