Preparation and Evaluation of a Coconut Shell-Based Activated Carbon for CO 2 /CH 4 Separation

Amna Abdeljaoued, Nausika Querejeta, Inés Durán, Noelia Álvarez-Gutiérrez, Covadonga Pevida and Mohamed Hachemi Chahbani
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Amna Abdeljaoued: LR11ES54-Laboratory of “Chemical Processes and Industrials Systems”, University of Gabes, Gabès 6029, Tunisia
Nausika Querejeta: Instituto Nacional del Carbón, INCAR-CSIC, c/Francisco Pintado Fe 26, 33011 Oviedo, Spain
Inés Durán: Instituto Nacional del Carbón, INCAR-CSIC, c/Francisco Pintado Fe 26, 33011 Oviedo, Spain
Noelia Álvarez-Gutiérrez: Instituto Nacional del Carbón, INCAR-CSIC, c/Francisco Pintado Fe 26, 33011 Oviedo, Spain
Covadonga Pevida: Instituto Nacional del Carbón, INCAR-CSIC, c/Francisco Pintado Fe 26, 33011 Oviedo, Spain
Mohamed Hachemi Chahbani: LR11ES54-Laboratory of “Chemical Processes and Industrials Systems”, University of Gabes, Gabès 6029, Tunisia

Energies, 2018, vol. 11, issue 7, 1-14

Abstract: Biomass 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 CO 2 from biogas. The textural characterization of the adsorbent has been determined. Pure component adsorption isotherms of CO 2 and CH 4 at 30, 50 and 70 °C have been measured. The results reveal that the activated carbon had high CO 2 adsorption capacity. Equilibrium of adsorption of CO 2 and CH 4 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 CO 2 capture from a CO 2 /CH 4 gas mixture, has been evaluated under dynamic conditions in a dedicated fixed-bed setup. The CO 2 and CH 4 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.

Keywords: biogas purification; coconut shells; biomass valorization; textural characterization; adsorption isotherms; breakthrough curves (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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