A new synthesis route for bone chars using CO2 atmosphere and their application as fluoride adsorbents

Please use this identifier to cite or link to this item: http://hdl.handle.net/10045/57841
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Title: A new synthesis route for bone chars using CO2 atmosphere and their application as fluoride adsorbents
Authors: Rojas-Mayorga, Cintia Karina | Silvestre-Albero, Joaquín | Aguayo-Villarreal, Ismael A. | Mendoza-Castillo, Didilia I. | Bonilla-Petriciolet, Adrian
Research Group/s: Materiales Avanzados
Center, Department or Service: Universidad de Alicante. Departamento de Química Inorgánica | Universidad de Alicante. Instituto Universitario de Materiales
Keywords: CO2 | Bone char | Carbonization | Fluoride adsorption
Knowledge Area: Química Inorgánica
Issue Date: Jun-2015
Publisher: Elsevier
Citation: Microporous and Mesoporous Materials. 2015, 209: 38-44. doi:10.1016/j.micromeso.2014.09.002
Abstract: This study describes a new synthesis route for bone chars using a CO2 atmosphere and their behavior as adsorbent for fluoride removal from water. Specifically, we have performed a detailed analysis of the adsorption properties of bone char samples obtained at different carbonization conditions and a comparative study with samples of bone char obtained via pyrolysis under nitrogen. Experimental results show that the nature of the gas atmosphere (CO2 versus N2) and the carbonization temperature play a major role to achieve an effective bone char for water defluoridation. In particular, the best adsorption properties of bone char for fluoride removal are obtained with those samples synthesized at 700 °C. Carbonization temperatures above 700 °C under CO2 atmosphere cause the dehydroxylation of the hydroxyapatite in the bone char, thus reducing its fluoride adsorption capacity. The maximum fluoride adsorption capacity for the bone char obtained in this study under CO2 atmosphere (i.e., 5.92 mg/g) is higher than those reported for commercial bone chars.
Sponsor: Authors acknowledge the financial support provided by CONACYT, DGEST, Instituto Tecnológico de Aguascalientes and Universidad de Alicante.
URI: http://hdl.handle.net/10045/57841
ISSN: 1387-1811 (Print) | 1873-3093 (Online)
DOI: 10.1016/j.micromeso.2014.09.002
Language: eng
Type: info:eu-repo/semantics/article
Rights: © 2014 Elsevier Inc.
Peer Review: si
Publisher version: http://dx.doi.org/10.1016/j.micromeso.2014.09.002
Appears in Collections:INV - LMA - Artículos de Revistas

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