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Title

Preparation and evaluation of a coconut shell-based activated carbon for CO2/CH4 separation

AuthorsAbdeljaoued, Amna; Querejeta, Nausika; Durán Vera, Inés CSIC ; Álvarez Gutiérrez, Noelia CSIC; Pevida García, Covadonga CSIC ORCID ; Chahbani, Mohamed Hachemi
KeywordsBiogas purification
Coconut shells
Biomass valorization
Textural characterization
Adsorption isotherms
Breakthrough curves
Issue Date3-Jul-2018
PublisherMultidisciplinary Digital Publishing Institute
CitationEnergies 11(7): 1748 (2018)
AbstractBiomass is a widely distributed and renewable source of carbon. The main objective of this work is to produce an activated carbon from coconut shells with suitable characteristics to separate CO2 from biogas. The textural characterization of the adsorbent has been determined. Pure component adsorption isotherms of CO2 and CH4 at 30, 50 and 70 °C have been measured. The results reveal that the activated carbon had high CO2 adsorption capacity. Equilibrium of adsorption of CO2 and CH4 adsorption on the produced activated carbon reached 8.36 mmol/g and 4.63 mmol/g, respectively, at 30 °C and 10 bars. Moreover, the performance of the produced activated carbon, as a potential adsorbent for CO2 capture from a CO2/CH4 gas mixture, has been evaluated under dynamic conditions in a dedicated fixed-bed setup. The CO2 and CH4 adsorption capacities of the produced activated carbon are estimated to be 1.86 and 0.52 mol/kg, respectively, at 30 °C and 1 bar.
Publisher version (URL)https://doi.org/10.3390/en11071748
URIhttp://hdl.handle.net/10261/167937
DOI10.3390/en11071748
E-ISSN1996-1073
Appears in Collections:(INCAR) Artículos




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