Water Vapor Adsorption on Biomass Based Carbons under Post-Combustion CO2 Capture Conditions: Effect of Post-Treatment
The effect of post-treatment upon the H2O adsorption performance of biomass-based carbons was studied under post-combustion CO2 capture conditions. Oxygen surface functionalities were partially replaced through heat treatment, acid washing, and wet impregnation with amines. The surface chemistry of...
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doaj-2e59315d817642e78d2704060b9292732020-11-24T22:55:52ZengMDPI AGMaterials1996-19442016-05-019535910.3390/ma9050359ma9050359Water Vapor Adsorption on Biomass Based Carbons under Post-Combustion CO2 Capture Conditions: Effect of Post-TreatmentNausika Querejeta0Marta G. Plaza1Fernando Rubiera2Covadonga Pevida3Instituto Nacional del Carbón, Instituto Nacional del Carbón-CSIC, Apartado 73, Oviedo 33080, SpainInstituto Nacional del Carbón, Instituto Nacional del Carbón-CSIC, Apartado 73, Oviedo 33080, SpainInstituto Nacional del Carbón, Instituto Nacional del Carbón-CSIC, Apartado 73, Oviedo 33080, SpainInstituto Nacional del Carbón, Instituto Nacional del Carbón-CSIC, Apartado 73, Oviedo 33080, SpainThe effect of post-treatment upon the H2O adsorption performance of biomass-based carbons was studied under post-combustion CO2 capture conditions. Oxygen surface functionalities were partially replaced through heat treatment, acid washing, and wet impregnation with amines. The surface chemistry of the final carbon is strongly affected by the type of post-treatment: acid treatment introduces a greater amount of oxygen whereas it is substantially reduced after thermal treatment. The porous texture of the carbons is also influenced by post-treatment: the wider pore volume is somewhat reduced, while narrow microporosity remains unaltered only after acid treatment. Despite heat treatment leading to a reduction in the number of oxygen surface groups, water vapor adsorption was enhanced in the higher pressure range. On the other hand acid treatment and wet impregnation with amines reduce the total water vapor uptake thus being more suitable for post-combustion CO2 capture applications.http://www.mdpi.com/1996-1944/9/5/359biomass based carbonswater vapor adsorptionCO2 capture |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Nausika Querejeta Marta G. Plaza Fernando Rubiera Covadonga Pevida |
spellingShingle |
Nausika Querejeta Marta G. Plaza Fernando Rubiera Covadonga Pevida Water Vapor Adsorption on Biomass Based Carbons under Post-Combustion CO2 Capture Conditions: Effect of Post-Treatment Materials biomass based carbons water vapor adsorption CO2 capture |
author_facet |
Nausika Querejeta Marta G. Plaza Fernando Rubiera Covadonga Pevida |
author_sort |
Nausika Querejeta |
title |
Water Vapor Adsorption on Biomass Based Carbons under Post-Combustion CO2 Capture Conditions: Effect of Post-Treatment |
title_short |
Water Vapor Adsorption on Biomass Based Carbons under Post-Combustion CO2 Capture Conditions: Effect of Post-Treatment |
title_full |
Water Vapor Adsorption on Biomass Based Carbons under Post-Combustion CO2 Capture Conditions: Effect of Post-Treatment |
title_fullStr |
Water Vapor Adsorption on Biomass Based Carbons under Post-Combustion CO2 Capture Conditions: Effect of Post-Treatment |
title_full_unstemmed |
Water Vapor Adsorption on Biomass Based Carbons under Post-Combustion CO2 Capture Conditions: Effect of Post-Treatment |
title_sort |
water vapor adsorption on biomass based carbons under post-combustion co2 capture conditions: effect of post-treatment |
publisher |
MDPI AG |
series |
Materials |
issn |
1996-1944 |
publishDate |
2016-05-01 |
description |
The effect of post-treatment upon the H2O adsorption performance of biomass-based carbons was studied under post-combustion CO2 capture conditions. Oxygen surface functionalities were partially replaced through heat treatment, acid washing, and wet impregnation with amines. The surface chemistry of the final carbon is strongly affected by the type of post-treatment: acid treatment introduces a greater amount of oxygen whereas it is substantially reduced after thermal treatment. The porous texture of the carbons is also influenced by post-treatment: the wider pore volume is somewhat reduced, while narrow microporosity remains unaltered only after acid treatment. Despite heat treatment leading to a reduction in the number of oxygen surface groups, water vapor adsorption was enhanced in the higher pressure range. On the other hand acid treatment and wet impregnation with amines reduce the total water vapor uptake thus being more suitable for post-combustion CO2 capture applications. |
topic |
biomass based carbons water vapor adsorption CO2 capture |
url |
http://www.mdpi.com/1996-1944/9/5/359 |
work_keys_str_mv |
AT nausikaquerejeta watervaporadsorptiononbiomassbasedcarbonsunderpostcombustionco2captureconditionseffectofposttreatment AT martagplaza watervaporadsorptiononbiomassbasedcarbonsunderpostcombustionco2captureconditionseffectofposttreatment AT fernandorubiera watervaporadsorptiononbiomassbasedcarbonsunderpostcombustionco2captureconditionseffectofposttreatment AT covadongapevida watervaporadsorptiononbiomassbasedcarbonsunderpostcombustionco2captureconditionseffectofposttreatment |
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1725656085650472960 |