Electrochemical regeneration and porosity recovery of phenol-saturated granular activated carbon in an alkaline medium
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Título: | Electrochemical regeneration and porosity recovery of phenol-saturated granular activated carbon in an alkaline medium |
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Autor/es: | Berenguer Betrián, Raúl | Marco Lozar, Juan Pablo | Quijada Tomás, César | Cazorla-Amorós, Diego | Morallon, Emilia |
Grupo/s de investigación o GITE: | Electrocatálisis y Electroquímica de Polímeros | Materiales Carbonosos y Medio Ambiente |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Química Física | Universidad de Alicante. Departamento de Química Inorgánica | Universidad de Alicante. Instituto Universitario de Materiales |
Palabras clave: | Granular activated carbon | Phenol | Electrochemical regeneration | Porosity |
Fecha de publicación: | 3-abr-2010 |
Editor: | Elsevier |
Cita bibliográfica: | Carbon. 2010, 48(10): 2734-2745. https://doi.org/10.1016/j.carbon.2010.03.071 |
Resumen: | The electrochemical regeneration of phenol-saturated activated carbon has been carried out in a filter-press electrochemical cell. The feasibility of the electrochemical regeneration has been assessed by monitoring the regeneration efficiency and the textural properties of a phenol-saturated granular activated carbon (GAC) electrolysed in NaOH medium. The influence of the following factors: (i) the electrolysis treatment (either anodic or cathodic); (ii) the separation of compartments; (iii) applied current and (iv) electrolysis time has been studied. Basing on the obtained results, an overall phenomenological mechanism for the electrochemical regeneration has been proposed. The general worse performance of anodic regenerations can be attributed to an important surface blockage of the GAC by reaction products such as quinones, phenolic oligomers and polymers coming from phenol electrooxidation. The cathodic regeneration in NaOH medium, where phenolate desorption is favoured, and in an undivided configuration, where surface blockage is minimized, produces a significant recovery of the porosity of the original GAC, in agreement with the highest RE values (close to 80%). |
Patrocinador/es: | Financial support by the Ministerio de Ciencia e Innovación (CTQ2006-08958 and MAT2007-60621) projects and GV (ACOMP/2009/174 and PROMETEO/2009/047) is gratefully acknowledged. |
URI: | http://hdl.handle.net/10045/140439 |
ISSN: | 0008-6223 (Print) | 1873-3891 (Online) |
DOI: | 10.1016/j.carbon.2010.03.071 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © 2010 Elsevier Ltd. |
Revisión científica: | si |
Versión del editor: | https://doi.org/10.1016/j.carbon.2010.03.071 |
Aparece en las colecciones: | INV - GEPE - Artículos de Revistas INV - MCMA - Artículos de Revistas |
Archivos en este ítem:
Archivo | Descripción | Tamaño | Formato | |
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Berenguer_etal_2010_Carbon_final.pdf | Versión final (acceso restringido) | 787,13 kB | Adobe PDF | Abrir Solicitar una copia |
Berenguer_etal_2010_Carbon_preprint.pdf | Preprint (acceso abierto) | 1,03 MB | Adobe PDF | Abrir Vista previa |
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