English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/124693
COMPARTIR / IMPACTO:
Estadísticas
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
Título

Adsorption performance indicators for the CO2/CH4 separation: Application to biomass-based activated carbons

AutorÁlvarez Gutiérrez, Noelia ; Gil Matellanes, María Victoria ; Rubiera González, Fernando ; Pevida García, Covadonga
Palabras claveAdsorption
CO2/CH4 separation
Adsorption performance indicator
Biomass
Fecha de publicación8-nov-2015
EditorElsevier
CitaciónFuel Processing Technology 142: 361-369 (2016)
ResumenA deep understanding of the interaction and competition between different gases on adsorption processes is essential for the design and optimization of industrial units. Two biomass-derived activated carbons (CS-CO2 and CS-H2O), synthesized in our laboratory, were evaluated as selective adsorbents for the separation of CO2 from CO2/CH4 mixtures. Adsorption isotherms of the pure gases (i.e., CO2 and CH4) were performed in a high-pressure magnetic suspension balance at three different temperatures (303, 323 and 343 K) up to 1000 kPa and the data were correlated using the Sips and Toth models. The Ideal Adsorbed Solution Theory (IAST) was applied to predict the binary adsorption equilibrium. The results were validated by means of experimental breakthrough tests in a fixed-bed set-up. The isosteric heats of adsorption were estimated from the pure component adsorption data by means of the Clausius–Clapeyron equation and the Sips and Toth equations. All of the equilibrium data were integrated in a performance indicator defined so as to be able to evaluate the adsorbent in terms of selectivity, working capacity and adsorption enthalpy under conditions relevant to the specific application. Although both CS activated carbons had similar textural features, CS-CO2 showed a better overall performance than CS-H2O for the separation of CO2 from CO2/CH4 mixtures. Our results highlight the importance of carrying out a deep analysis of the adsorption equilibrium under conditions relevant to the foreseen application in order to identify the most suitable adsorbent.
Versión del editorhttp://dx.doi.org/10.1016/j.fuproc.2015.10.038
URIhttp://hdl.handle.net/10261/124693
DOI10.1016/j.fuproc.2015.10.038
ISSN0378-3820
Aparece en las colecciones: (INCAR) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
Adsorption_performance_Alvarez.pdf1,05 MBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo
 

Artículos relacionados:


NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.