Título:
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Characterization of chromium (III) removal from aqueous solutions by an immature coal (leonardite). Toward a better understanding of the phenomena involved
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Autor/a:
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Lao Luque, Concepción; Solé Sardans, Maria Montserrat; Gamisans Noguera, Javier; Valderrama Angel, César Alberto; Dorado Castaño, Antonio David
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Otros autores:
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Universitat Politècnica de Catalunya. Departament d'Enginyeria Minera, Industrial i TIC; Universitat Politècnica de Catalunya. Departament d'Enginyeria Química; Universitat Politècnica de Catalunya. BIOGAP - Grup de Tractament Biològic de Contaminants Gasosos i Olors; Universitat Politècnica de Catalunya. R2EM - Resource Recovery and Environmental Management |
Abstract:
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This is a post-peer-review, pre-copyedit version of an article published in [insert journal title]. The final authenticated version is available online at: http://dx.doi.org/10.1007/s10098-013-0610-x |
Abstract:
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Removal of chromium (III) from aqueous solutions by leonardite (a low-cost adsorbent) was studied in a series of batch experiments. Stabilization of the adsorbent material with alginate beads was also investigated. The extent of adsorption was evaluated as a function of the solution pH, contact time, and the adsorbate concentration. Cr(III) removal was pH dependent, reaching a maximum at a pH range of 4–5. Kinetic studies allowed gives relevant information regarding mass transfer processes involved during the sorption process. Equilibrium data fitted well to both the Langmuir and Freundlich isotherm models and the maximum adsorption capacity turned out to be 75.2 mg Cr(III) g-1. Encapsulation of leonardite in alginate beads resulted in a slightly lower adsorption capacity. |
Abstract:
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Peer Reviewed |
Materia(s):
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-Àrees temàtiques de la UPC::Enginyeria química -Àrees temàtiques de la UPC::Enginyeria química::Química del medi ambient -Adsorption -Chemical kinetics -Sewage -- Purification -- Chromium removal -Adsorption -Leonardite -Chromium (III) -Kinetics -Isotherm -Adsorció -Cinètica química -Aigües residuals -- Depuració -- Eliminació de crom |
Derechos:
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Tipo de documento:
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Artículo - Versión presentada Artículo |
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