Identificador persistente para citar o vincular este elemento:
http://hdl.handle.net/10662/21997
Títulos: | Study of the adsorption and electroadsorption process of Cu (II) ions within thermally and chemically modified activated carbon |
Autores/as: | Macías García, Antonio Gómez Corzo, Manuel Alfaro Domínguez, Manuel Alexandre Franco, María Francisca Martínez Naharro, J. |
Palabras clave: | Carbón activado;Adsorción;Electroadsorción;Modelos cinéticos;Iones cobre;Activated carbon;Adsorption;Electroadsorption;Kinetics models;Copper ions |
Fecha de publicación: | 2017 |
Editor/a: | Elsevier |
Resumen: | The aim of this work is to modify the porous texture and superficial groups of a commercial activatedcarbon through chemical and thermal treatment and subsequently study the kinetics of adsorption andelectroadsorption of Cu (II) ion for these carbons.Samples of three activated carbons were used. These were a commercial activated carbon, commercialactivated carbon modified thermically (C-N2-900) and finally commercial activated carbon modifiedchemically C-SO2-H2S-200. The activated carbons were characterized chemically and texturally and theelectrical conductivity of them determined. Different kinetic models were applied. The kinetics of theadsorption and electroadsorption process of the Cu (II) ion fits a pseudo second order model and themost likely mechanism takes place in two stages. A first step through transfer of the metal mass throughthe boundary layer of the adsorbent and distribution of the Cu (II) on the external surface of the activatedcarbon and a second step that represents intraparticle diffusion and joining of the Cu (II) with the activecentres of the activated carbon. Finally, the kinetics of the adsorption process are faster than the kinetics ofthe electroadsorption but the percentage of the Cu (II) ion retained is much higher in the electroadsorptionprocess. |
Descripción: | Publicado en: Journal of Hazardous Materials, Volume 328, 15 April 2017, Pages 46-55 con DOI https://doi.org/10.1016/j.jhazmat.2016.11.036 |
URI: | http://hdl.handle.net/10662/21997 |
ISSN: | 0304-3894 |
DOI: | 10.1016/j.jhazmat.2016.11.036 |
Colección: | DIMEM - Artículos DQOIN - Artículos |
Archivos
Archivo | Descripción | Tamaño | Formato | |
---|---|---|---|---|
j_jhazmat_2016_11_036_AAM.pdf | 790,46 kB | Adobe PDF | Descargar |
Este elemento está sujeto a una licencia Licencia Creative Commons