Tailoring the adsorption behavior of bone char for heavy metal removal from aqueous solution

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Title: Tailoring the adsorption behavior of bone char for heavy metal removal from aqueous solution
Authors: Rojas-Mayorga, Cintia Karina | Mendoza-Castillo, Didilia I. | Bonilla-Petriciolet, Adrian | Silvestre-Albero, Joaquín
Research Group/s: Materiales Avanzados
Center, Department or Service: Universidad de Alicante. Departamento de Química Inorgánica | Universidad de Alicante. Instituto Universitario de Materiales
Keywords: Bone char | Heavy metals | Water treatment | X-ray photoelectron spectroscopy
Knowledge Area: Química Inorgánica
Issue Date: 14-Jul-2016
Publisher: SAGE Publications
Citation: Adsorption Science & Technology. 2016, 34(6): 368-387. doi:10.1177/0263617416658891
Abstract: This paper evaluates the pyrolysis conditions applied during the synthesis of bovine bone char and the effect of these parameters in its adsorption properties for heavy metal removal from aqueous solution at batch reactors. The synthesis route has been analyzed in detail and the surface interactions involved in the adsorption process has been studied and discussed using different characterization techniques, given a special emphasis on X-ray photoelectron spectroscopy (XPS) analysis. A proper selection of the pyrolysis conditions improved the metal uptake of bone chars by 143% where the adsorption capacities ranged from 68.3 up to 119.4 mg/g. The removal performance followed the trend Cd2+ > Zn2+ > Ni2+. However, the multicomponent removal of Zn2+, Cd2+, and Ni2+ ions in both binary and ternary mixtures was a strong antagonistic adsorption process. XPS analysis confirmed that the ion exchange between the calcium, from the hydroxyapatite structure of bone char, and the heavy metals in solution played an important role in the adsorption process. These findings are useful to enhance the efficacy of heavy metal removal from aqueous solution using bone char.
URI: http://hdl.handle.net/10045/63269
ISSN: 0263-6174 (Print) | 2048-4038 (Online)
DOI: 10.1177/0263617416658891
Language: eng
Type: info:eu-repo/semantics/article
Rights: © The Author(s) 2016
Peer Review: si
Publisher version: http://dx.doi.org/10.1177/0263617416658891
Appears in Collections:INV - LMA - Artículos de Revistas

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